Vue development experience summary: avoid common mistakes and pitfalls

Vue is a modern JavaScript framework with excellent responsive data binding, component development, virtual DOM and other features. It is suitable for building single-page applications and complex front-end applications. program. The ecosystem of Vue is also getting larger and larger, such as Vue-cli, vuex, vue-router, etc., which greatly facilitates the development of Vue. However, even if you have a certain understanding of Vue, you will still encounter some common mistakes and pitfalls during the development process. Below, this article dives into suggestions for avoiding common mistakes and pitfalls in Vue development.

1. Data type error

Vue's responsive system can perfectly monitor data changes and implement two-way data binding, so Vue requires that the data must be observable. Simply put, Vue supports Object, Array, Set, Map, WeakMap, WeakSet and other data types. When developers use one of the unsupported types, Vue will not be able to update the view or monitor data changes in real time.

When using Vue, try to avoid using some hard-to-observe data types, such as Number, String, Boolean and other primitive data types.

2. Improper use of life cycle

Properly defining and using Vue's life cycle can improve Vue application performance and stability. Vue's life cycle hooks include created, mounted, updated, destroyed, etc. If these hook functions are used incorrectly, it may cause problems such as suspended animation of the application or failure of subcomponents.

For example, do not use asynchronous request data in the mounted hook to render the DOM, because the mounted hook will be executed immediately after the component is mounted. If the data request takes a long time, the DOM may not be displayed before the rendering is completed. . It is recommended to use created or activated hook functions.

3. Improper use of Vuex

Vuex is a state management pattern developed specifically for Vue.js applications to manage shared state data. If you use Vuex incorrectly, it may cause Vuex's state and view to be out of sync, or cause data inconsistency.

When using Vuex, you should pay attention to the following points:

• Modifying the state of Vuex should be changed by submitting a mutation, rather than modifying the state directly.
• When using Vuex state in a component, you should use the computed property instead of calling the Vuex state directly (such as: {{ this.$store.state.count }}).
• When defining getters in Vuex, do not use them as mutations or actions.

4. Reuse of components

Vue’s component development is a major advantage of Vue. It provides an efficient way to reuse code, allowing applications to decouple multiple maintainable components from a complex module. However, if you don't pay attention to how you reuse components, it may lead to component bugs and duplicate code reading and writing.

When using Vue components, you should pay attention to the following points:

• Components should be highly versatile and can be reused in different applications.
• The data in the component should be as independent and reusable as possible, and do not introduce the state of the application layer.
• Components should avoid the problem of style pollution affecting other components or global styles.

5. Ethical Constraints and Performance Issues

In Vue development, just using the special features of Vue is not enough to build an excellent application. It also involves a lot of ethical constraints and performance issues.

The following are some points that you should pay attention to during Vue development:

• Comply with JavaScript best practices and coding standards.
• Load components and resources on demand to avoid resource waste and performance degradation.
• Follow the "single responsibility" principle to split a large component into multiple smaller components to increase the maintainability of the code.
• Use build tools such as Webpack or Rollup to improve application performance and loading speed.

Conclusion

The above are suggestions for avoiding common mistakes and pitfalls in Vue development. While every project has different needs, by adhering to best practices and rules, you can improve development efficiency and application performance. Vue's ecosystem is huge and its community is quite active. Taking a look at the official Vue documentation and the Vue plugins or code samples on GitHub can help developers avoid common mistakes and improve the quality of their code.

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