JS验证控件1.2 新增提示框

// JavaScript Documentif (typeof (HTMLElement) != "undefined") {    HTMLElement.prototype.insertAdjacentElement = function(where, parsedNode) {        switch (where) {            case "beforeBegin":                this.parentNode.insertBefore(parsedNode, this);                break;            case "afterBegin":                this.insertBefore(parsedNode, this.firstChild);                break;            case "beforeEnd":                this.appendChild(parsedNode);                break;            case "afterEnd":                if (this.nextSibling)                    this.parentNode.insertBefore(parsedNode, this.nextSibling);                else                    this.parentNode.appendChild(parsedNode);                break;        }    }    HTMLElement.prototype.insertAdjacentHTML = function(where, htmlStr) {        var r = this.ownerDocument.createRange();        r.setStartBefore(this);        var parsedHTML = r.createContextualFragment(htmlStr);        this.insertAdjacentElement(where, parsedHTML);    }    HTMLElement.prototype.insertAdjacentText = function(where, txtStr) {        var parsedText = document.createTextNode(txtStr);        this.insertAdjacentElement(where, parsedText);    }}function addEvent(element, type, handler) {    //为每一个事件处理函数分派一个唯一的ID    if (!handler.$$guid) handler.$$guid = addEvent.guid++;    //为元素的事件类型创建一个哈希表    if (!element.events) element.events = {};    //为每一个"元素/事件"对创建一个事件处理程序的哈希表    var handlers = element.events[type];    if (!handlers) {        handlers = element.events[type] = {};        //存储存在的事件处理函数(如果有)        if (element["on" + type]) {            handlers[0] = element["on" + type];        }    }    //将事件处理函数存入哈希表    handlers[handler.$$guid] = handler;    //指派一个全局的事件处理函数来做所有的工作    element["on" + type] = handleEvent;};//用来创建唯一的ID的计数器addEvent.guid = 1;function removeEvent(element, type, handler) {    //从哈希表中删除事件处理函数 www.2cto.com    if (element.events && element.events[type]) {        delete element.events[type][handler.$$guid];    }};function handleEvent(event) {    var returnValue = true;    //抓获事件对象(IE使用全局事件对象)    event = event || fixEvent(window.event);    //取得事件处理函数的哈希表的引用    var handlers = this.events[event.type];    //执行每一个处理函数    for (var i in handlers) {        this.$$handleEvent = handlers[i];        if (this.$$handleEvent(event) === false) {            returnValue = false;        }    }    return returnValue;};//为IE的事件对象添加一些“缺失的”函数function fixEvent(event) {    //添加标准的W3C方法    event.preventDefault = fixEvent.preventDefault;    event.stopPropagation = fixEvent.stopPropagation;    return event;};fixEvent.preventDefault = function() {    this.returnValue = false;};fixEvent.stopPropagation = function() {    this.cancelBubble = true;};

 

//验证控件var Validator = function(formid) {    var $$ = function(id) {        return document.getElementById(id);    }    this.IsValidator = false;    var base = this;    var form = $$(formid);    var validArr = new Array();    var validObjTag = "v_";    //绑定验证控件的Class属性       var spans = document.getElementsByTagName("span");    for (var i = 0; i < spans.length; i++) {        if (spans[i].id.indexOf(validObjTag) != -1)            spans[i].className = "validator";    }    //绑定提交事件    addEvent(form, "submit", function() {        base.IsValidator = base.valid(true);        return base.IsValidator;    });    //验证控件对应的ID       function validObjID(id) {        return validObjTag + id;    }    //验证控件左边的对象内容    function validName(id) {        var txt = $($$(id).parentNode).prev();        try {            var result = txt[0].innerHTML.replace('：', '');            result = urlHelp.MyReplace(result, ' ', '');            result = urlHelp.MyReplace(result, '\n', '');            return result;        } catch (e) {            return null; //txt.parentNode.previousSibling.innerHTML.replace('：', '');        }    }    //绑定验证事件    this.bind = function(id, eventArr, afterFun) {        if ($$(id)) {            if (!$$(validObjID(id))) {                var valid = validObjID(id);                var span = document.createElement("span");                span.setAttribute("id", valid);                span.setAttribute("class", "validator");                $$(id).insertAdjacentElement("afterEnd", span);                //alert("验证控件（id=" + validObjID(id) + "）不存在！");               }            var count;            validArr.push(new Array(id, eventArr, afterFun));            addEvent($$(id), "blur", function() {                var result = true;                for (var i = 0; i < eventArr.length; i++) {                    result = base.doValid(id, eventArr[i][0], eventArr[i][1], eventArr[i][2]);                    if (!result) {                        break;                    }                }                if (afterFun != null && afterFun != undefined && result) {                    afterFun($$(id), $$(validObjID(id)));                }            });        }    }    //所有对象的验证事件       this.valid = function(showAlert) {        var pass = true;        for (var i = 0; i < validArr.length; i++) {            var result = false;            for (var j = 0; j < validArr[i][1].length; j++) {                result = base.doValid(validArr[i][0], validArr[i][1][j][0], validArr[i][1][j][1], validArr[i][1][j][2]);                if (!result) {                    pass = false;                    //显示验证提示                    if (showAlert == true) {                        var msg = validArr[i][1][j][1];                        if (msg == "*") {                            msg = "不得为空";                        }                        var show = validName(validArr[i][0]);                        if (show != null) {                            $$(validArr[i][0]).focus();                            alert("【" + show + "】" + msg);                            return pass;                        }                    }                    break;                }            }            var afterFun = validArr[i][2];            if (afterFun != null && afterFun != undefined && result) {                afterFun($$(validArr[i][0]), $$(validObjID(validArr[i][0])));            }        }        return pass;    }    //一个对象的验证事件    this.doValid = function(id, type, msg, reg) {        if (msg == "*")            msg = "*必填";        switch (type) {            case "empty": //为空                return writeMsg(id, msg, ($$(id).value == ""));                break;            case "regular": //正则验证                   return writeMsg(id, msg, ($$(id).value != "" && !reg.test($$(id).value)));                break;            case "contrast": //比较                return writeMsg(id, msg, ($$(id).value != $$(reg).value));                break;            //在此添加别的判断事件                                                                            }    }    //写出错误信息    function writeMsg(id, msg, result) {        $$(validObjID(id)).style.color = 'red';        if (result) {            $$(validObjID(id)).innerHTML = msg;            return false;        } else {            //$$(validObjID(id)).style.color = 'green';            $$(validObjID(id)).innerHTML = '';            return true;        }    }}

例子：

function afterFun(txtbox, msg) {             return true;//txtbox验证通过后处理事件          }         window.onload = function() {             var vld = new Validator("form1");             vld.bind("txt_pwd", [["empty", "*"], ["regular", "超过最大长度10", /^.{0,10}$/], ["contrast", "不相同", "txt_pwd2"]], afterFun);             vld.valid();         }  

本次更新， 新增提示框，需要引用JQ。