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//先获取非行间样式。 function getStyle(obj,attr){ if(obj.currentStyle){ return obj.currentStyle[attr]; }else{ return getComputedStyle(obj, false)[attr]; } } function move(obj,json,fn){ clearInterval(obj.timer); obj.timer = setInterval(function(){ var bStop = true; for(var attr in json){ //第一步算元素的初始值 var iCur = 0; //判断属性是否为透明度 if(attr == "opacity"){ iCur = parseInt(parseFloat(getStyle(obj,attr))*100) }else{ iCur = parseInt(getStyle(obj,attr)); } //算速度 var speed = (json[attr]-iCur)/8; //速度取整 speed = speed>0?Math.ceil(speed):Math.floor(speed); //判断是否都已经到达目的地 if(iCur != json[attr]){ bStop = false; } //运动原理 if(attr == "opacity"){ obj.style.opacity = (iCur+speed)/100; obj.style.filter = "alpha(opacity:"+(iCur+speed)+")" }else{ obj.style[attr] = iCur+speed+"px"; } } if(bStop){ clearInterval(obj.timer); fn&&fn(); } },30) } 1075083208
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