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package-lock.json binary
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## Node
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||||||
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# Logs
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logs
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||||||
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# Next.js build output
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.next
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out
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# Nuxt.js build / generate output
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.nuxt
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dist
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# Gatsby files
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.cache/
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# Comment in the public line in if your project uses Gatsby and not Next.js
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# public
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# vuepress build output
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.vuepress/dist
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# Serverless directories
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.serverless/
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# FuseBox cache
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# DynamoDB Local files
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.dynamodb/
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# TernJS port file
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# Stores VSCode versions used for testing VSCode extensions
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.vscode-test
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# yarn v2
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.yarn/cache
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.yarn/unplugged
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.yarn/build-state.yml
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.pnp.*
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const path = require("path");
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module.exports = grunt => {
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grunt.initConfig({
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pkg: grunt.file.readJSON("package.json"),
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clean: {
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default: ["dist/"],
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},
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copy: {
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html: {
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files: [{expand: true, cwd: "src/main/", src: "**/*.html", dest: "dist/"}],
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},
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},
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focus: {
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dev: {
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include: ["html", "js", "link"],
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},
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},
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replace: {
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dev: {
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src: ["./dist/*.html", "./dist/*.js"],
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replacements: [
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{
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from: "%%VERSION_NUMBER%%",
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to: "<%= pkg.version %>+" + new Date().toISOString().slice(0, 19).replace(/[-:T]/g, ""),
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}
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],
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overwrite: true,
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},
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deploy: {
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src: ["./dist/*.html", "./dist/*.js"],
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replacements: [
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{
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from: "%%VERSION_NUMBER%%",
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to: "<%= pkg.version %>",
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},
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],
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overwrite: true,
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},
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},
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watch: {
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html: {
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files: ["src/main/**/*.html"],
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tasks: ["copy:html"],
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},
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js: {
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files: ["src/main/**/*.js"],
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tasks: ["webpack:dev", "replace:dev"],
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},
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link: {
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files: ["node_modules/@fwdekker/*/dist/**"],
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tasks: ["webpack:dev", "replace:dev"],
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},
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},
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webpack: {
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options: {
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entry: "./src/main/js/Main.js",
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module: {
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rules: [
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{
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test: /\.js$/,
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exclude: /node_modules/,
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},
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{
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test: /\.css$/i,
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use: ["style-loader", "css-loader"],
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},
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{
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||||||
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test: /\.(woff(2)?|ttf|eot|svg)(\?v=\d+\.\d+\.\d+)?$/,
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use: [{
|
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loader: "file-loader",
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options: {
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name: "[name].[ext]",
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outputPath: "./",
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},
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}],
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},
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],
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},
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resolve: {
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extensions: [".css", ".js"],
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},
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output: {
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filename: "bundle.js",
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path: path.resolve(__dirname, "dist/"),
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},
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},
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dev: {
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mode: "development",
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devtool: "inline-source-map",
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||||||
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},
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||||||
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deploy: {
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||||||
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mode: "production",
|
||||||
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},
|
||||||
|
},
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||||||
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});
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||||||
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grunt.loadNpmTasks("grunt-contrib-clean");
|
||||||
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grunt.loadNpmTasks("grunt-contrib-copy");
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||||||
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grunt.loadNpmTasks("grunt-contrib-watch");
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||||||
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grunt.loadNpmTasks("grunt-focus");
|
||||||
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grunt.loadNpmTasks("grunt-text-replace");
|
||||||
|
grunt.loadNpmTasks("grunt-webpack");
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||||||
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||||||
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grunt.registerTask("dev", [
|
||||||
|
// Pre
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||||||
|
"clean",
|
||||||
|
// Copy files
|
||||||
|
"copy:html",
|
||||||
|
// Compile JS
|
||||||
|
"webpack:dev",
|
||||||
|
"replace:dev",
|
||||||
|
]);
|
||||||
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grunt.registerTask("dev:server", ["dev", "focus:dev"]);
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||||||
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grunt.registerTask("deploy", [
|
||||||
|
// Pre
|
||||||
|
"clean",
|
||||||
|
// Copy files
|
||||||
|
"copy:html",
|
||||||
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// Compile JS
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||||||
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"webpack:deploy",
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||||||
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"replace:deploy",
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||||||
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]);
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||||||
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grunt.registerTask("default", ["dev"]);
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};
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20
README.md
20
README.md
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# Simplify fractions
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# Simplify fractions
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Simplifies a fraction of integers by dividing both operands by their greatest common divisor.
