如何根据电子邮件地址域/ TLD验证jQuery中的表单字段？ （.com，.net，.edu？）

Question

What would be the best method using jQuery to validate a field to ensure it ends in a specific TLD? Say I want it to only validate the email field if it ends in .edu ?

**edit: just realized jQuery has it's own built-in validation, and not sure if I even need the bassistance plugin ?

Answer 1

I am not too familiar with that particular plugin, but the it looks like you should be able to extend it with syntax like the following:

jQuery.validator.addMethod("emailOrg", function(email_org, element) {
    email_org = email_org.replace(/\s+/g, ""); 
    return this.optional(element) || /^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+org$/i.test(email_org);
}, "Please specify a valid .org email");

$("#myform").validate({
  rules: {
    field: {
      required: true,
      emailOrg: true
    }
  }
});

That example would validate all emails that end in org and no others.