Javascript name validation

Question

I have a javascript function written to validate a field on my form. This function is supposed to make sure the field is not empty, does not exceed the limit of 35 characters an

Answer 1

Try to rename submit button, rid of id and name "submit" (rename to "doSubmit" or smth), it can cause problems and conflict with event "submit" of form.

Answer 2

UPDATED:

Sorry, the problem is with your regex, i missed that, change to this its fully working:

  var ck_password =  /^[A-Za-z0-9-]/;

            if(!ck_password.test(stringf))
            {

                alert("Family name can only contain alphanumeric characters and hypehns(-)")

            }

Console in chrome, go to the OPTIONS in the right top coner, select TOOLS, then DEVELOPER TOOLS.

Answer 3

Your regular expression is broken. You've escaped the closing square bracket around the character set. Try this:

else if (/[^a-zA-Z0-9\-]/.test( stringf ))

Also, there's a lot of weird clutter in there that's annoying but not fatal: How many times do you really need to call getElementById('family') in that method? Once.

if (stringf=="")
{
    alert("Family name must be filled out");
    return false;
}
else if (stringf.length > 35)
{
    alert("Family name cannot be more than 35 characters");
    return false;
}
else if (/[^a-zA-Z0-9\-]/.test( stringf ))
{
    alert("Family name can only contain alphanumeric characters and hypehns(-)")
    return false;
}
return true;