Given an HTML document, the task is to change the background color of the document using JavaScript and jQuery.
Approach 1: This approach uses JavaScript to change the background-color after clicking the button. Use HTML DOM Style backgroundColor Property to change the background color after clicking the button. This property is used to set the background-color of an element.
Example: This example changes the background color with the help of JavaScript.
html
<!DOCTYPE HTML>
<html>
<head>
<title>
How to change the background color
after clicking the button ?
</title>
</head>
<body style="text-align:center;">
<h1 style="color:green;">
GeeksforGeeks
</h1>
<h3>
Click on button to change the
background color
</h3>
<button onclick="myFunc()">
Click here
</button>
<h2 id="GFG" style="color:green;"></h2>
<script>
let result = document.getElementById("GFG");
function changeColor(color) {
document.body.style.background = color;
}
function myFunc() {
changeColor('yellow');
result.innerHTML = "Background Color changed";
}
</script>
</body>
</html>
|
Output:
Approach 2: This approach uses jQuery to change the background color after clicking the button.
- The text() method is used to set the text content to the selected element.
- The on() method is used as event handlers for the selected elements and child elements.
- The css() method is used to change/set the background color of the element.
Example: This example changes the background color with the help of JQuery.
html
<!DOCTYPE HTML>
<html>
<head>
<title>
How to change the background color
after click on button in jQuery ?
</title>
<script src=
</script>
</head>
<body style="text-align:center;">
<h1 style="color:green;">
GeeksforGeeks
</h1>
<h3>
Click on button to change
the background color
</h3>
<button>
Click here
</button>
<h2 id="GFG" style="color:green;"></h2>
<script>
$('button').on('click', function () {
$('body').css('background', '#ccc');
$('#GFG').text("Background Color Changed!");
});
</script>
</body>
</html>
|
Output:
JavaScript is best known for web page development but it is also used in a variety of non-browser environments. You can learn JavaScript from the ground up by following this JavaScript Tutorial and JavaScript Examples.
jQuery is an open-source JavaScript library that simplifies the interactions between an HTML/CSS document, It is widely famous for it’s philosophy of “Write less, do more”. You can learn jQuery from the ground up by following this jQuery Tutorial and jQuery Examples.
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Last Updated :
28 Sep, 2023
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