两个页面之间的通信

<script>
window.onload=function(){
var oDiv=document.getElementById(‘div’）;
oDiv.onmousedown=function(ev){
 var ev=window.event ||ev;
var disX=ev.clientX-oDiv.offsetLeft;
var disY=ev.clientY-oDiv.offsetTop;
document.onmousemove=function(ev){
var factX=ev.clientX-disX;
var factY=ev.clientY-disY;
oDiv.style.left=factX+‘px‘;
oDiv.style.top=factY+‘px‘;
localStorage.json=JSON.stringify({left:oDiv.offsetLeft,top:oDiv.offsetTop});
}
document.onmouseup=function(){
     document.onmousemove=null;
}
}
}
</script>

<script>
 window.onload=function(){
    var oDiv=document.getElementById(‘div‘);
  window.onstorage=function(ev){
     var json=JSON.parse(localStorage[ev.key]);
oDiv.style.left=json.left+"px";
oDiv.style.top=json.top+"px";
}
}
</script>