Heim >Web-Frontend >js-Tutorial >js 代码集(学习js的朋友可以看下)_javascript技巧

js 代码集(学习js的朋友可以看下)_javascript技巧

WBOY
WBOYOriginal
2016-05-16 18:49:401025Durchsuche

/**
* @author Super Sha
* QQ:770104121
* E-Mail:supei_shafeng@163.com
* publish date: 2009-3-27
* All Rights Reserved
*/

var JsHelper={}; //声明一个JsHelper根命名空间
JsHelper.DOM = {}; //声明JsHelper目录下的DOM命名空间
JsHelper.Event={}; //声明JsHelper目录下的Event事件命名空间
JsHelper.Browser={}; //声明JsHelper目录下的跟浏览器相关的函数Browser命名空间
JsHelper.Ajax={}; //声明Jshelper目录下的跟Ajax相关的函数命名空间
JsHelper.String={}; //声明JsHelper目录下的跟String相关的命名空间

/*
* $() 可以输入多个参数,将返回一个获取对象的数组
*/
var $=function(){ //简化版的$方法
var elements=new Array();
if(arguments.length==0){ //如果参数为空,则返回document元素
return document;
}
for (var i = 0; i {
var element = arguments[i];
if (typeof element == string )
{
element = document.getElementById(element);
}
if (arguments.length == 1)
{
return element;
}
elements.push(element);
}
return elements;
}
JsHelper.DOM.$=function()
{
var elements=new Array();
for (var i = 0; i {
var element = arguments[i];
if (typeof element == string )
{
element = document.getElementById(element);
}
if (arguments.length == 1)
{
return element;
}
elements.push(element);
}
return elements;
}
/*
* $Value() 可以输入多个参数,将返回一个获取对象的Value数组
*/
JsHelper.DOM.value=function()
{
var values=new Array();
for (var i = 0; i {
var element = arguments[i];
if (typeof(element) == string )
{
var v=document.getElementById(element).value;
}
if(arguments.length==1)
{
return v;
}
values.push(v);
}
return values;
}
/*
makeArray对输入的参数生成数组返回,如果参数为空,则返回 "undefined",否则返回数组
*/
JsHelper.String.makeArray=function()
{
var values=new Array();
if(arguments.length>0){
for (var i = 0; i {
var element=arguments[i];
if(typeof element == "string")
{
values.push(element);
}
}
}
else
{
return "undefined";
}
return values;
}
/*
* 声明一个StringBuilder类,处理连接字符串性能的问题
*/
JsHelper.String.StringBulider={
_strs:new Array(),
append: function(str){ //给属性_strs添加字符串
this._strs.push(str);
return this;
},
toString:function(){
if (arguments.length != 0) {
return this._strs.join(arguments[0]); //返回属性_strs结合后的字符串,接受一个可选的参数用于join的参数
}else{
return this._strs.join("");
}
}
};

/*
* $TagName()输入一个参数,将返回一个获取Elements TagNeme对象的数组
*/
JsHelper.DOM.tagName=function()
{
var element=arguments[0];
if(typeof element== string )
{
var tagname=document.getElementsByTagName(element);
}
return tagname;
}

//============================================================
/*
* label:HTML Label ID
* 只能适用与responseText
* 只能适用与GET方式
*/
var _xmlhttp;//声明全局XMLHttpRequest对象实例
function Ajax(method, url, label){
this.method = method;
this.url = url;
try {
_xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
}
catch (e) {
try {
_xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
catch (s) {
_xmlhttp = new XMLHttpRequest();
}
}
Ajax.prototype.ResponseText = function(){
_xmlhttp.onreadystatechange = this.onComplete;
_xmlhttp.open(this.method, this.url, true)
_xmlhttp.send(null);
}
Ajax.prototype.onComplete = function(){
if (_xmlhttp.readyState == 4) {
if (_xmlhttp.status == 200) {
$(label).innerHTML = _xmlhttp.responseText;
}
}
}
this.ResponseText();
}
//================================================

/*
* 判断浏览器类型
*/
var ua = navigator.userAgent.toLowerCase();
if (window.ActiveXObject) {
JsHelper.Browser.IE = ua.match(/msie ([\d.]+)/)[1];
}
else if (document.getBoxObjectFor) {
JsHelper.Browser.Firefox = ua.match(/firefox\/([\d.]+)/)[1];
}
else if (window.MessageEvent && !document.getBoxObjectFor) {
JsHelper.Browser.Chrome = ua.match(/chrome\/([\d.]+)/)[1];
}
else if (window.opera) {
JsHelper.Browser.Opera = ua.match(/opera.([\d.]+)/)[1];
}
else if (window.openDatabase) {
JsHelper.Browser.Safari = ua.match(/version\/([\d.]+)/)[1];
}
/*
* 声明一个XMLHttpRequest对象的实例,返回实例
*/
JsHelper.Ajax.createRequest=function()
{
var xmlhttp=null;
try
{
xmlhttp=new XMLHttpRequest();
}
catch(trymicrosoft){
try {
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
}
catch(othermicrosoft){
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
}
return xmlhttp;
}

