JSX syntax in Vue3: a more flexible template writing method

JSX syntax in Vue3: a more flexible template writing method

Vue is one of the most popular front-end frameworks at the moment. It not only has responsive data binding, but also has componentization capabilities. In Vue3, JSX syntax is officially introduced. This syntax, with its intuitive and flexible features, will bring a new way of writing templates to Vue3 users.

So, what is JSX syntax? In fact, JSX is an abbreviation for JS, which is similar to a template language. It writes HTML structures directly in the code. It not only supports DOM elements, but also components. JSX is an ever-popular innovation that continues to improve the front-end engineering experience. Vue3 also introduces JSX into its template writing method.

The JSX syntax in Vue3, called "Vue3 jsx", is very similar to the JSX syntax in React. However, in order to better match the characteristics of Vue, the JSX syntax in Vue3 has some differences. Features. We can demonstrate the use of JSX syntax in Vue3 by creating a single file component.

<template>
  <div class="box">
    <h1 id="title">{{ title }}</h1>
    <p>这是一个用Vue3 JSX编写的组件。</p>
    <button onClick={ handleClick }>点击我！</button>
  </div>
</template>

<script>
import { defineComponent } from 'vue'

export default defineComponent({
  data() {
    return {
      title: 'Vue3 JSX',
    }
  },
  methods: {
    handleClick() {
      alert('Clicked!')
    }
  }
})
</script>

<style scoped>
.box {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
</style>

We can see that using JSX syntax in Vue3, we can import the defineComponent method in the component through import { defineComponent } from 'vue', this It is a newly added method in Vue3, specifying the component instance. At the same time, we define the data, methods and other attributes of the component instance. In the component template, we can use double brackets {{}} to bind data, or we can bind methods through function names.

Similarly, Vue3 also supports nesting of components. We can combine the componentization ideas of Vue3 and introduce new components as follows:

<template>
  <div class="box">
    <h1 id="title">{{ title }}</h1>
    <p>这是一个用Vue3 JSX编写的组件。</p>
    <button onClick={ handleClick }>点击我！</button>
    <child-component></child-component>
  </div>
</template>

<script>
import { defineComponent } from 'vue'
import ChildComponent from './child-component'

export default defineComponent({
  data() {
    return {
      title: 'Vue3 JSX',
    }
  },
  methods: {
    handleClick() {
      alert('Clicked!')
    }
  },
  components: {
    ChildComponent
  }
})
</script>

<style scoped>
.box {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
</style>

As you can see, when using JSX syntax , to create a sub-component just add a tag in the component template, and then introduce it in the components configuration of the component.

To summarize, using JSX syntax in Vue3, we can achieve the following advantages:

1. More intuitive: You can write HTML elements and components directly in JSX syntax to make it more intuitive Reflect the template structure.
2. Simple and easy to use: Vue3’s JSX syntax is almost the same as React’s syntax, making it easier for developers to get started.
3. Global sharing: Traditional Vue components using JSX syntax can be reused across modules.
4. Flexible combination: JSX syntax can be used in combination with traditional Vue component templates, allowing developers to choose the template method according to specific circumstances.

In short, using JSX syntax in Vue3 is a more flexible template method, which can be more intuitive, simple, easy to use, and conducive to combination, and will provide Vue3 users with better Development experience.

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