elem = document.getElementsByTagName("div");
elem = $(elem);

var elem = $("<p>hello</p>");

var elem = $("div");

var elem = $("body > div");

var jQuery = function( selector, context ) {
                // 创建一个自定义对象，并返回
		return new jQuery.fn.init( selector, context );
	}

jQuery.fn = jQuery.prototype = {
	init: function( selector, context ) {
		var match, elem, ret, doc;
 
		// 如果选择器为空、null、undefined的时候，返回 jQuery对象
		if ( !selector ) {
			return this;
		}
 
		// Handle $(DOMElement)
		if ( selector.nodeType ) {
			// 如果选择器为DOM对象，写入jQuery属性并返回jQuery对象
			this.context = this[0] = selector;
			this.length = 1;
			return this;
		}
 
		// The body element only exists once, optimize finding it
		if ( selector === "body" && !context ) {
			//code here...
			return this;
		}
 
		// Handle HTML strings
		if ( typeof selector === "string" ) {
		// 通过正则判断传入的选择器是HTML字符串还是ID
			// Are we dealing with HTML string or an ID?
			// quickExpr = /^[^< ]*(<[\w\W]+>)[^>]*$|^#([\w-]+)$/,
 
			match = quickExpr.exec( selector );
 
			// 如果match[1]不为空或者context为空的时候
			if ( match && (match[1] || !context) ) {
 
				// HANDLE: $(html) -> $(array)
				// 如果match[1] 不为空（html字符串）
				if ( match[1] ) {
					// 返回jQuery、选择器两数组合并后的对象
					return jQuery.merge( this, selector );
 
				// HANDLE: $("#id")
				// 如果context为空的时候 （id）
				} else {
					// 尝试按照DOM节点的方式返回jQuery对象
					elem = document.getElementById( match[2] );
 
					if ( elem ) {
						// 如果得到elem对象，但id非match[2]
						if ( elem.id !== match[2] ) {
							return rootjQuery.find( selector );
						}
 
						// Otherwise, we inject the element directly into the jQuery object
						this.length = 1;
						this[0] = elem;
					}
 
					this.context = document;
					this.selector = selector;
					return this;
				}
 
 
			// HANDLE: $("TAG")
			// 如果context为空并且是一个纯字母的字符串
			} else if ( !context && /^\w+$/.test( selector ) ) {
				// 返回jQuery、选择器两数组合并后的对象
				return jQuery.merge( this, selector );
 
			// HANDLE: $(expr, $(...))
			// 如果context为空 或者 context是一个jQuery对象
			} else if ( !context || context.jquery ) {
				// 在上下文或者document对象中找到节点并返回jQuery对象
				return (context || rootjQuery).find( selector );
 
			// HANDLE: $(expr, context)
			// (which is just equivalent to: $(context).find(expr)
			} else {
				return jQuery( context ).find( selector );
			}
 
		// HANDLE: $(function)
		// Shortcut for document ready
		// 对$(document).ready(functon(){});的一个缩写$(function(){});
		} else if ( jQuery.isFunction( selector ) ) {
			return rootjQuery.ready( selector );
		}
 
		// 如果选择器是一个jQuery对象，引用下
		if (selector.selector !== undefined) {
			this.selector = selector.selector;
			this.context = selector.context;
		}
 
		return jQuery.makeArray( selector, this );
 
	}
}

jQuery.fn.init.prototype = jQuery.fn;

jQuery("#kw").suggest({
	url:siteConfig.suggestionUrl,
	params:{
		kw:function(){return jQuery("#kw").val()},
		n:10
	}
});

/*
* LOADScript Mod
* Params url1,url2,url3,url4,fn
*/
jQuery.extend({
	loadMod: function(){
		var argleng = arguments.length,
				arglast = arguments[argleng-1],
				fn = false,
				queue = [],
				checknum = 0,
				timer = null
		;
		// init
		if(jQuery.isFunction(arglast)){argleng = argleng -1;fn=arglast;}
		for (var i=0;i<argleng ;i++){
			queue.push(arguments[i]);
		}
 
		// getscript
		jQuery.each(queue,function(i,o){
			jQuery.getScript(o);
		});
 
		// check load ready?
		loadReady();
 
		function loadReady(){
			if(jQuery.tools != undefined){
				checknum = 0;
				$.each(jQuery.tools,function(i,n){
					if(jQuery.isPlainObject(n)){checknum++;}
				});
			}
			if(checknum != argleng){
					clearTimeout(timer);
					timer = setTimeout(loadReady, 100);
			}else{
					if(!!fn){fn.call(document.jQuery)}
			}
 
		}
	}
});
 
// 使用方法
$.loadMod('a.js','b.js','c.js',function(){
  alert('success!');
});

