console.log()打印playPauseIcon的值为 Object {pause: 1} <button class="iconButton play" ng-click="onClickPlayPause()" ng-class="playPauseIcon" aria-label="Play/Pause"></button> 问题就在这 class里面的play应该为pause才对。多次点击就会出现这种情况。时好时坏的那种感觉， 双向绑定怎么会出现这种问题啊，很郁闷啊。
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The fields starting with
aria are for assistive programs for people with disabilities. I didn’t see your onClick code or where the button text is assigned..
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The fields starting with
aria are for assistive programs for people with disabilities. I didn’t see your onClick code or where the button text is assigned..