"DOM" Code Answer's
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HTML DOM
// This is a DOM interface with JAVASCRIPT by using JSON data
// Creating Table with DOM objects
var myData = [{user: "James", address: "123 Keele St. Toronto, ON.", email:"[email protected]"},
{user: "Mary", address: "92 Appleby Ave. Hamilton, ON.", email:"[email protected]"},
{user: "Paul", address: "70 The Pond Rd. North Youk, ON.", email:"[email protected]"},
{user: "Catherine", address: "1121 New St. Burlington, ON.", email:"[email protected]"}];
window.onload = function() {
document.querySelector("#button1").onclick = generateTable;
}
function generateTable(){
// get the reference for the body
var tbl = document.querySelector("#outputTable");
// revove existing Body element
var tblExistingBody = tbl.querySelector("tbody");
if (tblExistingBody) tbl.removeChild(tblExistingBody);
// creates a <tbody> element
var tblBody = document.createElement("tbody");
// creating all table rows
for (var i = 0; i < myData.length; i++) {
// creates a table row
var row = document.createElement("tr");
// Create a <td> element and put them at the end of the table row
row.appendChild(getTdElement(myData[i].user));
row.appendChild(getTdElement(myData[i].address));
row.appendChild(getTdLinkElement(myData[i].email, myData[i].email));
// add the row to the end of the table body
tblBody.appendChild(row);
}
// put the <tbody> in the <table>
tbl.appendChild(tblBody);
}
// Create a <td> element and a text
function getTdElement(text) {
var cell = document.createElement("td");
var cellText = document.createTextNode(text);
cell.appendChild(cellText);
return cell;
}
// Create a <td> element with a hyperlink
function getTdLinkElement(text, href) {
var anchor = document.createElement("a");
anchor.setAttribute("href", "mailto:"+href);
var anchorText = document.createTextNode(text);
anchor.appendChild(anchorText);
var cell = document.createElement("td");
cell.appendChild(anchor);
return cell;
}
what is document object
document.anchors Returns all <a> elements that have a name attribute 1
document.applets Returns all <applet> elements (Deprecated in HTML5) 1
document.baseURI Returns the absolute base URI of the document 3
document.body Returns the <body> element 1
document.cookie Returns the document's cookie 1
document.doctype Returns the document's doctype 3
document.documentElement Returns the <html> element 3
document.documentMode Returns the mode used by the browser 3
document.documentURI Returns the URI of the document 3
document.domain Returns the domain name of the document server 1
document.embeds Returns all <embed> elements 3
document.forms Returns all <form> elements 1
document.head Returns the <head> element 3
document.images Returns all <img> elements 1
document.implementation Returns the DOM implementation 3
document.inputEncoding Returns the document's encoding (character set) 3
document.lastModified Returns the date and time the document was updated 3
document.links Returns all <area> and <a> elements that have a href attribute 1
document.readyState Returns the (loading) status of the document 3
document.referrer Returns the URI of the referrer (the linking document) 1
document.scripts Returns all <script> elements 3
document.strictErrorChecking Returns if error checking is enforced 3
document.title Returns the <title> element 1
document.URL Returns the complete URL of the document 1
Html dom
<!-- USING EVENT HANDLER FOR DOM HTML -->
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>WEB222</title>
<style>
body { margin: 0 18%; }
</style>
<script>
window.onload = function() { // why use window.onload?
var elem = document.querySelector("#myBtn");
elem.addEventListener( "click", displayDate );
}
function displayDate() {
document.querySelector("#demo").innerHTML = (new Date()).toLocaleString();
}
</script>
</head>
<body>
<h1>WEB222 - HTML DOM Event</h1>
<p>Click "Show Current Time" to execute the displayDate() function.</p>
<p id="demo"></p>
<button id="myBtn">Show Current Time</button>
<br>
<!-- for downloading source files -->
<p><a href="" Download>Download</a></p>
</body>
</html>
DOM
<body onload="window.alert('Welcome to my home page!');">
Source: developer.mozilla.org
JavaScript and HTML DOM Reference
const contacts = ['Chris:2232322', 'Sarah:3453456', 'Bill:7654322', 'Mary:9998769', 'Dianne:9384975'];
const para = document.querySelector('p');
const input = document.querySelector('input');
const btn = document.querySelector('button');
btn.addEventListener('click', function() {
let searchName = input.value.toLowerCase();
input.value = '';
input.focus();
for (let i = 0; i < contacts.length; i++) {
let splitContact = contacts[i].split(':');
if (splitContact[0].toLowerCase() === searchName) {
para.textContent = splitContact[0] + '\'s number is ' + splitContact[1] + '.';
break;
} else {
para.textContent = 'Contact not found.';
}
}
});
Source: developer.mozilla.org
dom javascript frontend
<!DOCTYPE html>
<html>
<head>
<title>DOM Page</title>
</head>
<body>
<h1>The main heading</h1>
<p class="highlight">An interesting summary of this content.</p>
<p>
Some supplementary details to accompany our discussion.
It also has a <a href="#">link</a>.
</p>
<div class="widget">
<div class="foo"></div>
</div>
<table>
<thead>
<tr>
<th>School</th>
<th>Color</th>
</tr>
</thead>
<tbody>
<tr>
<td>UNC Chapel Hill</td>
<td>Carolina Blue</td>
</tr>
<tr>
<td>NC State</td>
<td>Wolfpack Red</td>
</tr>
</tbody>
</table>
</body>
</html>
Source: web-fundamentals.dev
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