原文地址：http://www.cnblogs.com/feiyun126/p/3356365.html
//解决ajax提交前的验证问题，主要用于onclick事件时对某一区域中(可以是form,div,table中的等)控件的验证。
(function ($) {
var v;
//Create a new Validator instance for jQuery
v = $.FdyValidator = new FdyValidator();
//extend all jQuery instance and so that all jQuery instance could execute validator
//
$.fn.extend({
FormValidate: function (handler,custom_msg) {
return v.FormValidate($(this).selector,handler,custom_msg);
},InitValidate: function (handler,custom_msg) {
return v.InitValidate($(this).selector,custom_msg);
}
});
})(jQuery);
//class
function FdyValidator() {
this.version = 1.0;
};
FdyValidator.Tag = { "TagName": "input","AttrName": "validate" };
FdyValidator.prototype.InitValidate = function (form,custom_msg) {
var _form = form;
var _handle = (handler || "follow").split(" "); // should convert to arrary
var _message = custom_msg || FdyValidator.message;
//默认返回true
var ret_val = true;
var fail = 0;
$(_form + " :" + FdyValidator.Tag["TagName"]).each(function () {
// var succ = true;
var attr = $(this).attr(FdyValidator.Tag["AttrName"]);
if (typeof (attr) != "undefined") {
//添加绑定
$(this).blur(function () { FdyValidator.Validator($(this),_handle,_message) });
}
});
};
FdyValidator.Validator = function (item,custom_msg) {
var succ = true;
var _handle = handler; // should convert to arrary
var _message = custom_msg || FdyValidator.message;
var val = item.val(); //取得元素的值
var attr = item.attr(FdyValidator.Tag["AttrName"]);
var func_names = attr.split(" "); //取得要验证的rules
var msg; //save message if error occured
for (var i in func_names) {
//遍历rules
var msg_index = ["program"]; //默认一个数组存放错误索引
succ = false;
if (func_names[i] in FdyValidator.rules) {
msg_index = [func_names[i]];
//验证表达式是否正确
if (FdyValidator.rules[func_names[i]].validate(item,val,msg_index))
succ = true;
}
if (!succ) {
//验证不通过
if (msg_index[0] in _message)
msg = _message[msg_index[0]];
else
msg = _message["unknown"];
for (var j in _handle) {
if (_handle[j] in FdyValidator.ErrorHandle) {
FdyValidator.ErrorHandle[_handle[j]](item,succ,msg);
}
}
break;
}
else {
FdyValidator.ErrorHandle["remove"](item);
}
}
}
FdyValidator.prototype.FormValidate = function (form,custom_msg) {
var _form = form;
var _handle = (handler || "follow").split(" "); // should convert to arrary
var _message = custom_msg || FdyValidator.message;
//默认返回true
var ret_val = true;
var fail = 0;
$(_form + " :" + FdyValidator.Tag["TagName"]).each(function () {
var succ = true;
var attr = $(this).attr(FdyValidator.Tag["AttrName"]);
if (typeof (attr) != "undefined") {
var val = $(this).val(); //取得元素的值
var func_names = attr.split(" "); //取得要验证的rules
var msg; //save message if error occured
for (var i in func_names) {
//遍历rules
var msg_index = ["program"]; //默认一个数组存放错误索引
succ = false;
if (func_names[i] in FdyValidator.rules) {
msg_index = [func_names[i]];
//验证表达式是否正确
if (FdyValidator.rules[func_names[i]].validate($(this),msg_index))
succ = true;
}
if (!succ) {
//验证不通过
fail = parseInt(fail) + 1;
if (msg_index[0] in _message)
msg = _message[msg_index[0]];
else
msg = _message["unknown"];
for (var j in _handle) {
if (_handle[j] in FdyValidator.ErrorHandle) {
FdyValidator.ErrorHandle[_handle[j]]($(this),msg);
}
}
break;
}
else {
FdyValidator.ErrorHandle["remove"]($(this));
}
}
ret_val = ret_val && succ;
}
});
return fail == 0;
};
FdyValidator.InnerValidate = function (str,rule) {
if (str == "")
return true;
var re = new RegExp(rule);
return (re.test(str));
};
FdyValidator.rules = {
"required": { //must be filled
reg: /^[ ]+$/,validate: function (element,str) { if (str == "") return false; return (!FdyValidator.InnerValidate(str,this.reg)); }
},"email": { // email
reg: /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/,str) { return (FdyValidator.InnerValidate(str,this.reg)); }
//validate=FdyValidator.InnerValidate
},"cardno": { // cardno for campus card
reg: /^\d+$/,"cardpwd": { // password for campus card
reg: /^\d{6}$/,"cname": { // chinese name
reg: /[\u4e00-\u9fa5]/,"integer": { // integer,max & min is optional
reg: /^[0-9]*[1-9][0-9]*$/,str,msg_index) {
var ret_val;
var msg = msg_index[0] || "integer";
ret_val = FdyValidator.InnerValidate(str,this.reg);
var value = parseInt(str || 0);
var min_val = 0,max_val = 0;
if (typeof (element.attr("min")) != "undefined") {
min_val = parseInt(element.attr("min"));
msg_index.push(min_val.toString());
if (value < min_val)
ret_val = false;
msg = msg + "_min";
}
if (typeof (element.attr("max")) != "undefined") {
max_val = parseInt(element.attr("max"));
msg_index.push(max_val.toString());
if (value > max_val)
ret_val = false;
msg = msg + "_max";
}
msg_index[0] = msg;
return ret_val;
}
},"ip": { //ip address
reg: /^(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])$/,"username": { // user name
reg: /^[a-z]\w{2,18}$/,this.reg)); }
}
};
FdyValidator.message = {
"required": "此项为必填项，不能为空！","email": "非法的EMail地址，请重新输入！","cardno": "不正确的校园卡号，请重新输入！","cardpwd": "不正确的校园卡密码，请重新输入！","cname": "错误的中文名！","integer": "请输入整数！","integer_min": "请输入大于[ {0} ]的整数！","integer_max": "请输入小于[ {0} ]的整数！","integer_min_max": "请输入[ {0} - {1} ]之间的整数！","ip": "请输入正确的IP地址","username": "请输入以字母开头，后续可以包括下划线、字母、数字的最少三位，最长19用户名，","program": "程序错误(非法的验证属性)，请检查！","unknown": "未定义错误！","success": "验证通过！"
};
FdyValidator.ErrorHandle = {
"follow": function (item,msg) {
if (item.next("label").length > 0) {
item.next("label").remove(); //remove prompt if existed
}
if (!succ)
$("<label class='error'></label>").attr("for",item.attr("id")).text(msg).insertAfter(item);
item.attr("class",item.attr("class") + " error");
},"remove": function (item)
{
if (item.next("label").length > 0) {
item.next("label").remove(); //remove prompt if existed
item.attr("class",FdyValidator.StrHandle["removeCss"](item.context.className));
}
}
};
FdyValidator.StrHandle = {
"removeCss": function (css) {
var new_css = "";
var strs = new Array();
strs = css.split(" ");
for (i = 0; i < strs.length ; i++)
{
if (strs[i] != "error") {
new_css += strs[i] + " ";
}
}
return new_css;
}
};
input.error { border: 1px dotted red; }
label.error { color: red; }
使用方法：
<input id="email" type="text" name="email" validate="required email"/></td>
在jquery.form.js
ajaxSubmit()提交前的验证
var t = $("#form1").FormValidate();
t = false不继续
只要onclick事件
页面初始化时的验证
$(document).ready(function () {
$("#form1").InitValidate();
});
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