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JavaScript - Detect and Display Screen Resolution using JavaScript Function

In this example, we will learn how to detect and display Screen Resolution using JavaScript Function, we will create a JavaScript function that will detect and display using alert message box Screen Resolution on Button Click Event.

JavaScript Code Snippet - Detect and Display Screen Resolution using JavaScript Function

JavaScript function

<script type="text/javascript">
	function displayResolution(){
		if(window.screen){
			var width=screen.width;
			var height=screen.height;
			alert("Screen Resolution: " + width +"x"+ height);
		}
	}
</script>

HTML Source Code with JavaScript

<!--JavaScript - Detect and Display Screen Resolution using JavaScript Function.-->
<html>
	<head>
		<title>JavaScript - Detect and Display Screen Resolution using JavaScript Function.</title>
		<script type="text/javascript">
			function displayResolution(){
				if(window.screen){
					var width=screen.width;
					var height=screen.height;
					alert("Screen Resolution: " + width +"x"+ height);
				}
			}
		</script>
	</head>

	<body style="text-align: center;">
		<h1>JavaScript - Detect and Display Screen Resolution using JavaScript Function.</h1>
		<p><input type="button" value="Display Screen Resolution." onclick='displayResolution()'/>
	</body>

</html>

Result

detect screen resolution using javascript function




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