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dom-query-js.html
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dom-query-js.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>DOM: Query and Modify</title>
</head>
<body>
<h1 id="main-header">Hello World!</h1>
<ul>
<li data-dbid="1">Item 1</li>
<li data-dbid="2">Item 2</li>
<li data-dbid="3">Item 3</li>
<li data-dbid="4">Item 4</li>
<li data-dbid="5">Item 5</li>
</ul>
<h2 id="sub-header">Hello Again.</h2>
<p class="sub-paragraph">
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do
eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim
ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut
aliquip ex ea commodo consequat. Duis aute irure dolor in
reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla
pariatur. Excepteur sint occaecat cupidatat non proident, sunt in
culpa qui officia deserunt mollit anim id est laborum.
</p>
<button type="button" id="btn1">Main-Header</button>
<button type="button" id="btn2">List</button>
<button type="button" id="btn3">Sub-Header</button>
<button type="button" id="btn4">Sub-Paragraph</button>
<button type="button" id="btn5">List</button>
<script>
(function() {
"use strict";
// TODO: Uncomment next line and get the main header element by id
// var mainHeader = document.getElementById("main-header");
// TODO: Set inner html of mainHeader to "JavaScript is Cool"
// var jsIsCool = mainHeader.innerHTML="JavaScript is Cool"
document.getElementById("btn1").addEventListener('click', mainHeader);
function mainHeader() {
document.getElementById("main-header").innerText= "Javascript is Cool."
}
// TODO: Uncomment the next line and get the sub header element by id
// var subHeader = document.getElementById("sub-header");
// TODO: Set the text color of subHeader to blue
// subHeader.style.color = "blue";
document.getElementById("btn3").addEventListener('click', subHeader);
function subHeader(){
document.getElementById("sub-header").style.color = "blue";
}
// TODO: Uncomment the next line and get all list items
// var listItems = document.getElementsByTagName("li");
// TODO: Set text color on every other list item to grey
// for (let i = 0; i < listItems.length; i++){
// if (i % 2 == 0) {
// listItems[i].style.color = "grey";
// }
// }
document.getElementById("btn2").addEventListener('click', listItems);
function listItems(){
var listStuff = document.getElementsByTagName("li")
for (let i = 0; i < listStuff.length; i++){
if (i % 2 == 0) {
listStuff[i].style.color = "grey";
}
}
}
// TODO: Set text color of li with dbid = 1 to blue
// listItems[0].style.color = "blue";
document.getElementById("btn5").addEventListener('click', list1);
function list1(){
document.querySelector("li").style.color = "blue";
}
// TODO: Uncomment the next line and get all elements with class name sub-paragraph
// var subParagraphs = document.querySelector(".sub-paragraph");
// TODO: Change the text in the first sub paragraph to "Mission Accomplished!"
// subParagraphs.innerText = "Mission Accomplished!"
document.getElementById("btn4").addEventListener('click', subParagraph);
function subParagraph(){
document.querySelector(".sub-paragraph").innerText = "Mission Accomplished!";
}
})();
</script>
</body>
</html>