/*
* 一个通用的AddEventListener函数,obj为DOM元素
*/
JsHelper.Event.addEventlistener=function(labelID,eventMode,fn)
{
var obj=JsHelper.DOM.$(labelID);
if (typeof window.addEventListener != undefined ) {
obj.addEventListener(eventMode, fn, false);
}
else
if (typeof document.addEventListener != undefined ) {
obj.addEventListener(eventMode, fn, false);
}
else
if (typeof window.attachEvent != undefined ) {
obj.attachEvent("on"+eventMode, fn);
}
else {
return false;
}
return true;
}

/*
*包含了一个Douglas Crockford对函数的method的扩展,下面的三个函数版权归Douglas Crockford所有,特此声明
*/
Function.prototype.method = function (name, func) {
this.prototype[name] = func;
return this;
};
Function.method( inherits , function (parent) {
var d = {}, p = (this.prototype = new parent());
this.method( base , function uber(name) {
if (!(name in d)) {
d[name] = 0;
}
var f, r, t = d[name], v = parent.prototype;
if (t) {
while (t) {
v = v.constructor.prototype;
t -= 1;
}
f = v[name];
} else {
f = p[name];
if (f == this[name]) {
f = v[name];
}
}
d[name] += 1;
r = f.apply(this, Array.prototype.slice.apply(arguments, [1]));
d[name] -= 1;
return r;
});
return this;
});
Function.method( swiss , function (parent) {
for (var i = 1; i var name = arguments[i];
this.prototype[name] = parent.prototype[name];
}
return this;
});

/*
* 解决IE不支持HTMLElement的一个解决方案
*/
var DOMElement ={
extend: function(name,fn)
{
if(!document.all)
{
eval("HTMLElement.prototype." + name + " = fn");
}
else
{
var _createElement = document.createElement;
document.createElement = function(tag)
{
var _elem = _createElement(tag);
eval("_elem." + name + " = fn");
return _elem;
}
var _getElementById = document.getElementById;
document.getElementById = function(id)
{
var _elem = _getElementById(id);
eval("_elem." + name + " = fn");
return _elem;
}
var _getElementsByTagName = document.getElementsByTagName;
document.getElementsByTagName = function(tag)
{
var _arr = _getElementsByTagName(tag);
for(var _elem=0;_elem<_arr.length>eval("_arr[_elem]." + name + " = fn");
return _arr;
}
}
}
};
/*
* 下面仿照jQuery之父John Resig的几个查询DOM的函数,连缀的能力
*/
DOMElement.extend("previous",function(){ // similar to previousSibling DOM Function
var elem=this;
do{
elem=elem.previousSibling;
}while(elem&&elem.nodeType!=1);
return elem;
});

DOMElement.extend("next",function(){ //similar to nextSibling DOm Function
var elem=this;
do{
elem=elem.nextSibling;
}while(elem&&elem.nodeType!=1);
return elem;
});
DOMElement.extend("first",function(num){ //similar to firstChild DOM Function,同parent
var elem=this;
num=num||1;
for (var i = 0; i elem = elem.firstChild;
}
return (elem && elem.nodeType!=1 ? next(elem):elem);
});
DOMElement.extend("last",function(num){ //similar to lastChild DOM Function,同parent
var elem=this;
num=num||1;
for (var i = 0; i elem = elem.lastChild;
}
return (elem && elem.nodeType!=1 ? prev(elem):elem);
});
DOMElement.extend("parent",function(num){ //可以返回几个num等级的parentNode,比如:parent(2)就等同于elem.parent().parent();
var elem=this;
num=num ||1;
for (var i = 0; i if (elem != null) {
elem = elem.parentNode;
}
}
return elem;
});
DOMElement.extend("hasChilds",function(){ //判断时候有子节点
if(this!=null && this.hasChildNodes()){
return true;
}
else{
return false;
}
});

