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计算属性有什么作用 #530

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Rashomon511 opened this issue Jun 22, 2019 · 0 comments
Open

计算属性有什么作用 #530

Rashomon511 opened this issue Jun 22, 2019 · 0 comments

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@Rashomon511
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先来看一下计算属性的定义：
当其依赖的属性的值发生变化的时，计算属性会重新计算。反之则使用缓存中的属性值。
计算属性和vue中的其它数据一样，都是响应式的，只不过它必须依赖某一个数据实现，并且只有它依赖的数据的值改变了，它才会更新。
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@Rashomon511