当前位置: 首页 > 图文教程 > 网络编程 > Javascript > js几个不错的函数 $$()

Javascript
javascript 面向对象的经典实例代码
javascript prototype原型操作笔记
JavaScript 常见对象类创建代码与优缺点分析
javascript 混合的构造函数和原型方式,动态原型方式
测试JavaScript字符串处理性能的代码
JQuery 表单中textarea字数限制实现代码
jQuery Selectors(选择器)的使用(六、属性篇)
IE浏览器打印的页眉页脚设置解决方法
javascript检测(控制 )上传文件大小
jquery 双色表格实现代码
JavaScript Cookie的读取和写入函数
JavaScript 利用Cookie记录用户登录信息
JavaScript Cookie显示用户上次访问的时间和次数
JavaScript Cookie 直接浏览网站分网址
javascript OFFICE控件测试代码
javascript setTimeout和setInterval 的区别
javascript弹出窗口 window.open使用方法以及参数说明分析篇
可以用来搜索当前页面内容的js代码
动态调整textarea中字体的大小代码
为指定元素增加样式的js代码

Javascript 中的 js几个不错的函数 $$()


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-10-12   浏览: 176 ::
收藏到网摘: n/a

复制代码 代码如下:

function map(a,f){f(a);}
function getRand(a,b)
{
if(a)
{
b=b?b:0;
return Math.floor(Math.random()*a+b);
}else
{
a = new Date();
return d.getTime();
}
}
function $(a){document.write(a);}
function $$()
{
var elements = new Array();
for (var i = 0; i < arguments.length; i++)
{
var element = arguments[i];
if (typeof element == 'string')
element = document.getElementById(element);
if (arguments.length == 1)
return element;
elements.push(element);
}
return elements;
}
function fGetCookie(name)
{
var cookieValue = "";
var search = name + "=";
if(document.cookie.length > 0)
{
offset = document.cookie.indexOf(search);
if (offset != -1)
{
offset += search.length;
end = document.cookie.indexOf(";", offset);
if (end == -1) end = document.cookie.length;
cookieValue = unescape(document.cookie.substring(offset, end));
}
}
return cookieValue;
}
function J_get(name)
{
var js_get =self.window.document.location.href;
var start =js_get.indexOf(name + '=');
if (start == -1) return '';
var len = start + name.length + 1;
var end = js_get.indexOf('&',len);
if (end == -1) end = js_get.length;
return unescape(js_get.substring(len,end));
}
function writeCookie(name, value, hours)
{
var expire = "";
var domain = "; domain=ruanchen.com; path=/";
if(hours != "")
{
expire = new Date((new Date()).getTime() + hours * 60 * 60 * 1000);
expire = "; expires=" + expire.toGMTString();
}
document.cookie = name + "=" + escape(value) + domain;
}
function createXMLHttp()
{
var ret = null;
try {
ret = new ActiveXObject('Msxml2.XMLHTTP');
}
catch (e) {
try {
ret = new ActiveXObject('Microsoft.XMLHTTP');
}
catch (ee) {
ret = null;
}
}
if (!ret && typeof XMLHttpRequest != 'undefined')
ret = new XMLHttpRequest();
return ret;
}
function loadXmlToElement(fragment_url, element_id,mode,de)
{
var element = $$(element_id);
var xmlhttp = createXMLHttp();
var str;
xmlhttp.open("GET", fragment_url);
xmlhttp.onreadystatechange = function()
{
if (xmlhttp.readyState == 4 && xmlhttp.status == 200)
{
if(!mode)
{
str = xmlhttp.responseXML.getElementsByTagName("data")[0].childNodes[0].nodeValue;
if(!element.innerHTML)
{
try{
str = xmlhttp.responseXML.firstChild.childNodes[1].nodeValue;
}catch(e){}
}
}else if(mode == 'txt')
{
str = xmlhttp.responseText;
}
if(de) str = unescape(str);
element.innerHTML = str;
}
}
xmlhttp.send(null);
}
var oJson = new Object();
var fJson =
{
"data":{},//[0,y,yes,空值]:默认,[-1,n,no]:不运行flush(),
"file":{},//附加js代码文件
"str":{},//附加JS代码
"set":function(element,vars)
{
for(key in vars)
{
this[key][element] = vars[key];
}
},
"getSrc":function(element)
{
var rs = '';
if(this['data'][element])
{
