Comments (3)
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使用observe的数据说明这个数据是mutable的,而对于React来说,更推荐的是使用inmutable的数据,因为React是根据props和state的变化来探测一个组件是否需要执行更新的,而对于一个mutable的数据,改变来他的内容,但是他本身没有变化,如果拿他作为props,则会导致组件可能被shouldComponentUpdate误认为不需要更新的。
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确实,现在使用Provider在顶层使用context并不是一个很好的选择,因为context变化之后他的子树层级越多,他的性能消耗越大。所以react-redux也提出了想要一个觉解这个问题的方案,就看react官方会不会考虑来。目前来说,如果你不依赖redux,你自己实现store,是完全可以根据你自己的情况把context尽量放在低层级的,这样可以减少context的更新带来的性能影响。这里没有什么必须要,你完全可以根据自己的情况来实现。
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�多谢多谢,受教了🙏
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这是一个段落
这是一个引用
样式应该还不错,这样的, 这样的, code
function x() {
return a + b;
}
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