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Remove all non numeric characters from a string in Javascript


In order to remove all non-numeric characters from a string, replace() function is used.
replace() Function: This function searches a string for a specific value, or a RegExp, and returns a new string where the replacement is done.

Example 1


<!DOCTYPE html>
<html>
	<head>
		<title>
			JavaScript | Strip all non-numeric
			characters from string
		</title>
	</head>
		
	<body style = "text-align:center;">
	
		<h1 style = "color:green;" >
			GeeksForGeeks
		</h1>
		
		<p id = "GFG_UP" style = "color:green; font-size: 20px;"></p>

		
		<button id="GFG_Button" onclick = "stripValues()">
			ClickHere
		</button>
		
		<p id = "GFG_P" style = "color:green; font-size: 20px;"></p>

		
		<script>
			var up = document.getElementById("GFG_UP");
			var down = document.getElementById("GFG_P");
			var str = "1Gee2ksFor345Geeks6";
			up.innerHTML = str;
			
			function stripValues() {
				down.innerHTML = str.replace(/\D/g,'');
			}
		</script>
	</body>
</html>				

Output


Example 2


<!DOCTYPE html>
<html>
	<head>
		<title>
			JavaScript | Strip all non-numeric
			characters from string
		</title>
	</head>
		
	<body style = "text-align:center;">
	
		<h1 style = "color:green;" >
			GeeksForGeeks
		</h1>
		<p id = "GFG_UP" style = "color:green; font-size: 20px;"></p>

		
		<button id="GFG_Button" onclick = "stripValues()">
			ClickHere
		</button>
		
		<p id = "GFG_P" style = "color:green; font-size: 20px;"></p>

		
		<script>
			var up = document.getElementById("GFG_UP");
			var down = document.getElementById("GFG_P");
			var str = "1Gee2ksFor345.Gee67ks89";
			up.innerHTML = str;
			
			function stripValues() {
				down.innerHTML = str.replace(/[^\d.-]/g, '');
			}
		</script>
	</body>
</html>				

Output



Conclusion

In this page (written and validated by ) you learned about . What's Next? If you are interested in completing Javascript tutorial, we encourage you simply to start here: Javascript Tutorial.



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