if(this['data'][element] == 'n' || this['data'][element] == '-1' || this['data'][element] == 'no')
{
rs +='&gJsonData=n';
}
}
if(this['str'][element])
{
rs +='&gJsonDoStr='+escape(this['str'][element]);
}
if(this['file'][element])
{
rs +='&gJsonDoFile='+escape(this['file'][element]);
}
return rs;
},
"main":function(url,element,un)
{
un = un?un:0;
eval("oJson."+element+" = new fJson.__Json('"+url+"','"+element+"','"+un+"')" );
},
"__Json":function(url,element,un)
{
var a = document.getElementById("script_"+element)
if(!a)
{
a = document.createElement("script");
a.setAttribute("id","script_"+element);
}
a.un = un;
a.data = '';
a.src = url+((url.indexOf('?') == -1 )?'?':'&')+'gJson='+element+fJson.getSrc(element);
if(navigator.appVersion.indexOf("MSIE") == -1 )
{
document.getElementById(element).insertBefore(a,null);
}else
{
document.body.insertAdjacentElement("BeforeBegin",a);
}
return a;
},
"flush":function(element)
{
document.getElementById(element).innerHTML = (oJson[element].un)?unescape(oJson[element].data):oJson[element].data;
//oJson[element] = null;
}
}
/* 应用 */
function subPageSelect(b,e,d,a)//b开始 e结束 d默认 a动作
{
var shtml ='<select '+a+'>';
for(var i=b;i<=e;i++)
{
shtml+='<option value="'+i+'" '+(i==d?shtml+='selected':'')+'>'+i+'</option>';
}
shtml+='</select>';
return shtml;
}
function err(a,b,c)
{
if(b)
{
if(c)
{
a.src='http://www.ruanchen.com/';
}else
{
a.src='http://v.ruanchen.com:88/img/user_no_photo.gif';
}
}else
{
a.src='http://v.ruanchen.com:88/img/flv_no_photo.gif';
}
}
function img_onerr(a)
{
err(a);
}
function gowin(a)
{
document.location = a;
}
function CopyInBoard(hahaUrl,note)
{
note = note?note:'网址复制成功啦!';
window.clipboardData.setData('text',hahaUrl)
alert(note);
}
function fDoMask(a,f,s,c,p,color)//a元素 f刷新调函数 s样式 c内容 p透明度
{
a = $$(a);
p = p?p:75;
s = '<div style="'+(s?s:'text-align:center; margin-top:40px;')+'">'+(c?c:'<img src="http://www.ruanchen.com/" border="0"/> 数据加载中... ')+(f?'[<a href="javascript:'+f+'">刷新</a>]':'')+'</div>';
color = color?color:'#FFFFFF';
if (a.innerHTML != "")
{
//window.onunload = fCheckStatus;
var objBrother = a.childNodes[0];
var b = document.createElement('DIV');
b.setAttribute('id','maskdiv');
b.style.textAlign = "center";
b.style.position = "absolute";
b.style.filter = "alpha(opacity="+p+")";
b.style.opacity = (p / 100);
b.style.MozOpacity = (p / 100);
b.style.KhtmlOpacity = (p / 100);
b.style.width = a['offsetWidth']+'px';
b.style.height = a['offsetHeight']+'px';
b.style.margin = "0px";
b.style.backgroundColor = color;
a.insertBefore(b,objBrother)
b.innerHTML = s;
}
}
function switchDisplay(obj1, obj2)
{
try
{
obj1 = $$(obj1);
obj2 = $$(obj2);
if(obj1.style.display=='')
{
obj1.style.display='none';
obj2.style.display='';
}
else
{
obj1.style.display='';
obj2.style.display='none';
}
}catch (ex)
{
}
}
function getFlashPlayer(vars,playUrl,id,w,h)
{
playUrl = playUrl?playUrl:'http://www.ruanchen.com/';
id = id?id:'siteFlvPlayer';
w = w?w:'440';
h = h?h:'371';
AC_FL_RunContent( 'codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0','width',w,'height',h,'id',id,'src',playUrl,'flashvars',vars,'quality','high','scale','noscale','wmode','transparent','name',id,'salign','lt','pluginspage','http://www.macromedia.com/go/getflashplayer','movie',playUrl); //end AC code
}
function f_js_playObject(a,h,s,player)
{
h = 'www.ruanchen.com';//#..
