javascript動畫效果類封裝代碼

2024-09-06 12:41:40

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<input id=output3 style="position:absolute;top:300;left:300;"/>
<input id=output1 />
<input id=output2 />
<br/>
<input id=output4 />

<script>
function Animation(target,targetProperty,closure,precision)
{
  closure=closure||function(x){return x;};
  precision=precision||10;
  this.handle;

  var beginTime=new Date();
  var stopTime=new Date();
  this.Begin=function(){
    beginTime=new Date();
    this.handle=setInterval(
      function(){
        var now=new Date();
        target[targetProperty]=closure(now.getTime()-beginTime.getTime());
      },
      precision
    );
       }

  this.Continue=function(){
    var now=new Date();
    beginTime.setTime(now.getTime()-stopTime.getTime()+beginTime.getTime());

    this.handle=setInterval(
      function(){
        var now=new Date();
        target[targetProperty]=closure(now.getTime()-beginTime.getTime());
      },
      precision
    );
  }

  this.Stop=function(duration){

    clearInterval(this.handle);

    if(duration===undefined)
    {
      stopTime=new Date();
      duration=stopTime.getTime()-beginTime.getTime();
    }
    else stopTime.setTime(beginTime.getTime()+duration)
    target[targetProperty]=closure(duration);
  }
}

function StoryBoard(Duration,onfinish,flag)
{
  onfinish=onfinish||function(){};
  var r=new Array();
  r.appendAnimation=function(animation)
  {
    if(animation instanceof Animation)
      this.push(animation);
  }
  r.removeAnimation=function(animation)
  {
    for(var i=0;i<r.length;i++)
    {
      if(r[i]==animation)
      {
        r.splice(i,1);
        break;

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