JavaScript regex validate Telephone no.
JavaScript regex validate Telephone no.
View Answers
May 12, 2012 at 1:43 PM
<html>
<head>
<title>Phone number validation using regex</title>
<script type="text/javascript">
function validate() {
var phone = document.getElementById("phone").value;
var pattern = /^\d{3,5}([\-]\d{6,8})?$/;
if (pattern.test(phone)) {
alert("Your phone number : "+phone);
return true;
}
alert("It is not valid phone number!");
return false;
}
</script>
</head>
<body>
<h2>Validating phone number..</h2>
Enter Phone No. :
<input type="text" name="phone" id="phone" />
<input type="submit" value="Check" onclick="validate();" />
</body>
</html>
May 12, 2012 at 1:45 PM
The above example validate 10 digit (eg-9675647324) mobile number by using regular expression-
/^\d{3,5}([-]\d{6,8})$/; In this pattern u can put 3 to 5 length
of area code and â?? as a separator and 6 to 8 length of number. If you want to fix length 4 then put \d{4}.
Here /../(forward slashes) is used to quote your regular expression.
^ shows beginning of string.
\d{3,5} shows any digit 0-9 ranges 3 to 5.
[-] is used to put -.
$ is used for ending the string.
test() method takes one argument and check that to the pattern.
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