|
Simplifies a fraction of integers by dividing both operands by their greatest common divisor.
|
||||||
|
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||||||
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## Development
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||||||
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### Requirements
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||||||
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* [npm](https://www.npmjs.com/)
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||||||
|
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||||||
|
### Setting up
|
||||||
|
```shell script
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||||||
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# Install dependencies (only needed once)
|
||||||
|
$> npm ci
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||||||
|
```
|
||||||
|
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||||||
|
### Building
|
||||||
|
```shell script
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||||||
|
# Build the tool in `dist/` for development
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||||||
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$> npm run dev
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||||||
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# Same as above, but automatically rerun it whenever files are changed
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||||||
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$> npm run dev:server
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# Build the tool in `dist/` for deployment
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||||||
|
$> npm run deploy
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||||||
|
```
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||||||
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226
index.html
226
index.html
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||||||
<!DOCTYPE html>
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||||||
<html lang="en">
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||||||
<head>
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||||||
<meta charset="utf-8">
|
|
||||||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
|
||||||
<meta name="author" content="Felix W. Dekker" />
|
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||||||
<meta name="application-name" content="Simplify fractions" />
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||||||
<meta name="description" content="Simplify fractions." />
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||||||
<meta name="theme-color" content="#0033cc" />
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||||||
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||||||
<title>Simplify fractions | FWDekker</title>
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||||||
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||||||
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,300italic,700,700italic"
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||||||
crossorigin="anonymous" />
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||||||
<link rel="stylesheet" href="https://static.fwdekker.com/css/milligram-bundle.min.css" crossorigin="anonymous" />
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||||||
</head>
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||||||
<body>
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||||||
<main class="wrapper">
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||||||
<!-- Header -->
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||||||
<header class="header">
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||||||
<div class="container">
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||||||
<h1>Simplify fractions</h1>
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||||||
<noscript>
|
|
||||||
<span style="color: red; font-weight: bold;">
|
|
||||||
This website does not function if JavaScript is disabled.
|
|
||||||
Please check the <a href="https://www.enable-javascript.com/">
|
|
||||||
instructions on how to enable JavaScript in your web browser</a>.
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||||||
</span>
|
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||||||
</noscript>
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||||||
<blockquote>
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<p><em>Simplify a fraction to eliminate common factors.</em></p>
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</blockquote>
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||||||
</div>
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</header>
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||||||
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||||||
<!-- Input -->
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||||||
<section class="container">
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||||||
<form>
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<fieldset>
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<label for="numerator">Numerator</label>
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<input type="number" id="numerator" min="-2147483647" max="2147483647" autofocus />
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||||||
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<label for="denominator">Denominator</label>
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<input type="number" id="denominator" min="-2147483647" max="2147483647" />
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</fieldset>
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</form>
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</section>
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||||||
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||||||
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||||||
<!-- Output -->
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||||||
<section class="container">
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||||||
<span id="out"></span>
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||||||
</section>
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||||||
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||||||
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||||||
<!-- Footer -->
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||||||
<footer class="footer">
|
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||||||
<section class="container">
|
|
||||||
Made by <a href="https://fwdekker.com/">Felix W. Dekker</a>.
|
|
||||||
Licensed under the
|
|
||||||
<a href="https://git.fwdekker.com/FWDekker/simplify-fractions/src/branch/master/LICENSE">MIT License</a>.
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||||||
Source code available on <a href="https://git.fwdekker.com/FWDekker/simplify-fractions/">git</a>.
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|
||||||
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||||||
<div style="float: right;">v1.1.0</div>
|
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||||||
</section>
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|
||||||
</footer>
|
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||||||
</main>
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||||||
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||||||
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||||||
<!-- Scripts -->
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||||||
<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-MML-AM_CHTML"
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||||||
integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script>
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|
||||||
<script src="https://static.fwdekker.com/js/common.js" crossorigin="anonymous"></script>
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||||||
<script>
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||||||
/**
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||||||
* A fraction that can be simplified.
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||||||
*/
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class Fraction {
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||||||
constructor(numerator, denominator) {
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||||||
if (!isInt(numerator) || !isInt(denominator))
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||||||
throw new Error("Numerator and denominator must be integer-like.");
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||||||
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||||||
this.sign = numerator < 0 !== denominator < 0 ? -1 : 1;
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this.numerator = Math.abs(+numerator);
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this.denominator = Math.abs(+denominator);
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}
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||||||
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/**
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||||||
* Returns a new fraction such that the gcd of the numerator and denominator is 1.
