checkForm.js

function checkRequired(e) {
 valid = true;
 type = $(e).attr('type');
 if (type == 'radio') {
  name = $(e).attr('name');
  v = $("input[name='" + name + "']:checked").val();
  if (!v) {
   $("." + name + "_error").addClass("error");
   valid = false;
  }
 }
 if (type == 'text') {
  name = $(e).attr('name');
  v = $(e).val();
  if (!v) {
   $("." + name + "_error").addClass("error");
   $("#" + name).addClass("input_error");
   valid = false;
  }
 }
 if (type == 'file') {
  name = $(e).attr('name');
  v = $(e).val();
  if (!v) {
   $("." + name + "_error").addClass("error");
   $("#" + name).addClass("input_error");
   valid = false;
  }
 }
 if (type == 'select-one') {
  name = $(e).attr('name');
  v = $(e).val();
  if (!v) {
   $("." + name + "_error").addClass("error");
   $("#" + name).addClass("input_error");
   valid = false;
  }
 }
 return valid;
}

function checkEmail(e) {
 valid = true;
 type = $(e).attr('type');
 if (type == 'text') {
  name = $(e).attr('name');
  v = $(e).val();
  if (v == '') {} else {
   if (!isEmail(v)) {
    $("." + name + "_error").addClass("error");
    $("#" + name).addClass("input_error");
    valid = false;
   }
  }
 }
 return valid;
}

function isEmail(v) {
 var filter = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
 if (filter.test(v)) {
  return true;
 } else {
  return false;
 }
}

function isNumeric(v) {
 if (v.match(/^\d+$/) == null) return false;
 return true;
}