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55.Vue 中为什么避免 v-if 和 v-for 用在一起 #55

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wqjiao opened this issue May 11, 2020 · 0 comments

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wqjiao commented May 11, 2020

当 Vue 处理指令时，v-for 比 v-if 具有更高的优先级，通过v-if 移动到容器元素，不会再重复遍历列表中的每个值。取而代之的是，我们只检查它一次，且不会在 v-if 为否的时候运算 v-for

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