Choose vue2.0 or 3.0

With the release of Vue 3.0, many developers can't help but ask: "Should I use Vue 2.0 or 3.0?". Vue 3.0 brings some important updates and improvements, but it may also have some incompatibility issues with older project code. There are a few factors we need to consider before making a decision.

1. Performance

Vue 3.0 brings some significant performance improvements, rewrites Virtual DOM, improves render and update speed, and optimizes Tree Shaking performance , improved internal caching mechanism and so on.

In Vue 3.0, the reactive system has been rewritten and uses Proxy instead of Object.defineProperty in ES5, which improves application performance and development experience.

However, it should be noted that the new compiler in Vue 3.0 may be less used in some special cases due to improved kernel protocols such as reactive systems (for example, using third-party compilers in Vue2 plug-in). This may have some impact on the performance of your application, so there's a trade-off.

2. Compatibility

Vue 2.0 and Vue 3.0 have made some improvements to the syntax and API, resulting in some code incompatibilities that may occur during the update to 3.0 Case.

Various plug-ins and UI frameworks also need to be updated accordingly to support Vue 3.0. If your application currently relies on many third-party plugins in Vue 2.0, porting it to a Vue 3.0 environment may take some time and work.

In addition, since the Composition API in Vue3.0 is very different from the Options API in Vue2.0, the project structure and code logic may need to be changed. If your development team doesn't have the skills for Vue 3.0 or has less time and budget, it may be more appropriate to defer it to a later project.

3. Ecology

The Vue 2.0 ecosystem is very mature and covers almost all scenarios and application needs. Many plugins and libraries now support Vue 2.0 and have large communities. If your application requires a lot of third-party resource support, then Vue 2.0 is suitable.

Although the Vue 3.0 ecosystem is still in the development process, compared with Vue 2.0, Vue 3.0 versions of a considerable number of core libraries and plug-ins have already appeared one after another. However, applications that are widely built using Vue 2.0 such as WordPress, Nuxt.js, etc. may take more time to match Vue 3.0.

4. Development Experience

Vue 3.0 introduces the new Composition API, which provides developers with a more flexible and logical way to write code. These new APIs make the code more modular and can better manage the application's state and computed properties.

In addition, Vue 3.0 also provides more compiler warnings and errors to help you find and fix problems faster.

In summary, you should consider the following factors before deciding whether to use Vue 3.0:

• If your team is already familiar with Vue2.0 and the application can continue to run, no need For more third-party library support, the Vue2.0 version can still be used.
• If you are developing a new application that requires support from a large number of third-party libraries, then Vue2.0 is also a very suitable choice.
• If your team has a high interest in new technologies and your application requires better performance and a more flexible API, Vue 3.0 will bring a better experience.
• If your team is developing a brand new application and requires the application to have a more robust structure and a better development experience, Vue3.0 is a better choice.

All in all, Vue 2.0 is still a powerful front-end framework suitable for applications that require support from a large number of third-party resources. Vue 3.0 is an excellent framework with better performance, more flexible API and better development experience. Whichever version you choose, you'll need to consider your team's skills, time, and budget.

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