Javascript Regex: Validate phone number

Question

I want to validate a 11 digit phone number that must start with 09 (i.e. 09123456789) using javascript for client side check.

this is my code:

function validatePhone(number) {
    var re = /^09[0-9]{9}$/;
    return re.test(number);
}

It worked correctly as far as I know at first but now it return invalid for any number I use. Does anyone know what is wrong with my code? By the way as I'm using jQuery, if there is a better way with jquery that would be much better.

What number did you use? Also, jquery is not the magical solution to all problems. Careful debugging is. — user1726343
– user1726343, Commented Nov 18, 2012 at 18:46

Atif · Accepted Answer · 2012-11-18 19:02:46Z

6

I am assuming you are sending an integer in the argument, pass it as a string

function validatePhone(number) {
    var re = /^09[0-9]{9}$/;
    return re.test(number);
}

alert(validatePhone('09123456789'));
// returns true    
alert(validatePhone(09123456789));    
// returns false

http://jsfiddle.net/3bFwd/

edited Nov 18, 2012 at 19:02

answered Nov 18, 2012 at 18:46

Atif

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14 Comments

Ashkan Mobayen Khiabani Over a year ago

yep, you are right the problem is i was checking .text() instead of .val() . my bad programming for long hours causes this stupid mistakes. Thanks alot

I Hate Lazy Over a year ago

@AshkanMobayenKhiabani, Atif: Both .text() and .val() return a string. The actual issue is that .text() doesn't return the value, so you were getting an empty string, not a number.

Atif Over a year ago

@Asad, sorry about that, was trying to demonstrate quickly and copy and pasted everything..

Mayank K. Swami Over a year ago

@user1689607 this is what exactly happen ... if answer +1

I Hate Lazy Over a year ago

@NullPointer: Thanks, but I'd rather see the question deleted to reduce SO clutter.

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