//一段随机数，模拟用
var baseNum=[];
for(var i= 0;i< 100000 ;i++){
 random = Math.floor(Math.random()*i);
 baseNum.push(random);
}
var baseNumLen = baseNum.length;
var numSubscript = [];
//将数字作为下标和值放到另一数组内，实现排序和不重复
for (var i =0;i<basenumlen ;i++){
 if(numSubscript[baseNum[i]] == undefined)numSubscript[baseNum[i]]=baseNum[i];
}
//去除空的值并颠倒一下
baseNum = numSubscript.join(',').replace(/([,]+)/ig, ',').split(',').reverse();
document.write(baseNum);

var baseNum=[],tmp={},v;
for(var i= 0;i< 100000 ;i++){
        tmp[Math.floor(Math.random()*i)]=true;
};
i=0;
for (var k in tmp){
        baseNum[i++]=k;
};
baseNum.sort(fn);
function fn(x,y) {
        return x-y&gt;0?1:-1
}
document.write(baseNum.join(''));

var now = new Date();
 
now.format("m/dd/yy");
// Returns, e.g., 6/09/07
 
// Can also be used as a standalone function
dateFormat(now, "dddd, mmmm dS, yyyy, h:MM:ss TT");
// Saturday, June 9th, 2007, 5:46:21 PM
 
// You can use one of several named masks
now.format("isoDateTime");
// 2007-06-09T17:46:21
 
// ...Or add your own
dateFormat.masks.hammerTime = 'HH:MM! "Can\'t touch this!"';
now.format("hammerTime");
// 17:46! Can't touch this!
 
// When using the standalone dateFormat function,
// you can also provide the date as a string
dateFormat("Jun 9 2007", "fullDate");
// Saturday, June 9, 2007
 
// Note that if you don't include the mask argument,
// dateFormat.masks.default is used
now.format();
// Sat Jun 09 2007 17:46:21
 
// And if you don't include the date argument,
// the current date and time is used
dateFormat();
// Sat Jun 09 2007 17:46:22
 
// You can also skip the date argument (as long as your mask doesn't
// contain any numbers), in which case the current date/time is used
dateFormat("longTime");
// 5:46:22 PM EST
 
// And finally, you can convert local time to UTC time. Either pass in
// true as an additional argument (no argument skipping allowed in this case):
dateFormat(now, "longTime", true);
now.format("longTime", true);
// Both lines return, e.g., 10:46:21 PM UTC
 
// ...Or add the prefix "UTC:" to your mask.
now.format("UTC:h:MM:ss TT Z");
// 10:46:21 PM UTC

var language = navigator.language||navigator.browserLanguage;
if (language.toLowerCase() === 'zh-cn'){
	//code here
}else{
	//other code
}

<ul id="demo">
    <li>a</li>
    <li>b</li>
    <li>c</li>
</ul>

var ul = document.getElementById('demo');
var liList = ul.getElementsByTagName('li');
for (var i = 0; i < = liList.length; i++) {
    ul.removeChild(liList[i]);
}

var ul = document.getElementById('demo');
var liList = ul.getElementsByTagName('li');
var lilength =  liList.length;
for (var i = 0; i < lilength; i++) {
    ul.removeChild(liList[0]);
}

var loadscript =
{
	$$:function(id){return document.getElementById(id)},
	tag:function(element){return document.getElementsByTagName(element)},
	ce:function(element){return document.createElement(element)},
	js:function(url)
	{
		s = loadscript.ce('script');
		s.type = "text/javascript";
		s.onreadystatechange = ready;
		s.onerror = s.onload = complete;
		s.src = url;
		loadscript.tag('head')[0].appendChild(s);
		function ready(){}
		function complete(){}
	}
}

var loadscript =
{
	$$:function(id){return document.getElementById(id)},
	tag:function(element){return document.getElementsByTagName(element)},
	ce:function(element){return document.createElement(element)},
	js:function(url,callback)
	{
		s = loadscript.ce('script');
		s.type = "text/javascript";
		s.onreadystatechange = ready;
		s.onerror = s.onload = callback;
		s.src = url;
		loadscript.tag('head')[0].appendChild(s);
		function ready(){
			if (s.readyState == 'loaded' || s.readyState == 'complete') {
				callback();
			}
		};
	}
}

loadscript.js('js1.js',function(){
  loadscript.js('js2.js',function(){
	loadscript.js('js3.js',function(){
	  loadscript.js('js4.js',function(){
		loadscript.js('js5.js',function(){
		  loadscript.js('js6.js',function(){
		  });
		});
	  });
	});
  });
});

var loadscript =
{
	$$:function(id){return document.getElementById(id)},
	tag:function(element){return document.getElementsByTagName(element)},
	ce:function(element){return document.createElement(element)},
	ls:function (url){
		var req = this.createXmlHttp();
		req.open('GET',url, false);
		req.send(null);
		//alert (req.status);
		if (req.status == 200 || req.status == 0) {
			window.eval(req.responseText);
		};
	},
	createXmlHttp: function (){
		var xmlHttp;
		if (window.ActiveXObject) {
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		}else if (window.XMLHttpRequest){
			xmlHttp = new XMLHttpRequest();
		}
		return xmlHttp;
	}
}

