Practice Set, Week 8, Modifying the DOM, Problem 2
by Larry Adams
HTML
<h3>Practice Set #2, Week 8, Modifying the DOM</h3>
<p>We're going to practice the steps of manually creating an adding a DOM element to a page. To do this, we'll create a DIV with id="myNewDiv" that contains some text, and attach it to the div already on this page with id="addNewOneHere". If you've done it right, it will appear with a red background.</p>
<p>Hint: There's five steps here, as shown in the lessons, particularly lesson 3 section 2, the TOC example in Video 8.6, and the <a href="http://javascript.info/tutorial/modifying-document#creating-elements" target="blank">readings on javascript.info</a>. You'll have to:
<ol>
<li>create a 'DIV' element node and assign it to a variable</li>
<li>using setAttribute(), give it an ID attribute of "myNewDiv"</li>
<li>create a text node with some text of your choosing, and assign it to a variable</li>
<li>append you text node to your element</li>
<li>append your new element to the existing div which has id="addNewOneHere"</li>
</ol>
</p>
<div id="addNewOneHere">This is the div where you'll add your new element using Javascript. </div>
CSS
div#addNewOneHere div#myNewDiv {
background-color:red;
}
JavaScript
// your solution here
// create a 'DIV' element node and assign it to a variable
var myNewDiv = document.createElement("myNewDiv");
// using setAttribute(), give it an ID attribute of "myNewDiv"
myNewDiv.setAttribute('id', 'myNewDiv');
// create a text node with some text of your choosing, and assign it to a variable
var textNode = document.createTextNode('This is myNewText');
// append you text node to your element
myNewDiv.appendChild(textNode);
document.getElementById("addNewOneHere").appendChild(textNode);
console.log(textNode);
console.log(myNewDiv);