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This article mainly introduces the example analysis of virtual DOM in vue, which has a certain reference value, and interested friends can refer to it. I hope you will gain a lot after reading this article.

Virtual DOM

Advantages:

Guarantee the lower limit of performance: the virtual DOM of the framework needs to adapt to any operations that may be generated by the upper API, and the implementation of some of its DOM operations must be universal, so its performance is not optimal; but its performance is much better than that of rough DOM operations, so the virtual DOM of the framework can at least guarantee good performance without manual optimization, that is, the lower limit of performance.

No need to operate DOM manually: we no longer need to manipulate DOM manually, we just need to write the code logic of View-Model. The framework will update our views in a predictable way according to virtual DOM and two-way binding of data, which greatly improves our development efficiency.

Cross-platform: virtual DOM is essentially a JavaScript object, while DOM is strongly related to the platform. Compared with virtual DOM, it is more convenient for cross-platform operations, such as server rendering, weex development, and so on.

Disadvantages:

Unable to carry out extreme optimization: although the reasonable optimization of virtual DOM + is sufficient to meet the performance needs of most applications, virtual DOM can not carry out targeted extreme optimization in some applications with high performance requirements.

The principle of virtual DOM implementation:

The implementation principle of virtual DOM mainly includes the following three parts:

Use JavaScript object to simulate the real DOM tree and abstract the real DOM

Diff algorithm-compare the differences between two virtual DOM trees

Pach algorithm-applies the difference between two virtual DOM objects to the real DOM tree.

Thank you for reading this article carefully. I hope the article "sample Analysis of Virtual DOM in vue" shared by the editor will be helpful to you. At the same time, I also hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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