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Editor to share with you the vue long list performance optimization example analysis, I believe that most people do not know much about it, so share this article for your reference, I hope you will learn a lot after reading this article, let's go to know it!

Long list performance optimization

We should all know that vue will hijack data through object.defineProperty to achieve view response to data changes, but sometimes our components are pure data display, there will be no change, we do not need vue to hijack our data, in the case of a large amount of data display, this can significantly reduce the initialization time of components, so how to prohibit vue from hijacking our data? You can freeze an object through the object.freeze method, and once the frozen object is frozen, it can no longer be modified.

Export default {data: () = > ({users: {}}), async created () {const users = await axios.get ("/ api/users"); this.users = Object.freeze (users);}}

In addition, it is important to note that the value of users is only frozen, and references will not be frozen. When we need reactive data, we can re-assign values to users.

Export default {data: () = > ({users: []}), async created () {const users = await axios.get ("/ api/users"); this.users = Object.freeze (users);}, methods: {/ / change value does not trigger view response this.users [0] = newValue// change reference still triggers view response this.users = newArray}} The above is all the content of the article "sample Analysis of vue long list performance Optimization". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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