JavaScript实现模拟论坛评分动画及弹窗效果

JavaScript实现模拟论坛评分动画及弹窗效果

本文通过一个完整的HTML与JavaScript示例，展示了如何模拟中关村论坛的评分交互。代码利用定时器实现元素位置移动的动画，并在动画结束后触发透明度渐变消失效果，最终生成带有“谢谢参与”字样的提示框，适用于学习基础JS动画与DOM节点管理。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>JS仿中关村论坛评分后弹出提示的效果</title>
</head>
<body>
<script language="javascript">
var x=window.x||{};
x.creat=function(t,b,c,d){
this.t=t;
this.b=b;
this.c=c;
this.d=d;
this.op=1;
this.div=document.createElement("div");
this.div.style.height="40px";
this.div.style.width="100px";
this.div.style.background="red";
this.div.style.position="absolute";
this.div.style.left="50%";
this.div.style.marginLeft="-50px"
this.div.style.marginTop="-20px"
this.div.innerText="谢谢参与！经验+5"
this.div.style.fontSize="12"
this.div.style.lineHeight=this.div.style.height
this.div.style.textAlign="center";
this.div.style.fontWeight="bold";
//this.div.style.border="solid red 1px";
this.div.style.color="#fff"
this.div.style.top=(this.b+"%");
document.body.appendChild(this.div);
this.run();
}
x.creat.prototype={
run:function(){
var me=this;
this.div.style.top=-this.c*(this.t/this.d)*(this.t/this.d)+this.b+"%";
this.t++;
this.q=setTimeout(function(){me.run()},25)
if(this.t==this.d){
clearTimeout(me.q);
setTimeout(function(){me.alpha();},1000);
  }
 },
alpha:function(){
var me=this;
if("\v"=="v"){
this.div.style.filter="progid:DXImageTransform.Microsoft.Alpha(opacity="+this.op*100+")";
this.div.style.filter="alpha(opacity="+this.op*100+")";
  ;}
else{this.div.style.opacity=this.op}
this.op-=0.02;
this.w=setTimeout(function(){me.alpha()},25)
if(this.op<=0){
clearTimeout(this.w);
document.body.removeChild(me.div);
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 }
}
new x.creat(1,50,25,30);
</script>
</body>
</html>

希望本文所述的代码示例能为JavaScript程序设计提供有益的参考。