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*
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||||||
* @returns {Fraction} a new fraction such that the gcd of the numerator and denominator is 1
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||||||
*/
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||||||
simplify() {
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||||||
const common = gcd(this.numerator, this.denominator);
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||||||
return new Fraction(this.sign * this.numerator / common, this.denominator / common);
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||||||
}
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||||||
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||||||
/**
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||||||
* Returns the MathJax string representation of this fraction.
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||||||
*
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||||||
* @returns {string} the MathJax string representation of this fraction
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||||||
*/
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||||||
toString() {
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||||||
let frac = `\\frac{${this.numerator}}{${this.denominator}}`;
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||||||
if (this.sign === -1)
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||||||
frac = `-${frac}`;
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||||||
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||||||
return frac;
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||||||
}
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||||||
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||||||
/**
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||||||
* Returns the MathJax string representation of this fraction, or of the numerator if the denominator is 1.
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||||||
*
|
|
||||||
* @returns {string} the MathJax string representation of this fraction, or of the numerator if the denominator
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||||||
* is 1.
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||||||
*/
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||||||
toReducedString() {
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||||||
if (this.numerator === 0)
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|
||||||
return "0";
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||||||
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||||||
let frac;
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|
||||||
if (this.denominator === 1)
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||||||
frac = `${this.numerator}`;
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||||||
else
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|
||||||
frac = `\\frac{${this.numerator}}{${this.denominator}}`;
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||||||
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||||||
if (this.sign === -1)
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||||||
frac = `-${frac}`;
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||||||
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|
||||||
return frac;
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|
||||||
}
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|
||||||
}
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|
||||||
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|
||||||
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|
||||||
// noinspection EqualityComparisonWithCoercionJS
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||||||
/**
|
|
||||||
* Returns `true` if and only if `n` is an integer.
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|
||||||
*
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|
||||||
* @param n {*} the value to check for integerness
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|
||||||
* @returns {boolean} `true` if and only if `n` is an integer
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|
||||||
*/
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||||||
const isInt = n => n == parseInt(n);
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||||||
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|
||||||
/**
|
|
||||||
* Returns the greatest common divisor of `a` and `b`.
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|
||||||
*
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|
||||||
* @param a {number} the first operand
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||||||
* @param b {number} the second operand
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|
||||||
* @returns {number} the greatest common divisor of `a` and `b`
|
|
||||||
*/
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||||||
const gcd = (a, b) => {
|
|
||||||
if (b > a) {
|
|
||||||
const temp = a;
|
|
||||||
a = b;
|
|
||||||
b = temp;
|
|
||||||
}
|
|
||||||
|
|
||||||
while (true) {
|
|
||||||
if (b === 0) return a;
|
|
||||||
a %= b;
|
|
||||||
|
|
||||||
if (a === 0) return b;
|
|
||||||
b %= a;
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
|
|
||||||
doAfterLoad(() => {
|
|
||||||
const numeratorInput = $("#numerator");
|
|
||||||
const denominatorInput = $("#denominator");
|
|
||||||
const outputField = $("#out");
|
|
||||||
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Returns `undefined` if the inputs are valid, or a tuple consisting of the invalid element and an explanation
|
|
||||||
* of its invalidity otherwise.
|
|
||||||
*
|
|
||||||
* @param numerator {string} the numerator value
|
|
||||||
* @param denominator {string} the denominator value
|
|
||||||
* @returns {(HTMLElement|string)[]|undefined} `undefined` if the inputs are valid, or a tuple consisting of the
|
|
||||||
* invalid element and an explanation of its invalidity otherwise
|
|
||||||
*/
|
|
||||||
const validateInputs = (numerator, denominator) => {
|
|
||||||
if (numerator === "")
|
|
||||||
return [numeratorInput, ""];
|
|
||||||
if (denominator === "")
|
|
||||||
return [denominatorInput, ""];
|
|
||||||
if (!isInt(numerator))
|
|
||||||
return [numeratorInput, "Numerator must be an integer."];
|
|
||||||
if (!isInt(denominator))
|
|
||||||
return [denominatorInput, "Denominator must be an integer."];
|
|
||||||
if (+denominator === 0)
|
|
||||||
return [denominatorInput, "Denominator must not be 0."];
|
|
||||||
|
|
||||||
return undefined;
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Reads the inputs and tries to output the simplified fraction.
