Regular expressions are flexible enough to validate a FaceBook URL in JavaScript.
Code of Facebook URL validation in JavaScript
<html>
<body>
<script>
var url1 = 'http://facebook2.com/anypage';
var url2 = 'http://www.facebook.com/anypage';
var url3 = 'http://facebook.com/anypage';
var url4 = 'https://facebook.com/anypage';
var url5 = 'https://www.facebook.com/anypage';
var url6 = 'facebook.com/anypage';
var url7 = 'www.facebook.com/anypage';
function validate_fb_url(url){
if (/^(https?:\/\/)?((w{3}\.)?)facebook.com\/.*/i.test(url))
return 'facebook';
return 'unknown';}
alert('This link is ' + validate_fb_url(url2));
</script>
</body>
</html>Output:
For Twitter and Facebook
function validate_url(url)
{
if (/^(https?:\/\/)?((w{3}\.)?)twitter\.com\/(#!\/)?[a-z0-9_]+$/i.test(url))
return 'twitter';
if (/^(https?:\/\/)?((w{3}\.)?)facebook.com\/.*/i.test(url))
return 'facebook';
return 'unknown';
}Do comment if you have any doubts and suggestion on this JS URL code.
Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version