player = player?player:'/flashApp/v_player_site_fp7_5.swf';
player = 'http://'+h+player;
s = s?s:' width="100%" height="100%" ';
var _into = "";
_into += '<div id="videoPlayer">';
_into += '<div id="PlayerInfo" style="color:#ffffff;font-weight:bold;text-align:center;display:none;">双击播放器屏幕或者点“全屏”可取消或恢复全屏</div>';
_into += '<div id="flvPlayBack" class="normalSize">';
_into += '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" '+s+'>';
_into += '<param name="allowScriptAccess" value="always" />';
_into += '<param name="movie" value="'+player+'" />';
_into += '<param name="quality" value="high" />';
_into += '<param name="bgcolor" value="#ffffff" />';
_into += '<param name="FlashVars" value="&'+a+'" />';
_into += '<embed src="'+player+'" flashvars="&'+a+'" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" align="middle" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" '+s+'>';
_into += '</embed>';
_into += '</object>' ;
_into += '</div></div>';
_into += '<div id="maskForIe" style="lexrus:expression(this.style.width=document.body.parentNode.scrollWidth);aether:expression(this.style.height=document.body.parentNode.scrollHeight);display:none;background:#000;filter:alpha(opacity=70);position:absolute !important;left:0;top:0;width:100% !important;"></div>';
_into += '<style>#videoPlayer{margin:0;padding:0 !important;width:440px;height:371px;}#program_player td{padding:0 !important;}';
_into += '.maxmized{z-index:9999;margin:0;padding:0;position:absolute;left:0;top:0;width:100% !important;height:100% !important;filter:alpha(opacity=70);}';
_into += '.maxmized #flvPlayBack{width:580px !important;height:490px !important;}';
_into += '.maxmized #PlayerInfo{width:580px !important;}';
_into += '.normalSize{width:440px;height:371px;}#flvPlayBack{margin:auto;height:100%;}#PlayerInfo{width:440px;}</style>';
_into += '<div style="text-align:center;margin-top:7px;margin-bottom:-8px;color:gray;" id="playerInfo1">如果不能正常播放,请点此<a href="javascript:void(0);" onClick="switchDisplay(\'playerInfo1\', \'playerInfo2\');">查看详情</a></div>';
_into += '<div style="background:#fffbee;border:2px solid #EDBB17;margin-right:4px;margin-top:7px;margin-bottom:-8px;padding:12px;display:none" id="playerInfo2">因以下情况,导致视频无法正常播放,请下载Flash8.0播放器。<a href="http://v.ruanchen.com/">点此下载</a><br>1.如果打开页面只有声音没有视频画面<br>2.播放器无法加载,出现“红X”<br>3.播放器可以加载,但提示版本过低!<br><br>非上述情况下出现无法播放时,请给我们反映!<a href="http://bbs.ruanchen.com/" target="_blank">点此报告</a><br><br>[<a href="javascript:void(0);" onClick="switchDisplay(\'playerInfo1\', \'playerInfo2\');">关闭详情</a>]</div>';
document.getElementById('js_playObject').innerHTML = _into;
FcheckZoom();
}
function zoomMovie(){
var objId='videoPlayer';
var videoObject=document.all?document.all[objId]:document.getElementById(objId);
var maskForIe=document.all?document.all['maskForIe']:document.getElementById('maskForIe');
var videoPlayBack=document.all?document.all['flvPlayBack']:document.getElementById('flvPlayBack');
var playerInfo=document.all?document.all['PlayerInfo']:document.getElementById('PlayerInfo');
