"Cannot read property 'length' of undefined"报错处理
vue2 “Cannot read property ‘length’ of undefined” 最近在项目中总是遇见报错"length of undefined"的问题，因为项目的需要要显示存在的个数，所以通过length来进行求职 this.projectReportSumNum = val.reportArray.length; 虽然界面可以显示length数据，但是控制台肥肠傲娇一直报错
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相关文章
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