div layer_javascript 스킬의 이동 및 성능 최적화

function Endrag(source,target){
source =typeof(source)=="object" ? source:document.getElementById(source)
target=typeof(target)=="object" ? target:document.getElementById(target); var x0= 0,y0=0,x1=0,y1=0,moveable=false,index=100;
var 타이머,flag=false;
var i=0
source.onmousedown= function(e ){
e = e ? e : (window.event ? window.event : null)
x0 = e.clientX ;
y0 = e.clientY ; (parseInt( source.style.left))?0:parseInt(source.style.left);
y1 = isNaN(parseInt(source.style.top))?0:parseInt(source.style.top);
moveable = true;
//마우스를 누르면 타이머가 작동하기 시작하고 50ms마다 mousemove 이벤트를 실행합니다.
timer=setInterval(function(){flag=true;},30); 🎜> }//드래그;
source.onmousemove=function(e){
e = e ? e : (window.event ? window.event : null); ) {
if(flag){
i ;
flag=false;
target.style.left = (e.clientX x1 - x0 )
target.style. top = (e.clientY y1 - y0 ) "px";
}
}
//드래그 중지; if(moveable) {
moveable = false;
//alert(i)
}
}; source.onmouseout=function (e){
if(moveable) {
moveable = false;
clearInterval(timer)
//alert(i); ;
}