echarts.js:2282 There is a chart instance already initialized on the dom.

这个错误是因为在同一个元素上初始化了多个echarts实例。根据引用和引用的代码片段，我可以看出在使用echarts库时，通常需要先检查该元素是否已经有了echarts实例，如果有的话就直接使用已有的实例，如果没有的话则进行初始化。而根据引用的建议，可以在定义变量myChart之外，在echarts.js文件中声明一个全局变量myChart，可以避免重复初始化实例的问题。所以，要解决这个错误，你可以先检查一下代码中是否有重复初始化的情况，确保每个元素只初始化一次echarts实例即可。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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