當npm install下項目后 新建vue 參照原型寫頁面時 出現這個問題Cannot use v-for on stateful component root element because it renders multiple elem ents
才發現原來 template內層進行嵌套div時 如果使用v-for循環 此div外還需要嵌套一個div 要不然渲染不了 如圖：
解決方案：
1.在v-for的div外再嵌套一個div就ok了
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