jQuery 获取DOM元素
(function (window){
var arr=[];
var VP=function(selector,context){
return new VP.fn.init(selector,context);
}
VP.fn=VP.prototype={
contstructor:VP,
init:function(selector,context){
var _document=window.document,elem,mark=selector.charAt(0);
if(mark=='#'){
elem =_document.getElementById(selector.substring(1));
if(elem){
this[0]=elem;
this.length=1;
}
}
return this;
},
splice:arr.splice,
};
VP.extend=VP.fn.extend=function(){
var options,name,src,copy,copyIsArray,clone,target=arguments[0]||{},
i=1,
length=arguments.length,
deep=false;
if(typeof target=="boolean"){
deep=target;
target=arguments[i]||{};
i++;
}
if(typeof target !=="object"&&!VP.isFunction(target)){
target={};
}
if(i==length){
target=this;
i--;
}
for(;i<length;i++){
for(name in options){
src=target[name];
copy=options[name];
if(target==copy){
continue;
}
if(deep&©&&(VP.isPlainObject(copy)||
(copyIsArray=VP.isArray(copy)))){
if(copyIsArray){
copyIsArray=false;
clone=src && VP.isArray(src)?src:[];
}
else{
clone=src&&VP.isPlainObject(src)?src:{};
}
target[name]=VP.extend(deep,clone,copy);
}
else if(copy !==undefined){
target[name]=copy;
}
}
}
}
return target;
};
VP.fn.extend({
get:function(){
return this[0];
},
});
VP.fn.init.prototye=VP.fn;
window.VP=VP;
})(window);