var searchBox=document.all?document.all['nav_search_form']:document.getElementById('nav_search_form');
var isMaxmized=/.*maxmized.*/i.test(videoObject.className);
if(isMaxmized){
videoObject.className='normalSize';
videoObject.style.position='';
videoPlayBack.firstChild.BGCOLOR='ffffff';
playerInfo.style.display='none';
maskForIe.style.display='none';
searchBox.style.display='';
}else{
window.scrollTo(0,0);
videoObject.className='maxmized';
videoObject.style.position='absolute';
if(navigator.appName.lastIndexOf('Explorer')!=-1){
videoObject.style.left=(document.body.parentNode.scrollWidth-600)/2;
videoObject.style.top='30';
playerInfo.style.display='';
maskForIe.style.display='';
}
videoPlayBack.firstChild.BGCOLOR='000000';
}
videoObject.onclick=function(){zoomMovie()}
}
function FcheckZoom()
{
var a = J_get('fs');
if (a==1)
{
zoomMovie();
}
}
/* 菜单 */
var isOverMainMenu = false;
var isOverSortMenu = false;
function showMenu(id){
var a = document.getElementById("MainMenu").getElementsByTagName("a");
for(var i=0;i<a.length;i++){
a[i].onmouseover = function() {
if(this.className!="active") this.className = "hover";
showSortMenu(this.id);
isOverMainMenu=true;
}
a[i].onmouseout = function() {
if(this.className!="active") this.className = "";
setTimeout("showSortMenu('"+id+"')", 400);
isOverMainMenu=false;
}
if(a[i].id == id) {
a[i].className = "active";
showSortMenu(id);
} else {
a[i].className = "";
}
}
}
function showSortMenu(id){
var a = document.getElementById("SortMenu");
a.onmouseover = function(){
isOverSortMenu=true;
}
a.onmouseout = function(){
isOverSortMenu=false;
}
if(!isOverSortMenu && !isOverMainMenu) {
var b = document.getElementById("SortMenu").getElementsByTagName("ul");
for(var i=0;i<b.length;i++){
if(b[i].id == "SortMenu_"+id) {
b[i].className = "active";
} else {
b[i].className = "";
}
}
}
}
/*******************************/
var gLoginId = fGetCookie("member_id"); //登录用户ID
var gLoginHost = fGetCookie("host"); //登录主机名
var gLoginPass = fGetCookie("pass_hex"); //pass
var gLoginMember = fGetCookie("member_login"); //member_login
var gNewMail = fGetCookie("newmail"); //新邮件
var gKeepMail = fGetCookie("keepmail"); //是否检查邮件的标示
var gLoginUser = gLoginId.substring(0,gLoginId.indexOf("@")); //登录用户名
var gIsLogin = (gLoginHost != "" && gLoginUser != "" && gLoginPass !="" && gLoginMember != "")?true:false; //是否已经登录
var basedir = 'http://v.ruanchen.com:88/photo/';
var userDir = fCaculateUrl(gLoginUser);
function fIsLogin()
{
return (fGetCookie("host") != "" && fGetCookie("member_id") != "" && fGetCookie("pass_hex") !="" && fGetCookie("member_login") != "")?true:false;
}
function fCaculateUrl(userName)
{
var level1 = 0;
var level2 = 0;
var k = userName.length;
//var arr = new Array();
for(var i=0;i<k;i++)
{
level1 += userName.charCodeAt(i)*i;
level2 += userName.charCodeAt(i)*(2*i+1);
}
level1 = level1 % 100;
level2 = level2 % 100;
return level1+'/'+level2;
}
document.domain = "ruanchen.com";
window.focus();