Detailed explanation of custom components and nested component functions in Vue documentation

Vue.js is an excellent JavaScript framework. It has a powerful component system that makes us more convenient and flexible when developing pages. Custom components and nested components are important parts of the Vue.js component system. This article will explain their usage and functions in detail.

1. Custom components

1. Define components

In Vue.js, we can define a component through the Vue.component() function, which receives Two parameters, the first parameter is the name of the component, the second parameter is the configuration object of the component, the most important of which is the template attribute, which represents the template code of the component.

Sample code:

Vue.component('my-component', {
template: '

This is a custom component

'
})

2. Use components

After defining the custom component, we can use it in the template. We only need to write the component name in the template. Note that the component name must start with a lowercase letter and be hyphenated.

Sample code:

new Vue({
el: '#app'
})

2. Nested components

1. Define nested components

In Vue.js, we can nest another component within a component. We only need to write the name of the nested component in the template. Also note that the name of the nested component must also start with a lowercase letter and be hyphenated.

Sample code:

Vue.component('my-component', {
template: '

This is a custom component

',
components: {

'sub-component': {
  template: '<div>这是一个被嵌套的自定义组件</div>'
}

}
})

2. Use embedded Nested component

After defining the nested component, we can use it in the template. We also only need to write the component name in the template.

Sample code:

new Vue({
el: '#app'
})

3. Function explanation

1.Vue.component()

This function is used to define a component and receives two parameters. The first is the component name (must start with a lowercase letter and use a hyphen), and the second is the component's configuration object.

2.components

A property in the component configuration object, which is used to define nested components and can be an object or an array.

3.template

A property in the component configuration object, which is used to represent the template code of the component.

4. Summary

This article explains in detail the usage methods and functions of custom components and nested components in Vue.js, hoping to help beginners better understand and use Vue. js component system. In actual projects, rational use of components can improve the maintainability and reusability of code, and is a very important development skill.

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