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This article mainly shows you the "why v-for in vue to add key value", the content is easy to understand, clear, hope to help you solve doubts, the following let Xiaobian lead you to study and learn "why v-for in vue add key value" this article.

Why does v-for add the value of key?

What is vue? Vue is a progressive JavaScript framework for building a user interface. The difference between Vue and other large frameworks is that using Vue can be applied layer by layer from bottom to top, and its core library only focuses on the view layer, which facilitates integration with third-party libraries and projects, and uses Vue to develop complex single-page applications using single-file components and libraries supported by the Vue ecosystem.

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