DOMElement.extend("text",function(){ //得到标签内的文本,如果参数不为零,则可以设置标签内的文版,对input标签也同样适合
try{ //解决Firefox不支持InnerText的解决方案
HTMLElement.prototype.__defineGetter__("innerText",function(){
var anyString = "";
var childS = this.childNodes;
for(var i=0; iif (childS[i].nodeType == 1) {
anyString += childS[i].tagName == "BR" ? "n : childS[i].innerText;
}
else if(childS[i].nodeType == 3) {
anyString += childS[i].nodeValue;
}
}
return anyString;
});
}
catch(e){}
if (arguments.length == 1) {
if (this.innerText) {
this.innerText = arguments[0];
}
else {
this.value = arguments[0];
}
}
else {
return this.innerText || this.value;
}
});
DOMElement.extend("html",function(){ //得到元素的innerHTML,如果参数不为零,则可以设置元素内的文本和子节点
if(arguments.length==0){
return this.innerHTML;
}
else if(arguments.length==1)
{
this.innerHTML=arguments[0];
}
});

/*
* 下面是className的操作
*/
DOMElement.extend("getClassName",function(){ //返回元素className
if(this!=null&&this.nodeType==1){
return this.className.replace(/\s+/, ).split( );
}
return null;
});
DOMElement.extend("hasClassName",function(){ //判断是否有class类
if(this!=null&&this.nodeType==1){
var classes=this.getClassName();
for(var i=0;iif(arguments[0]==classes[i]) return true;
}
}else{
return false;
}
});

DOMElement.extend("addClass",function(){ //给元素添加类,可以一次性添加多个类
if(this!=null&&this.nodeType==1){
for (var i = 0; i this.className += (this.className ? : ) + arguments[i];
}
return this;
}
return null;
});
DOMElement.extend("removeClass",function(){ //删除类,如果没有参数,则删除全部的类
if (this != null && this.nodeType == 1) {
if (arguments.length == 0) {
this.className = "";
}
else if(arguments.length!=0) {
var classes=this.getClassName();
for (var i = 0; i for (var j = 0; j if (arguments[i]==classes[j]) {
classes = classes.join(" ").replace(arguments[i], ).split(" ");
}
}
}
this.className=classes.join(" ");
}
return this;
}
return null;
});
JsHelper.__toggleflag=false; //增加一个判断开关
DOMElement.extend("toggleClass",function(classname){ //两次点击调用的函数不同
if(this!=null && this.nodeType==1){
this.onclick=function(){
if(JsHelper.__toggleflag==false){
this.addClass(classname);
JsHelper.__toggleflag = true;
}else if (JsHelper.__toggleflag == true) {
this.removeClass(classname);
JsHelper.__toggleflag = false;
}
}
}
});
/*
* 给每个对象添加click方法,类似与jQuery的click方法的使用方式
*/
DOMElement.extend("click",function(){
if(this!=null && this.nodeType==1){
if(arguments.length==0){
alert("you have done nothing when you clicked.");
}else{
this.onclick=arguments[0];
}
}
});

/*
* 给每个对象扩展hover方法,此方法接受两个函数作为参数
*/
DOMElement.extend("hover",function(){
if(this!=null && this.nodeType==1){
if(arguments.length!=2){
alert("Require two function to be param.");
}else{
this.onmouseover=arguments[0];
this.onmouseout=arguments[1];
}
}
});
/*
* 给每个元素添加事件的函数
*/
DOMElement.extend("addEvent",function(eventtype,fn){
if(document.all){
this.attachEvent("on"+eventtype,fn);
}else{
this.addEventListener(eventtype,fn,false);
}
});
/*
* 给每个元素扩展css方法,接受一个属性和属性值作为参数
*/
DOMElement.extend("css",function(){
if(this!=null && this.nodeType==1){
if(arguments.length!=2){
alert("Require two function to be param.");
}else{
this.style[arguments[0]]=arguments[1]; //设置相关的style属性的值
return this;
}
}
return null;
});
/*
* //查找并返回存在某个类的全部的元素,name为className,type为HTML标签类型
*/
var hasClass = function(name,type){
var r = new Array();
//var re = new RegExp(name,"g");
var e=document.getElementsByTagName(type||"*");
for(var i=0;ivar classes=e[i].getClassName();
for (var j = 0; j if (name== classes[j]) {
r.push(e[i]);
}
}
}
return r;
}
/*
* 返回某个元素的特定的子元素引用的集合,如果没有元素调用该方法,则默认是document
*/
DOMElement.extend("find",function(){
var elem=this||document;
var r=new Array();
if(elem!=null && (elem.nodeType==1||elem.nodeType==9)){
var e=elem.getElementsByTagName(arguments[0]);
for(var i=0;ir.push(e[i]);
}
return r;
}
return null;
});

Stellungnahme:
Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn