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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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