JS验证控件1.2 新增提示框
[javascript]
// JavaScript Document
if (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;
};
[javascript]
//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：
[javascript]
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();
}