|
|
||||||
*/
|
|
||||||
const outputSimplifiedFraction = () => {
|
|
||||||
let numerator = numeratorInput.value;
|
|
||||||
let denominator = denominatorInput.value;
|
|
||||||
|
|
||||||
const validationInfo = validateInputs(numerator, denominator);
|
|
||||||
if (validationInfo !== undefined) {
|
|
||||||
outputField.innerText = validationInfo[1];
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
const fraction = new Fraction(numeratorInput.value, denominatorInput.value);
|
|
||||||
outputField.innerText = "$$" + fraction.toString() + " = " + fraction.simplify().toReducedString() + "$$";
|
|
||||||
|
|
||||||
MathJax.Hub.Queue(["Typeset", MathJax.Hub]);
|
|
||||||
};
|
|
||||||
|
|
||||||
|
|
||||||
numeratorInput.addEventListener("input", () => outputSimplifiedFraction());
|
|
||||||
|
|
||||||
denominatorInput.addEventListener("input", () => outputSimplifiedFraction());
|
|
||||||
});
|
|
||||||
</script>
|
|
||||||
</body>
|
|
||||||
</html>
|
|
Binary file not shown.
|
@ -0,0 +1,37 @@
|
||||||
|
{
|
||||||
|
"name": "simplify-fractions",
|
||||||
|
"version": "v1.2.0",
|
||||||
|
"description": "Simple web tool for simplifying fractions",
|
||||||
|
"author": "Felix W. Dekker",
|
||||||
|
"browser": "dist/bundle.js",
|
||||||
|
"repository": {
|
||||||
|
"type": "git",
|
||||||
|
"url": "git@git.fwdekker.com:FWDekker/simplify-fractions.git"
|
||||||
|
},
|
||||||
|
"private": true,
|
||||||
|
"scripts": {
|
||||||
|
"clean": "grunt clean",
|
||||||
|
"dev": "grunt dev",
|
||||||
|
"dev:server": "grunt dev:server",
|
||||||
|
"deploy": "grunt deploy"
|
||||||
|
},
|
||||||
|
"dependencies": {
|
||||||
|
"@fwdekker/template": "^0.0.22",
|
||||||
|
"katex": "^0.13.0"
|
||||||
|
},
|
||||||
|
"devDependencies": {
|
||||||
|
"css-loader": "^5.2.0",
|
||||||
|
"file-loader": "^6.2.0",
|
||||||
|
"grunt": "^1.3.0",
|
||||||
|
"grunt-cli": "^1.4.1",
|
||||||
|
"grunt-contrib-clean": "^2.0.0",
|
||||||
|
"grunt-contrib-copy": "^1.0.0",
|
||||||
|
"grunt-contrib-watch": "^1.1.0",
|
||||||
|
"grunt-focus": "^1.0.0",
|
||||||
|
"grunt-text-replace": "^0.4.0",
|
||||||
|
"grunt-webpack": "^4.0.2",
|
||||||
|
"style-loader": "^2.0.0",
|
||||||
|
"webpack": "^5.28.0",
|
||||||
|
"webpack-cli": "^4.5.0"
|
||||||
|
}
|
||||||
|
}
|
|
@ -0,0 +1,52 @@
|
||||||
|
<!DOCTYPE html>
|
||||||
|
<html lang="en">
|
||||||
|
<head>
|
||||||
|
<meta charset="utf-8">
|
||||||
|
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||||||
|
<meta name="author" content="Felix W. Dekker" />
|
||||||
|
<meta name="application-name" content="Simplify fractions" />
|
||||||
|
<meta name="description" content="Simplify fractions." />
|
||||||
|
<meta name="theme-color" content="#0033cc" />
|
||||||
|
|
||||||
|
<title>Simplify fractions | FWDekker</title>
|
||||||
|
|
||||||
|
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,300italic,700,700italic"
|
||||||
|
crossorigin="anonymous" />
|
||||||
|
</head>
|
||||||
|
<body>
|
||||||
|
<noscript>
|
||||||
|
<span style="color: red; font-weight: bold;">
|
||||||
|
This website does not function if JavaScript is disabled.
