vue.runtime.esm.js:4605 [Vue warn]: Error in mounted hook: "TypeError: Cannot read properties of undefined (reading '0')"

这个错误是由于在mounted钩子函数中对undefined的属性进行读取。根据引用的说明，可以将挂载函数从created中移至mounted中来解决这个问题。在mounted中调用函数之前，确保相关数据已经被正确初始化。具体来说，你可以在return语句后添加`|| {}`来表示如果状态为空对象，则返回一个空对象作为默认值。这样可以避免在读取属性时出现undefined的错误。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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