微信小程序开发使用loading组件显示载入动画方法

<view class="copyright">
    <view class="copyright_item">CopyRight：All Right Reserved</view>
    <view class="copyright_item">原创作者：HTML51.COM</view>
    <view class="copyright_item">微信小程序开发者社区：51小程序</view>
    <view class="copyright_item"><image class="img" src="../copyright/image/logo.png"/></view>
    <view class="goto_counter"><button type="default" bindtap="goto_counter">点击进入弹出loading加载框页面</button></view>
</view>

Page({
    data: {
        loadingHidden: true
    },
    loadingTap: function(){
        this.setData({
          loadingHidden: false
        });
        var that = this;
        setTimeout(function(){
          that.setData({
              loadingHidden: true
          });
          that.update();
        }, 3000);
    }
})

<loading hidden="{{loadingHidden}}">
        加载中...
</loading>
<button type="default" bindtap="loadingTap">点击弹出loading</button>