|
||||||
|
Please check the <a href="https://www.enable-javascript.com/">
|
||||||
|
instructions on how to enable JavaScript in your web browser</a>.
|
||||||
|
</span>
|
||||||
|
</noscript>
|
||||||
|
<main style="display: none;">
|
||||||
|
<div id="nav"></div>
|
||||||
|
<div id="contents">
|
||||||
|
<div id="header"></div>
|
||||||
|
|
||||||
|
<!-- Input -->
|
||||||
|
<section class="container">
|
||||||
|
<form>
|
||||||
|
<fieldset>
|
||||||
|
<label for="numerator">Numerator</label>
|
||||||
|
<input type="number" id="numerator" min="-2147483647" max="2147483647" autofocus />
|
||||||
|
|
||||||
|
<label for="denominator">Denominator</label>
|
||||||
|
<input type="number" id="denominator" min="-2147483647" max="2147483647" />
|
||||||
|
</fieldset>
|
||||||
|
</form>
|
||||||
|
</section>
|
||||||
|
|
||||||
|
<!-- Output -->
|
||||||
|
<section class="container">
|
||||||
|
<span id="out"></span>
|
||||||
|
</section>
|
||||||
|
</div>
|
||||||
|
<div id="footer"></div>
|
||||||
|
</main>
|
||||||
|
|
||||||
|
<script src="bundle.js?v=%%VERSION_NUMBER%%"></script>
|
||||||
|
</body>
|
||||||
|
</html>
|
|
@ -0,0 +1,174 @@
|
||||||
|
import {$, doAfterLoad, footer, header, nav, showPage} from "@fwdekker/template";
|
||||||
|
import katex from "katex";
|
||||||
|
import "katex/dist/katex.min.css";
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* A fraction that can be simplified.
|
||||||
|
*/
|
||||||
|
class Fraction {
|
||||||
|
constructor(numerator, denominator) {
|
||||||
|
if (!isInt(numerator) || !isInt(denominator))
|
||||||
|
throw new Error("Numerator and denominator must be integer-like.");
|
||||||
|
|
||||||
|
this.sign = numerator < 0 !== denominator < 0 ? -1 : 1;
|
||||||
|
this.numerator = Math.abs(+numerator);
|
||||||
|
this.denominator = Math.abs(+denominator);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Returns a new fraction such that the gcd of the numerator and denominator is 1.
|
||||||
|
*
|
||||||
|
* @returns {Fraction} a new fraction such that the gcd of the numerator and denominator is 1
|
||||||
|
*/
|
||||||
|
simplify() {
|
||||||
|
const common = gcd(this.numerator, this.denominator);
|
||||||
|
return new Fraction(this.sign * this.numerator / common, this.denominator / common);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Returns the LaTeX string representation of this fraction.
|
||||||
|
*
|
||||||
|
* @returns {string} the LaTeX string representation of this fraction
|
||||||
|
*/
|
||||||
|
toString() {
|
||||||
|
let frac = `\\frac{${this.numerator}}{${this.denominator}}`;
|
||||||
|
if (this.sign === -1)
|
||||||
|
frac = `-${frac}`;
|
||||||
|
|
||||||
|
return frac;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Returns the LaTeX string representation of this fraction, or of the numerator if the denominator is 1.
|
||||||
|
*
|
||||||
|
* @returns {string} the LaTeX string representation of this fraction, or of the numerator if the denominator
|
||||||
|
* is 1.
|
||||||
|
*/
|
||||||
|
toReducedString() {
|
||||||
|
if (this.numerator === 0)
|
||||||
|
return "0";
|
||||||
|
|
||||||
|
let frac;
|
||||||
|
if (this.denominator === 1)
|
||||||
|
frac = `${this.numerator}`;
|
||||||
|
else
|
||||||
|
frac = `\\frac{${this.numerator}}{${this.denominator}}`;
|
||||||
|
|
||||||
|
if (this.sign === -1)
|
||||||
|
frac = `-${frac}`;
|
||||||
|
|
||||||
|
return frac;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// noinspection EqualityComparisonWithCoercionJS
|
||||||
|
/**
|
||||||
|
* Returns `true` if and only if `n` is an integer.
|
||||||
|
*
|
||||||
|
* @param n {*} the value to check for integerness
|
||||||
|
* @returns {boolean} `true` if and only if `n` is an integer
|
||||||
|
*/
|
||||||
|
const isInt = n => n == parseInt(n);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Returns the greatest common divisor of `a` and `b`.
