JS 自动适应浏览器（onresize事件只执行一次，默认两次)

var resizeTimer = null;  
   function doResize()
   {  
   
    var screenWidth = document.body.offsetWidth;
    document.getElementById('frametable').style.left = (screenWidth-990)/2;
          resizeTimer=null ;
   }  
   window.onresize = function()
   {  
    if(resizeTimer==null)
    {  
      resizeTimer = setTimeout("doResize()",300);  
    }  
   }

 

 

让 onresize 事件只执行一次，默认两次，稍作修改。。。
<script>
var resizeTimer = null;


window.onresize = function(){
   resizeTimer = resizeTimer ? null : setTimeout(doResize,0);
}


function doResize(){
   alert('resize');
}
</script>