Polymer 完成处理器上的聚合物核心动画

如何紧迫地抓住终点

  var animation = new CoreAnimation();
  animation.duration = 500;
  animation.keyframes = [ {opacity: "1"},{opacity: "0"}];
  animation.target = self.myElement;
  animation.play();

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这解决了我的问题：

    self.myElement.addEventListener('core-animation-finish', function(e) {
              console.log('finish!');
    });

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问题是什么，你的代码似乎满足了你的要求？它不起作用，当听“核心动画完成”时，什么都没有发生。我想知道play方法中是否有回调之类的东西。

 var animation = new CoreAnimation();
  animation.duration = 500;
  animation.keyframes = [ {opacity: "1"},{opacity: "0"}];
  animation.target = this.$.myElement;
  animation.play();

animation.addEventListener('core-animation-finish', function(e) {
              console.log('finish!');
 });