Cannot read property 'userName' of undefined
时间: 2023-11-14 22:25:40 浏览: 36
当出现错误消息"TypeError: Cannot read property 'userName' of undefined"时,这意味着你正在尝试访问一个未定义的属性'userName'。根据引用的上下文,这个错误可能是由于异步获取服务器数据时,Vue绑定数据时,你的lang对象是空的导致的。因此,尝试访问lang对象中的'userName'属性会导致错误。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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