js date validation problem

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C#

re = /^(\d{1,2})-(\d{1,2})-(\d{4})*$/;
    if((form.dob.value="") || (!re.test(form.dob.value.match))) {
        alert("Error:enter Valid date of birth!");
        form.dob.focus();
        form.dob.style.background = "yellow";
        return false;
        }

this is my code when i enter date 10-10-2010 or suh type. it does not accept it

Posted 10-Aug-14 22:20pm

Tania Bangash

Updated 10-Aug-14 22:22pm

v2

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Peter Leow · Answer 1 · 2014-08-10T23:12:00

Quite a number of errors observed, just to mention a few:
1. syntax error like equal comparison should "==" not "=",
2. regex error: why having an "*" towards the end of the re pattern, "*" means none or more, which means it will accept "10-10-20142012" as well as "10-10-"
Check out this example:

XML

<!DOCTYPE html>
<html>
<body>

<form onsubmit="return validate();" action="">
  Date of Birth: <input type="text" name="dob" value=""><br>
  <input type="submit" value="Submit">
</form>

<script>
function validate()
{
    var dob = document.forms[0].dob;
    re = /^(\d{1,2})-(\d{1,2})-(\d{4})$/;

    if((dob.value == "") || (!dob.value.match(re))) {
        alert("Error:enter Valid date of birth!");
        dob.focus();
        dob.style.background = "yellow";
        return false;
    }
}
</script>

</body>
</html>