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This article mainly explains the "Vue child component monitoring parent component instance analysis", the content of the article is simple and clear, easy to learn and understand, now please follow the editor's train of thought slowly in-depth, together to study and learn "Vue child component monitoring parent component instance analysis"!

Child components listen for changes in parent component values

Use watch to listen for changes in parent component values in child components

/ / Child component props: ["a"], watch: {a (oldValue, newValue) {/ / oldValue an old value / / newValue a new value}} child component listens for value synchronization update data of parent component

Sub-component

Props: ["data"]

Subcomponent snooping

Watch: {data: (n, o) = > {/ / Arrow function otherwise this will change console.log (n.img) this.imgs = n.img} Thank you for your reading. The above is the content of "Vue child component monitoring parent component instance analysis". After the study of this article, I believe you have a deeper understanding of the problem of Vue child component monitoring parent component instance analysis. The specific use situation still needs to be verified by practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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