CODEWITHSUNDEEP
javascriptregex
Gaurav Wadhwani
Gaurav Wadhwani

Reputation: 378

Regex not working to test Mobile Number

I want to make a regex that tests for mobile nos (10 digit, starting digit can be 7,8 or 9)

I worked out this -> /^(7|8|9)[\d]{9,9}$/

My code is

function testPhone()
    {
       var pattern = /^(7|8|9)[\d]{9,9}$/;
        var phoneNo = document.getElementById('phoneNo');

            if (!pattern.test(phoneNo))
            {
                alert("It is not valid mobile number!");
            }

    }



 <input type="text" name="phoneNo"  maxlength="10"  size="10"  >
 <input type="submit" value="Search" onclick="testPhone()">

Somehow it always displays the alert message. I also tested my regex here (http://www.regextester.com/) . It works here. Please help.

Upvotes: 0

Views: 435

Answers (3)

Anirudha
Anirudha

Reputation: 32807

It should be

var phoneNo = document.getElementById('phoneNo').value;
                                                   ^

and regex should be

/^(7|8|9)\d{9}$/

no need of {9,9} and [\d]

Upvotes: 1

John Woo
John Woo

Reputation: 263743

you forgot .value,

var phoneNo = document.getElementById('phoneNo').value;

try this pattern,

^[7-9](\d){9}$

Upvotes: 3

Prinzhorn
Prinzhorn

Reputation: 22508

It's

var phoneNo = document.getElementById('phoneNo').value;

Note the .value.

Oh, and your input doesn't have an id.

Upvotes: 4

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