|
||||||
|
*
|
||||||
|
* @param a {number} the first operand
|
||||||
|
* @param b {number} the second operand
|
||||||
|
* @returns {number} the greatest common divisor of `a` and `b`
|
||||||
|
*/
|
||||||
|
const gcd = (a, b) => {
|
||||||
|
if (b > a) {
|
||||||
|
const temp = a;
|
||||||
|
a = b;
|
||||||
|
b = temp;
|
||||||
|
}
|
||||||
|
|
||||||
|
while (true) {
|
||||||
|
if (b === 0) return a;
|
||||||
|
a %= b;
|
||||||
|
|
||||||
|
if (a === 0) return b;
|
||||||
|
b %= a;
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
doAfterLoad(() => {
|
||||||
|
$("#nav").appendChild(nav("/Tools/Simplify Fractions/"));
|
||||||
|
$("#header").appendChild(header({
|
||||||
|
title: "Simplify Fractions",
|
||||||
|
description: "Simple web tool for simplifying fractions"
|
||||||
|
}));
|
||||||
|
$("#footer").appendChild(footer({
|
||||||
|
author: "Felix W. Dekker",
|
||||||
|
authorURL: "https://fwdekker.com/",
|
||||||
|
license: "MIT License",
|
||||||
|
licenseURL: "https://git.fwdekker.com/FWDekker/simplify-fractions/src/branch/master/LICENSE",
|
||||||
|
vcs: "git",
|
||||||
|
vcsURL: "https://git.fwdekker.com/FWDekker/simplify-fractions/",
|
||||||
|
version: "v%%VERSION_NUMBER%%"
|
||||||
|
}));
|
||||||
|
showPage();
|
||||||
|
});
|
||||||
|
|
||||||
|
doAfterLoad(() => {
|
||||||
|
const numeratorInput = $("#numerator");
|
||||||
|
const denominatorInput = $("#denominator");
|
||||||
|
const outputField = $("#out");
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Returns `undefined` if the inputs are valid, or a tuple consisting of the invalid element and an explanation
|
||||||
|
* of its invalidity otherwise.
|
||||||
|
*
|
||||||
|
* @param numerator {string} the numerator value
|
||||||
|
* @param denominator {string} the denominator value
|
||||||
|
* @returns {(HTMLElement|string)[]|undefined} `undefined` if the inputs are valid, or a tuple consisting of the
|
||||||
|
* invalid element and an explanation of its invalidity otherwise
|
||||||
|
*/
|
||||||
|
const validateInputs = (numerator, denominator) => {
|
||||||
|
if (numerator === "")
|
||||||
|
return [numeratorInput, ""];
|
||||||
|
if (denominator === "")
|
||||||
|
return [denominatorInput, ""];
|
||||||
|
if (!isInt(numerator))
|
||||||
|
return [numeratorInput, "Numerator must be an integer."];
|
||||||
|
if (!isInt(denominator))
|
||||||
|
return [denominatorInput, "Denominator must be an integer."];
|
||||||
|
if (+denominator === 0)
|
||||||
|
return [denominatorInput, "Denominator must not be 0."];
|
||||||
|
|
||||||
|
return undefined;
|
||||||
|
};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Reads the inputs and tries to output the simplified fraction.
|
||||||
|
*/
|
||||||
|
const outputSimplifiedFraction = () => {
|
||||||
|
let numerator = numeratorInput.value;
|
||||||
|
let denominator = denominatorInput.value;
|
||||||
|
|
||||||
|
const validationInfo = validateInputs(numerator, denominator);
|
||||||
|
if (validationInfo !== undefined) {
|
||||||
|
outputField.innerText = validationInfo[1];
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
const fraction = new Fraction(numeratorInput.value, denominatorInput.value);
|
||||||
|
outputField.innerHTML = katex.renderToString(
|
||||||
|
fraction.toString() + " = " + fraction.simplify().toReducedString(),
|
||||||
|
{
|
||||||
|
displayMode: true,
|
||||||
|
throwOnError: false
|
||||||
|
}
|
||||||
|
);
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
numeratorInput.addEventListener("input", () => outputSimplifiedFraction());
|
||||||
|
denominatorInput.addEventListener("input", () => outputSimplifiedFraction());
|
||||||
|
});
|
Loading…
Reference in New Issue