javascript验证手机号正则表达式

 1 <script type="text/javascript">
 2 function Check() {
 3         var phoneNumber = $.trim($("#PhoneNumber").val());
 4         var isMobile=/^1?(3|5|7|8)\d{9}$/;
 5         if (isMobile.test(phoneNumber) == false) {
 6             alert("电话号码格式错误");
 7             $("#PhoneNumber").focus();
 8             return false;
 9         }
10         return true;
11     }
12 </script>
13 <input type="submit" name="addNewAddress" value="保存收货地址" class="saveNewAddress" onclick="return Check();"/>