How Vue3 differs from Vue2: Easier to understand documentation

The difference between Vue3 and Vue2: Easier to understand documentation

Introduction:

Vue.js is a very popular JavaScript framework for building user interfaces. As a self-driven framework, Vue.js continuously strives to improve and innovate to provide a better development experience. Vue3 is the latest version of Vue.js and has many new features and improvements compared to Vue2. This article will focus on the biggest difference between Vue3 and Vue2 - easier to understand documentation.

Changes in Vue3 documentation:

Vue2 has always had high-quality documentation, but it still takes a certain amount of time and effort to understand some complex concepts and advanced features. Vue3 has made huge improvements in documentation, making it easier for developers to understand and master the core concepts of the framework.

1. Composition API:

Vue3 introduces the Composition API, which is more flexible and intuitive than the Options API in Vue2. Using the Composition API, you can organize related logic and state into a custom function, which makes the code easier to read, maintain, and reuse.

Here is an example using the Composition API:

import { reactive, computed } from 'vue';

export default {
  setup() {
    const state = reactive({
      count: 0,
    });

    const doubleCount = computed(() => state.count * 2);

    const increment = () => {
      state.count++;
    };

    return {
      state,
      doubleCount,
      increment,
    };
  },
}

2. Better type inference and IDE support:

Vue3 introduces TypeScript and improves it A type inference system, which allows developers to find errors earlier and get better code completion and auto-completion in the IDE. The description of types in the document is also clearer and more accurate, helping developers better understand and use the framework.

3. More practical examples:

The Vue3 documentation adds more practical examples and cases to help developers better understand and apply the framework. The examples are concise and cover all aspects from basic usage to advanced features. Developers can get started quickly with these examples and apply what they learn in real projects.

Summary:

The biggest difference between Vue3 and Vue2 is the improvement of documentation. The new Composition API simplifies the development process, better type inference and IDE support make code writing safer and more efficient, and rich examples provide better learning and practice resources. As developers, we should keep abreast of and master these improvements in order to better use and promote the Vue.js framework.

Reference link:

• Composition API documentation: https://v3.vuejs.org/guide/composition-api-introduction.html
• TypeScript documentation: https://www.typescriptlang.org/docs/
• Vue3 official examples: https://v3.vuejs.org/examples

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