Mandatory 10 digit phone number for certain fields

[booher04]

I have a need for a client script for a catalog item that will not allow you to submit unless the phone number is 10 digits, however on the form I created there is a choice list that has 3 choices, change existing efax account, request new efax number and port existing number.  Each of these when selected shows different variables.  The script I used worked fine for other catalog items but this one has the choice list and if you have 1 selected, the fields for the other 2 are hidden and the script is still requiring it.  My question is, how would I add to the script I have here to say has to be 10 digits and change existing efax account is selected.  I put 3 client scripts for each choice as of now, is there a better way to achieve this?

function onSubmit() {

//Type appropriate comment here, and begin script below

var phone = g_form.getValue('current_number');

if(phone.length!== 10 && 'type_efax_request' == 'change_existing_efax_account'){

alert("Phone number should be 10 digits for current eFax number");

return false;

}

}

the choice field name is type_efax_request, then the choices for it are:

change_existing_efax_account

request_new_efax_number

port_existing_number

[Gopal Harbola1]

return true or false in your script to restrict or allow submit the form.

[Gopal Harbola1]

var _pNumber = "0123456789"

var flag = isValidPhoneNo(pNumber );

alert("flag: " + flag);

function isValidPhoneNo(phoneNumber){
  var phoneNoRegEx = /^\d{10}$/;
  if((phoneNumber.value.match(phoneNoRegEx)){
      return true;
  }
  else{
      alert("message");
      return false;
    }
}

//----------------------------------------------

like if this serve your requirement.