微信小程序开发animation心跳的动画效果代码案例详细说明

<view class="bottomViewItem"> 
  <view class="bottomMiddleHeaderView" bindtap="voteClick" data-id="value"> 
   <view class="bottomMiddleHeaderItem" animation="{{animationMiddleHeaderItem}}"> 
   <!-- 心跳 --> 
   <view class="bottomMiddleHeaderItemSubView"> 
    <image src="/images/detail_vote_heart.png" style="width:32rpx; height:32rpx;" animation="{{animationMiddleHeaderItem}}"></image> 
   </view> 
   <!-- 投票文字 --> 
   <view class="bottomMiddleHeaderItemSubView">投票</view> 
   </view> 
  </view> 
 </view>

js文件中：

// 页面渲染完成 
 onReady: function () { 
  var circleCount = 0; 
  // 心跳的外框动画 
  this.animationMiddleHeaderItem = wx.createAnimation({ 
  duration:1000, // 以毫秒为单位 
  /** 
  * http://cubic-bezier.com/#0,0,.58,1 
  * linear 动画一直较为均匀 
  * ease 从匀速到加速在到匀速 
  * ease-in 缓慢到匀速 
  * ease-in-out 从缓慢到匀速再到缓慢 
  * 
  * http://www.tuicool.com/articles/neqMVr 
  * step-start 动画一开始就跳到 100% 直到动画持续时间结束 一闪而过 
  * step-end 保持 0% 的样式直到动画持续时间结束  一闪而过 
  */ 
  timingFunction: 'linear', 
  delay: 100, 
  transformOrigin: '50% 50%', 
  success: function (res) { 
  } 
  }); 
  setInterval(function() { 
  if (circleCount % 2 == 0) { 
   this.animationMiddleHeaderItem.scale(1.15).step(); 
  } else { 
   this.animationMiddleHeaderItem.scale(1.0).step(); 
  } 
  this.setData({ 
   animationMiddleHeaderItem: this.animationMiddleHeaderItem.export() 
  }); 
  circleCount++; 
  if (circleCount == 1000) { 
   circleCount = 0; 
  } 
  }.bind(this), 1000); 
 },
2、微信显示倒计时
wxml文件中：

<!--倒计时 --> 
 <view class="countDownTimeView countDownAllView" > 
 <view class="voteText countDownTimeText">{{countDownDay}}天</view> 
 <view class="voteText countDownTimeText">{{countDownHour}}时</view> 
 <view class="voteText countDownTimeText">{{countDownMinute}}分</view> 
 <view class="voteText countDownTimeText">{{countDownSecond}}秒</view> 
 </view>
js文件中：

Page( { 
 data: { 
 windowHeight: 654, 
 maxtime: "", 
 isHiddenLoading: true, 
 isHiddenToast: true, 
 dataList: {}, 
 countDownDay: 0, 
 countDownHour: 0, 
 countDownMinute: 0, 
 countDownSecond: 0, 
 }, 
 //事件处理函数 
 bindViewTap: function() { 
 wx.navigateTo( { 
  url: '../logs/logs' 
 }) 
 }, 
 onLoad: function() { 
 this.setData( { 
  windowHeight: wx.getStorageSync( 'windowHeight' ) 
 }); 
 }, 
 // 页面渲染完成后 调用 
 onReady: function () { 
 var totalSecond = 1505540080 - Date.parse(new Date())/1000; 
 var interval = setInterval(function () { 
  // 秒数 
  var second = totalSecond; 
  // 天数位 
  var day = Math.floor(second / 3600 / 24); 
  var dayStr = day.toString(); 
  if (dayStr.length == 1) dayStr = '0' + dayStr; 
  // 小时位 
  var hr = Math.floor((second - day * 3600 * 24) / 3600); 
  var hrStr = hr.toString(); 
  if (hrStr.length == 1) hrStr = '0' + hrStr; 
  // 分钟位 
  var min = Math.floor((second - day * 3600 *24 - hr * 3600) / 60); 
  var minStr = min.toString(); 
  if (minStr.length == 1) minStr = '0' + minStr; 
  // 秒位 
  var sec = second - day * 3600 * 24 - hr * 3600 - min*60; 
  var secStr = sec.toString(); 
  if (secStr.length == 1) secStr = '0' + secStr; 
  this.setData({ 
  countDownDay: dayStr, 
  countDownHour: hrStr, 
  countDownMinute: minStr, 
  countDownSecond: secStr, 
  }); 
  totalSecond--; 
  if (totalSecond < 0) { 
  clearInterval(interval); 
  wx.showToast({ 
   title: '活动已结束', 
  }); 
  this.setData({ 
   countDownDay: '00', 
   countDownHour: '00', 
   countDownMinute: '00', 
   countDownSecond: '00', 
  }); 
  } 
 }.bind(this), 1000); 
 }, 
 //cell事件处理函数 
 bindCellViewTap: function (e) { 
 var id = e.currentTarget.dataset.id; 
 wx.navigateTo({ 
  url: '../babyDetail/babyDetail?id=' + id 
 }); 
 } 
})
效果图：
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