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130 lines
3.5 KiB
130 lines
3.5 KiB
3 months ago
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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>My Learning Website</title>
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<link href="/styles/styles.css" rel="stylesheet" type="text/css">
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<link href="/webdevelopment/styles/styles.css" rel="stylesheet" type="text/css">
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<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
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<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
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<!--[if lt IE 9]>
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<script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
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<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
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<![endif]-->
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</head>
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<body>
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<h1 class="courselink">JavaScript Essential Training</h1>
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<h2 class="lecturer">LinkedIn Learning : Morten Rand-Hendriksen</h2>
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<h1 class="episodetitle">Code Samples</h1>
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<article>
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<h2 class="sectiontitle">Looping Through Content</h2>
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<p>This is the JavaScript code for 08_14 in the exercise files. </p>
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<h2 class="sectiontitle">Variations of the for loop</h2>
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<pre class="codesample">
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/**
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* Loops Aplenty!
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* @link https://developer.mozilla.org/en-US/docs/Glossary/Callback_function
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*/
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const stuff = ["piggy", "headlamp", "pen", "pencil", "eraser", "water bottle"];
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const nestedObjects = {
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item01: {
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name: "piggy",
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type: "toy",
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weight: 30,
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},
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item02: {
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name: "headlamp",
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type: "equipment",
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weight: 120,
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},
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item03: {
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name: "pen",
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type: "tool",
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weight: 30,
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},
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item04: {
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name: "pencil",
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type: "tool",
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weight: 30,
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},
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item05: {
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name: "eraser",
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type: "tool",
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weight: 40,
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},
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item03: {
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name: "water bottle",
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type: "equipment",
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weight: 1300,
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},
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};
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const article = document.querySelector("article");
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let stuffList = document.createElement("ul");
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/**
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* for loop
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* @link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for
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*/
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for (let i = 0; i < stuff.length; i++) {
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let listItem = document.createElement("li");
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listItem.innerHTML = stuff[i];
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stuffList.append(listItem);
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}
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/**
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* for...of loop and arrays
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* @link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for...of
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*/
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for (const item of stuff) {
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let listItem = document.createElement("li");
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listItem.innerHTML = item;
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stuffList.append(listItem);
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}
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/**
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* foreach array method
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* @link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach
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*/
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stuff.forEach((item) => {
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let listItem = document.createElement("li");
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listItem.innerHTML = item;
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stuffList.append(listItem);
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});
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/**
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* for...in loop and objects
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* @link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for...of
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*/
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for (const singleObject in nestedObjects) {
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let listItem = document.createElement("li");
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listItem.innerHTML = `Name: ${nestedObjects[singleObject].name} : Type: ${nestedObjects[singleObject].type} : Weight: ${nestedObjects[singleObject].weight}`;
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stuffList.append(listItem);
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}
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article.append(stuffList);</pre>
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</article>
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<div class="btngroup">
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<button class="button" onclick="window.location.href='javascriptessentialtraining2021.html'">
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Course Contents
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</button>
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<button class="button" onclick="window.location.href='/webdevelopment/webdevelopment.html'">
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Web Development Page
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</button>
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<button class="button" onclick="window.location.href='/index.html'">
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Home
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</button>
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</div>
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</body>
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</html>
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