Cannot read property 'getContext' of null

[1uokun]

小程序this.createSelectorQuery()有时候会拿不到DOM

有人推荐写在nextTick里，但还是会存在拿不到，有更好的写法吗🐶

wx.nextTick(() => {
  ...
  this.createSelectorQuery()
     .exec(res => {
            const canvas = res[0].node;
      })
  ...
}

[Gitjinfeiyang]

生命周期放的对嘛 ，之前还没遇到过这种情况🐶

[Gitjinfeiyang]

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