$(document).ready(function() {
    $('#wrap ul.unviewable').hide();
    $('#wrap h2').hover(function() {
        $(this).css({
            'cursor': 'pointer',
            'background': '#047'
        });
    },
    function() {
        $(this).css({
            'cursor': 'default',
            'background': '#046'
        });
    })
}) $('#wrap h2').click(function() {
    var id = this.id;
    if ($(this).next().attr('class') != 'viewable') {
        $('#wrap ul.viewable').slideUp('slow',
        function() {
            $(this).attr({
                'class': 'unviewable'
            }).hide();
        });
        $('#' + id).next().slideDown('slow',
        function() {
            $(this).attr({
                'class': 'viewable'
            }).css({
                height: 'auto'
            });
        });
    }
})

ul, li, h2 {
	margin:0;
	padding:0;
}
li {
	list-style:none;
}
#wrap {
	width:300px;
	border:1px solid #000;
	padding:1px;
}
#wrap h2 {
	padding: 2px 10px 3px 10px;
	border: 2px outset #5AA0B8;
	background: #046;
	color: #FFF;
	height: 19px;
	vertical-align: bottom;
	font:14px/1.6 Arial, Helvetica, sans-serif;
}
#wrap ul {
	height:auto;
}
#wrap ul li {/*display:inline;*/
	padding-left:10px;
}
#wrap ul li a {
	font:12px/1.6 Arial, Helvetica, sans-serif;
	text-decoration:none;
}

<ul id="wrap">
  <li>
    <h2 id="arms">武器特色</h2>
    <ul class="viewable">
      <li><a href="#">3</a></li>
      <li><a href="#">大刀</a></li>
      <li><a href="#">长枪</a></li>
      <li><a href="#">弓箭</a></li>
      <li><a href="#">火枪</a></li>
      <li><a href="#">宝剑</a></li>
      <li><a href="#">大刀</a></li>
      <li><a href="#">长枪</a></li>
      <li><a href="#">弓箭</a></li>
      <li><a href="#">火枪</a></li>
    </ul>
  </li>
  <li>
    <h2 id="equip">装备特色</h2>
    <ul class="unviewable">
      <li><a href="#">2</a></li>
      <li><a href="#">大刀</a></li>
      <li><a href="#">长枪</a></li>
      <li><a href="#">弓箭</a></li>
      <li><a href="#">火枪</a></li>
      <li><a href="#">宝剑</a></li>
      <li><a href="#">大刀</a></li>
      <li><a href="#">长枪</a></li>
      <li><a href="#">弓箭</a></li>
      <li><a href="#">火枪</a></li>
      <li><a href="#">宝剑</a></li>
      <li><a href="#">大刀</a></li>
      <li><a href="#">长枪</a></li>
      <li><a href="#">弓箭</a></li>
      <li><a href="#">火枪</a></li>
      <li><a href="#">宝剑</a></li>
      <li><a href="#">大刀</a></li>
      <li><a href="#">长枪</a></li>
      <li><a href="#">弓箭</a></li>
      <li><a href="#">火枪</a></li>
      <li><a href="#">宝剑</a></li>
      <li><a href="#">大刀</a></li>
      <li><a href="#">长枪</a></li>
      <li><a href="#">弓箭</a></li>
      <li><a href="#">火枪</a></li>
      <li><a href="#">宝剑</a></li>
    </ul>
  </li>
  <li>
    <h2 id="other">其他特色</h2>
    <ul class="unviewable">
      <li><a href="#">1</a></li>
      <li><a href="#">大刀</a></li>
      <li><a href="#">长枪</a></li>
      <li><a href="#">弓箭</a></li>
      <li><a href="#">火枪</a></li>
      <li><a href="#">宝剑</a></li>
      <li><a href="#">大刀</a></li>
      <li><a href="#">长枪</a></li>
    </ul>
  </li>
</ul>

$(document).ready(function() {
$('#wCookies').click(function(){
  $.cookie('name', 'test',{expires: 7});				  
});
$('#rCookies').click(function(){
  var test = $.cookie('name');
  alert (test);
});
$('#dCookies').click(function(){
	$.cookie('name', null);							  
});
});