jquery连缀语法如何实现

sx.$=function(id){
var t=(typeof(id)=="string"?document.getElementById(id):id);
t.text=function(){
return this.innerText?this.innerText:this.innerHTML.replace(//<.*?/>/igm,"");
}
t.html=function(){
return this.innerHTML?this.innerHTML:null;
}
t.first=function(){
return this.firstChild?this.firstChild.nodeName!="#text"?sx.$(this.firstChild):null:null;
}
t.last=function(){
return this.lastChild?this.lastChild.nodeName!="#text"?sx.$(this.lasChild):null:null;
}
t.pre=function(){
return this.previousSibling?sx.$(this.previousSibling):null;
}
t.next=function(){
return this.nextSibling?sx.$(this.nextSibling):null;
}
t.parent=function(){
return this.parentNode?sx.$(this.parentNode):null;
}
t.setevent=function(e,f){
if(t.attachEvent){
t.attachEvent("on"+e,f);
}else{
t.addEventListener(e,f,false);
}
}
t.removeevent=function(e,f){
if(t.dettachEvent){
t.dettachEvent("on"+e,f);
}else{
t.removeEventListener(e,f,false);
}
}
t.setstyle=function(s){
var s=s.split(",");
for(var i=0;i<s.length;i++){
var s1=s[i].split(":");
this.style[s1[0]]=s1[1];
}
}
t.getstyle=function(s){
if(this.currentStyle){
return this.currentStyle[s];
}else{
return document.defaultView.getComputedStyle(this,null).getPropertyValue(s);
}
}
t.selectpath=function(m){
var m1=m;
var m=m.split("/");
var t=[];
var e=this.getElementsByTagName("*");
for(var i=0;i<e.length;i++){
var e1=e[i]
var a="";
var i1=m.length-1;
while(e1!=this){
a=e1.tagName+"/"+a;
e1=e1.parentNode;
//alert(a);
}
//alert(a);
if(m1.toLowerCase()+"/"==a.toLowerCase()){
t.push(sx.$(e[i]));
}
}
return t;
}
t.get=function(a){
return this.getAttribute(a);
}
t.set=function(a,v){
return this.setAttribute(a,v);
}
t.paste=function(h){
if(typeof(h)=="string"){
var d=document.createElement("span");
d.innerHTML=h;
}else{
var d=document.createElement("span");
d.appendChild(h);
}
var t1=this.childNodes;
for(var i=0;i<t1.length;i++){
alert(t1[i])
this.removeChild(t1[i]);
}
this.appendChild(d);
d.removeNode(false);
}
return t;
}
sx.$$=function(){
var t=[]
for(var i=0;i<arguments.length;i++){
t.push(sx.$(arguments[i]))
}
return t;
}