Comments (2)
tangbc
commented on June 20, 2024
如果想通过比较连续两次值是否相等来过滤掉其中一次无意义的更新操作所带来的成本是很大的，因为属性的值可能会是对象、函数、数组等复合对象，要想对它们进行值的比较是很困难的。
用 === 比较过滤相同值完全没问题，getter/setter 的问题不在这，在于的一点比如如果需要获取 oldValue 的话才是比较费成本的操作。
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xiaofuzi
commented on June 20, 2024
这里其实想表达的是同一个意思，值的比较主要是针对原子类型来的，对象的直接比较是没什么意义的，对象存储的是引用而不是值，所以如果对一个响应式对象进行重新赋值后，所需要对对象进行的处理以及计算与原有对象相比对页面的影响这一步的成本是很大的。
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