Comments (1)
CDwenhuohuo
commented on June 24, 2024
1，v-for优先级要高于v-if
2，如果v-for和v-if同时使用，会造成不必要的Dom操作或性能损耗，列①：v-if和v-for作用于一个元素，v-if的条件判断为false，该元素可能会被删除，导致v-for无法正常工作。列②：v-for已经可以满足渲染的控制可见性的需求，不需要再使用v-if指令，而v-if&&v-for一起使用，每次循环都要重新进行判断计算v-if，并对每个元素进行条件判断哦，所以很浪费性能
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