What is the use of the v-once instruction in Vue

This post is about what the v-once command in Vue does. Xiaobian thinks it is quite practical, so share it with everyone for reference. Let's follow Xiaobian and have a look.

v-once

v-once associated instances are rendered only once. After rerendering, the instance and all its children are treated as static content skips, which can be used to optimize update performance.

This will never change:{{msg}} //single element//has child elements comment

{{msg}}

//Component {{i}}

In the example above, msg,list is not rerendered even if it changes.

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