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Thread: Validate field if something is in it

  1. #1
    Join Date
    Aug 2010

    Validate field if something is in it

    Hello all,

    I am trying to write some Javascript to validate a certain field. I have it working but I want to make it only validate if there is something in that field. I've looked at different tutorials online but I can't seem to get it to work. This is what I have so far:

    if((form.fieldname.value.length < 5))
    {alert("Field must have at least 5 characters!");
    return false;

    I don't want this statement to run unless there is something entered into the field.Thanks.

  2. #2
    Join Date
    May 2006
    Somewhere behind your screen
    var val = document.forms['formname'].elements['fieldname'].value;
    if((val.length > 0) && (val.length < 5))
    signature under construction

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