AJAX的简单应用,包括js弹出DIV层、层拖动、ajax后台读取数据！注意getinfo.asp文件是以utf-8格式保存的，在getinfo.asp里面可以写读数据库代码！function createobj() {
if (window.ActiveXObject) {
return(new ActiveXObject(Microsoft.XMLHTTP));
}
else if (window.XMLHttpRequest) {
return(new XMLHttpRequest());
}
}
function personalInfo() {
var oBao=createobj();
var cont=document.getElementById(person_detial);
var cont_a=document.getElementById(person_content);
cont.style.display='block';
cont.style.cursor='pointer';
cont_a.innerHTML=请等待,加载中...;
var my_url=getinfo.asp?+Math.random();
oBao.open(get,my_url,true);
oBao.onreadystatechange=function(){
if(oBao.readyState==4){
if(oBao.status==200){
cont_a.innerHTML=oBao.responseText;
}else{
cont_a.innerHTML=出现错误,错误代码为:+oBao.status;
}
}
}
oBao.send();
}
function Drag(id)
{
var self=this;
this.obj=(typeof(id)==string)?document.getElementById(id):id;
this.obj.onmousedown=function(e)
{
e=e||window.event;
var obj=self.obj;//指向自己
if(e.layerX){obj.position={x:e.layerX,y:e.layerY};}
else{obj.position={x:e.offsetX,y:e.offsetY};}
document.onmousemove=self.start;
document.onmouseup=self.end;
}
this.start=function(e)
{
e=e||event;
document.onselectstart = function(){ return false; };
window.getSelection && window.getSelection().removeAllRanges();
var obj=self.obj;
obj.style.left=e.clientX-obj.position.x+px;
obj.style.top=e.clientY-obj.position.y+px;
}
this.end=function(e)
{
e=e||event;
document.onmousemove = document.onmouseup = document.onselectstart = null;
}
}