URL is valid or Invalid can check the RegExp in match method in JavaScript.
URL validator JavaScript
function validURL(str) {
var pattern = new RegExp('^(https?:\\/\\/)?'+ // protocol
'((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|'+ // domain name
'((\\d{1,3}\\.){3}\\d{1,3}))'+ // OR ip (v4) address
'(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*'+ // port and path
'(\\?[;&a-z\\d%_.~+=-]*)?'+ // query string
'(\\#[-a-z\\d_]*)?$','i'); // fragment locator
return !!pattern.test(str);
}URL validation regex JavaScript Example
HTML example code: – Check if a JavaScript string is a URL
A validate URL with or without http No matter what function return true and false based on structure of URL.
<html>
<body>
<script>
function isValidURL(string) {
var res = string.match(/(http(s)?:\/\/.)?(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)/g);
return (res !== null)
};
var testCase1 = "http://eyehunts.com";
alert(isValidURL(testCase1));
</script>
</body>
</html>Output:
Do comment if you have any suggestions or doubts in this JS URL topic.
Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version