<view class='box' style='background-color:{{backgroundcolor}}'>
</view>
<view class='viewBox'>
  <button bindtap='changeColor' data-color='black' class='box'>黑</button>
  <button bindtap='changeColor' data-color='violet' class='box'>紫</button>
  <button bindtap='changeColor' data-color='orange' class='box'>橙</button>
  <button bindtap='changeColor' data-color='blue' class='box'>蓝</button>
  <button bindtap='changeColor' data-color='green' class='box'>绿</button>
</view>

  data: {
    backgroundcolor:'red'
  },
  changeColor:function(e){
    this.setData({
      backgroundcolor: e.currentTarget.dataset.color
    })
  }

<view class='animationSlow'></view>

.animationSlow {
   width: 100rpx;
  height: 100rpx;
  background-color: orange;
  animation-name: myfirst; /*动画的名称 */
  animation-duration: 2000ms; /*动画从开始到结束的时间*/
  animation-timing-function: linear; /*动画执行快慢的参数*/
  animation-iteration-count: infinite; /*动画执行多少次的参数*//*以下是兼容ios所需，参数意义与上相同*/
  -webkit-animation-name: myfirst;
  -webkit-animation-duration: 2000ms;
  -webkit-animation-timing-function: linear;
  -webkit-animation-iteration-count: infinite;
}
@keyframes myfirst {
  /*开始转的角度*/
  from {
    transform: rotate(0deg);
  }/*结束的角度*/
  to {
    transform: rotate(360deg);
  }
}
/*兼容ios*/
@-webkit-keyframes myfirst {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

<view class='animationSlow' style='animation-duration: 2000ms;-webkit-animation-duration: 2000ms;'></view>

  data: {
    animationTime:'2000ms'
  },

<view class='animationSlow' style='animation-duration: {{animationTime}};-webkit-animation-duration: {{animationTime}};'></view>

<view class='animationSlow' style='animation-duration: {{animationTime}};-webkit-animation-duration: {{animationTime}};animation-play-state:{{status}};-webkit-animation-play-state:{{status}};'></view>

 data: {
    animationTime:'2000ms',
    status: 'running'//paused
  },

 changeTime:function(e){
    this.setData({
      status: 'paused'
    })
    this.setData({
      timeAnimation: e.currentTarget.dataset.time,
      status: 'running'
    })
  },