rror in nextTick: "TypeError: Cannot read properties of undefined (reading 'init')"

引用\[1\]:报错 "Cannot read properties of undefined" 是指在代码中尝试访问一个未定义的属性或方法。解决这个问题的方法是在访问之前先进行判断，确保该属性或方法已经存在。在你提供的代码中，可以使用if语句来判断this.$refs.chart是否存在，然后再执行this.$nextTick()方法。具体代码如下：

if (this.$refs.chart) {
  this.$nextTick(() => {
    let chart3 = this.$refs.chart3;
    vm.myChart3 = this.$echarts.init(chart3);
    vm.myChart3.setOption(option, true);
  });
}

这样，当this.$refs.chart存在时，才会执行后续的代码，避免了访问未定义属性的错误。
#### 引用[.reference_title]
- *1* [Error in nextTick: “TypeError: Cannot read properties of undefined (reading ‘getAttribute’)” ...](https://blog.csdn.net/syz1203/article/details/120416499)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control,239^v3^insert_chatgpt"}} ] [.reference_item]
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