Calling multiple Javascript functions onSubmit

Question

I'm trying to call multiple JavaScript functions. It submits even though my functions return false. I receive the alert messages but it submits anyway.

This is my form.

<form name="myform" id="myform" action="receipt.html" method="post" onSubmit="return allValidation();">

Answer 1

You aren't returning anything in allValidation, so that it will continue to next method execution. Try this,

function allValidation() {
    return validateForm() && selectCountry() && validateEmail();
}

Answer 2

You can use multiple functions and then and their results to get final validation. and also add return true statements in all functions where validation is successful

function allValidation()
   {
      return (validateForm() && selectCountry() && validateEmail());
   }