$.validator.addMethod("isPhone", function(value,element) { var length = value.length; var mobile = /^1[3456789]\d{9}$/; return this.optional(element) || (length == 11 && mobile.test(value)); }, "請正確填寫您的聯系電話");
菜鳥教程:https://www.runoob.com/jquery/jquery-plugin-validate.html
調用: isPhone:true