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Vue动态监听,computed与watch的取舍 #23

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heightzhang opened this issue Aug 1, 2017 · 0 comments
Open

Vue动态监听,computed与watch的取舍 #23

heightzhang opened this issue Aug 1, 2017 · 0 comments
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@heightzhang
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computed
watch

watch用于观察属性发送变化后，做额外处理。
与computed属性的差别在于作用对象不同，watch观察变化的源头，而computed属性是变化的目标，当然，两者可以互相转换。两者如何取舍在于：变化的源与目标哪部分的属性更多，如果多个源属性变化影响一个目标属性则建议使用computed；相反，如一个源属性变化影响了多个目标属性，则建议采用watch。

参考来源:Vue相关属性总结
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