"TypeError: Cannot read properties of undefined (reading '0')"什么意思

"TypeError: Cannot read properties of undefined (reading '0')"的意思是，代码尝试读取一个未定义的对象的属性，而这个属性是数组的第一个元素(索引为0)。这种错误通常发生在试图访问一个不存在或未初始化的对象的属性时。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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