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  1. #1
    New to the CF scene
    Join Date
    Mar 2003
    Thanked 0 Times in 0 Posts

    Regular Expressions


    I need to convert phone number.
    If the phone number 1234567890 is entered, then on submit the number should be converted to (123)456-7890.
    This what I got sofar.

    function convert_telephone1() {
    var temp7 = document.form1.telephone1.value;
    temp7 = temp7.replace(temp7, /^\(?(\d{3})\)?[\.\-\/]?(\d{3})[\.\-\/]?(\d{4})$/); // Phone no. - Validation
    document.form1.telephone1.value = temp7;
    <input type="text" name="telephone1">
    <input type="button" onClick="convert_telephone1();" value="Validate Phone number1">

    * Could you also explain where I went wrong.


  • #2
    Master Coder
    Join Date
    Feb 2003
    Umeå, Sweden
    Thanked 83 Times in 74 Posts
    To dissect this:
    • /^ - begin regex and match beginning of string
    • \(? - match zero or one opening paren
    • (\d{3}) - match three digits and capture the match
    • \)? - match zero or one closing paren
    • [\.\-\/]? - match zero or one fullstop, backslach or slash
    • (\d{3}) - match three digits and capture the match
    • [\.\-\/]? - match zero or one fullstop, backslach or slash
    • (\d{4}) - match four digits and capture the match
    • $/ - match end of string and end regex

    However, where you went wrong:
    you got the order of the string and regex wrong.

    Also, what do you want to do, really? Do you really want to replace that string?
    Last edited by liorean; 05-09-2004 at 10:02 PM.
    liorean <[lio@wg]>
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