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JavaScript: How to Create WordPress Slugs

Create slugs with only standard characters for use in a URL or other purpose.

This code is compatible with all browsers including Internet Explorer 11 (IE11).

Use the regular expression /\W+/g to replace unwanted URL characters with a dash (-) and prevent multiple dashes running together. In other words, sanitize names and titles. Run the below code to see it in action.

See also: Use .NET C# RegEx to create WordPress slugs.


<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Create a WordPress URL Slug</title>
	<script type="text/javascript">
		function slug(input) {
			input.value = input.value.trim().replace(/\W+/g,'-').toLowerCase();
		}
		function slug2(input) {
			input.value = input.value.trim().replace(/\W+(?!$)/g,'-').toLowerCase();
		}
	</script>
</head>
<body>
	<p><input type="text" onblur="slug(this);" size="100" placeholder="Enter text to turn into a slug" /></p>
	<p><input type="text" onblur="slug2(this);" size="100" placeholder="Enter text to turn into an alternate slug version" /></p>
	<p><button type="button">OK</button></p>
</body>
</html>

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