Given an HTML document that is running on a device and the task is to find the width of the working screen device using JavaScript.
Example 1: This example uses window.innerWidth to get the width of the device screen. The innerWidth property is used to return the width of the device.
HTML
<!DOCTYPE html>
<html lang="en">
<head>
<title>
How to get the width of device
screen in JavaScript?
</title>
</head>
<body style="text-align: center;">
<h1 style="color:green;">
GeeksforGeeks
</h1>
<h3>
Click on Button to Get the
Width of Device's Screen
</h3>
<button onclick="GFG_Fun()">
Click Here
</button>
<p id="GFG"></p>
<script>
let elm = document.getElementById("GFG");
function GFG_Fun() {
let width = window.innerWidth;
elm.innerHTML = width + " pixels";
}
</script>
</body>
</html>
|
Output:
Example 2: This example uses document.documentElement.clientWidth method to get the width of device screen.
html
<!DOCTYPE html>
<html lang="en">
<head>
<title>
How to get the width of device
screen in JavaScript?
</title>
</head>
<body style="text-align: center;">
<h1 style="color:green;">
GeeksforGeeks
</h1>
<h3>
Click on Button to Get the
Width of Device's Screen
</h3>
<button onclick="GFG_Fun()">
Click Here
</button>
<p id="GFG">
</p>
<script>
let elm = document.getElementById("GFG");
function GFG_Fun() {
elm.innerHTML = document.
documentElement.clientWidth + " pixels";
}
</script>
</body>
</html>
|
Output:
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Last Updated :
20 Jun, 2023
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