Why can vue run in the browser?

Vue is a modern front-end JavaScript framework that quickly renders pages in the browser. The superior performance of Vue is mainly reflected in the following aspects:

1. Vue's virtual DOM

Vue adopts the virtual DOM method, which abstracts the real DOM into a virtual DOM. Then compare it with the data and perform targeted DOM operations based on the differences to improve rendering performance. Virtual DOM can greatly increase the rendering speed of Vue, ensure the stability of the application, and also reduce the memory occupied by the program.

2. Vue’s data binding

Vue supports one-way data binding and two-way data binding. Two-way data binding works naturally with the virtual DOM, which means Vue can update HTML instances in real time faster as data changes, making code more streamlined and efficient. At the same time, Vue's data binding also supports functions such as form validation and form prompts, allowing front-end engineers to optimize and enhance.

3. Vue’s componentization

Vue adopts a componentization development method, which means that the page can be divided into reusable parts and then targeted for different business needs Design different components. The component-based development method can enhance the maintainability of the program and reduce code redundancy. It can also easily add new functions and maintain old functions.

4. Vue’s asynchronous request

Vue provides an asynchronous request API that can easily interact with back-end data. In the case of asynchronous request for data, Vue's reactivity system can still update the data in real time, which allows the data to be quickly obtained at any point in time, thus optimizing the timeliness of the program.

5. Vue’s life cycle

Vue provides a series of life cycle callbacks, which can perform different operations at different stages of the component, such as when the component is created (mounted ) and destruction (beforeDestroy), etc. These callbacks can handle some time-consuming operations and can also perform some optimizations, such as clearing memory and unbinding events when the component is destroyed.

In short, the emergence of Vue has greatly improved the efficiency of front-end development, improved web page performance, and increased the interactivity and maintainability of the website. Vue's design also makes it easier for web developers to develop interactive functions and achieve a more realistic user experience.

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