I saw a tutorial when I was watching brother correspondence. It said that prop should use computed to deal with father-son communication. As if I had seen other people"s father-son correspondence before, the tutorial did not say so. The small example of father-son communication that I wrote also did not use computed. So is this correct in the article? It seems that the vue document also mentioned that it is best to use this calculation property. Is that so?
vue
console.logLet's first come to a conclusion. This is reasonable and recommended, but it is not absolute. It still depends on the understanding and use of parent-child component communication.
when the parent and child components communicate, the data is transmitted unidirectionally, so that the data of the parent and child components can be isolated. Using computed, an object can be re-obtained as the internal data of the child component. When the data of the child component changes, it does not affect the state of the parent component. In addition, when the data in props does not conform to the format of the sub-component, computed can also convert the format.
but,
prop data will not be changed in subcomponents, such as just displaying a number, then it is not necessary to use computed , just use it directly. Previous: How does cordova achieve the function of obtaining camera stream in real time like webRtc?
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