Does someone have a regex for validating urls (NOT for finding them inside a text passage)? JavaScript snippet would be preferred.
This question is related to
javascript
regex
validation
url
After a long research I build this reg expression. I hope it will help others too.......
url = 'https://google.co.in';
var re = /[a-z0-9-\.]+\.[a-z]{2,4}\/?([^\s<>\#%"\,\{\}\\|\\\^\[\]`]+)?$/;
if (!re.test(url)) {
alert("url error");
return false;
}else{
alert('success')
}
/(?:http[s]?\/\/)?(?:[\w\-]+(?::[\w\-]+)?@)?(?:[\w\-]+\.)+(?:[a-z]{2,4})(?::[0-9]+)?(?:\/[\w\-\.%]+)*(?:\?(?:[\w\-\.%]+=[\w\-\.%!]+&?)+)?(#\w+\-\.%!)?/
I've found some success with this:
/^((ftp|http|https):\/\/)?www\.([A-z]+)\.([A-z]{2,})/
It's obviously not perfect but it handled my cases pretty well
I use the /^[a-z]+:[^:]+$/i regular expression for URL validation. See an example of my cross-browser InputKeyFilter code with URL validation.
<!doctype html>_x000D_
<html xmlns="http://www.w3.org/1999/xhtml" >_x000D_
<head>_x000D_
<title>Input Key Filter Test</title>_x000D_
<meta name="author" content="Andrej Hristoliubov [email protected]">_x000D_
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>_x000D_
_x000D_
<!-- For compatibility of IE browser with audio element in the beep() function._x000D_
https://www.modern.ie/en-us/performance/how-to-use-x-ua-compatible -->_x000D_
<meta http-equiv="X-UA-Compatible" content="IE=9"/>_x000D_
_x000D_
<link rel="stylesheet" href="https://rawgit.com/anhr/InputKeyFilter/master/InputKeyFilter.css" type="text/css"> _x000D_
<script type="text/javascript" src="https://rawgit.com/anhr/InputKeyFilter/master/Common.js"></script>_x000D_
<script type="text/javascript" src="https://rawgit.com/anhr/InputKeyFilter/master/InputKeyFilter.js"></script>_x000D_
_x000D_
</head>_x000D_
<body>_x000D_
URL: _x000D_
<input type="url" id="Url" value=":"/>_x000D_
<script>_x000D_
CreateUrlFilter("Url", function(event){//onChange event_x000D_
inputKeyFilter.RemoveMyTooltip();_x000D_
var elementNewInteger = document.getElementById("NewUrl");_x000D_
elementNewInteger.innerHTML = this.value;_x000D_
}_x000D_
_x000D_
//onblur event. Use this function if you want set focus to the input element again if input value is NaN. (empty or invalid)_x000D_
, function(event){ this.ikf.customFilter(this); }_x000D_
);_x000D_
</script>_x000D_
New URL: <span id="NewUrl"></span>_x000D_
_x000D_
</body>_x000D_
</html>Also see my page example of the input key filter.
Try this it works for me:
/^(http[s]?:\/\/){0,1}(w{3,3}\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/;
try with this:
var RegExp =/^(?:(?:https?|ftp):\/\/)(?:\S+(?::\S*)?@)?(?:(?!10(?:\.\d{1,3}){3})(?!127(?:\.\d{1,3}){3})(?!169\.254(?:\.\d{1,3}){2})(?!192\.168(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\u00a1-\uffff0-9]+-?)*[a-z\u00a1-\uffff0-9]+)(?:\.(?:[a-z\u00a1-\uffff0-9]+-?)*[a-z\u00a1-\uffff0-9]+)*(?:\.(?:[a-z\u00a1-\uffff]{2,})))(?::\d{2,5})?(?:\/[^\s]*)?$/i;
You can simple use type="url" in your input and the check it with checkValidity() in js
E.g:
your.html
<input id="foo" type="url">
your.js
$("#foo").on("keyup", function() {
if (this.checkValidity()) {
// The url is valid
} else {
// The url is invalid
}
});
Try this regex
/(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/
It works best for me.
In the accepted answer bobince got it right: validating only the scheme name, ://, and spaces and double quotes is usually enough. Here is how the validation can be implemented in JavaScript:
var url = 'http://www.google.com';
var valid = /^(ftp|http|https):\/\/[^ "]+$/.test(url);
// true
or
var r = /^(ftp|http|https):\/\/[^ "]+$/;
r.test('http://www.goo le.com');
// false
or
var url = 'http:www.google.com';
var r = new RegExp(/^(ftp|http|https):\/\/[^ "]+$/);
r.test(url);
// false
References for syntax:
Try this regex, it works for me:
function isUrl(s) {
var regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/
return regexp.test(s);
}
I couldn't find one that worked well for my needs. Written and post @ https://gist.github.com/geoffreyrobichaux/0a7774b424703b6c0fffad309ab0ad0a
function validURL(s) {_x000D_
var regexp = /^(ftp|http|https|chrome|:\/\/|\.|@){2,}(localhost|\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}|\S*:\w*@)*([a-zA-Z]|(\d{1,3}|\.){7}){1,}(\w|\.{2,}|\.[a-zA-Z]{2,3}|\/|\?|&|:\d|@|=|\/|\(.*\)|#|-|%)*$/gum_x000D_
return regexp.test(s);_x000D_
}<html>
<head>
<title>URL</title>
<script type="text/javascript">
function validate() {
var url = document.getElementById("url").value;
var pattern = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/;
if (pattern.test(url)) {
alert("Url is valid");
return true;
}
alert("Url is not valid!");
return false;
}
</script>
</head>
<body>
URL :
<input type="text" name="url" id="url" />
<input type="submit" value="Check" onclick="validate();" />
</body>
</html>
This REGEX is a patch from @Aamir answer that worked for me
/((?:(?:http?|ftp)[s]*:\/\/)?[a-z0-9-%\/\&=?\.]+\.[a-z]{2,4}\/?([^\s<>\#%"\,\{\}\\|\\\^\[\]`]+)?)/gi
It matches these URL formats
Source: Stackoverflow.com