VUE3 introductory tutorial: Use Vue.js plug-in to encapsulate pop-up components

Vue.js has become one of the indispensable technologies in modern web development. Although some basic concepts and syntax of Vue.js are relatively easy to learn, digging deeper into the core concepts and functions of Vue.js requires more practice. In this article, we will introduce how to use the Vue.js plug-in to encapsulate a pop-up component for use in VUE3.

1. Understand the concept of Vue.js plug-in

Vue.js plug-in can extend the functions of Vue.js. Plug-ins provide Vue.js global functions, such as adding global methods or binding Vue.js instructions. Encapsulating code into plug-ins can be easily reused in Vue.js projects.

The most common form of Vue.js plug-in is the Object object, which has an install method, which will be called in the Vue.js instance. In the install method, you can add new functionality to the Vue.js instance or modify existing functionality.

2. Create a Vue.js pop-up component plug-in

Before implementing the pop-up component in Vue.js, you need to create a Vue.js plug-in. This plug-in adds the function of pop-up component to the Vue.js instance.

The first step in creating a plug-in is to write the plug-in Object object. The Object object contains two properties: install method and popup component.

const PopupPlugin = {
  install: function(Vue, options) {
      // some code
  },
  Popup: PopupComponent
}

In the install method, the pop-up component is added to the Vue.js instance. In order for the Vue instance to refer to the component within the plug-in, you need to create a Vue.js component constructor using the Vue.extend method.

const PopupConstructor = Vue.extend(PopupComponent);

Then, use PopupConstructor to create a Popup component instance and mount it in document.body.

const instance = new PopupConstructor({
      el: document.createElement('div')
  });
document.body.appendChild(instance.$el);

Finally, bind the Popup component instance to the Vue.js instance prototype. In this way, you can use the this.popup method in Vue.js to display the pop-up component.

Vue.prototype.$popup = function(options) {
      // some code
  }

3. Design Vue.js pop-up component

The pop-up component contains two parts: template and logic. Templates are used to define the appearance of pop-up components and logically handle the interaction of pop-up components.

First, write the template of the pop-up component. The template needs to be written using the syntax of Vue.js components.

<template>
  <div>
    <div class="popup-bg"></div>
    <div class="popup-box">
      <slot>
        <!--content-->
      </slot>
      <div class="popup-footer">
        <button class="popup-confirm" @click="confirm">OK</button>
      </div>
    </div>
  </div>
</template>

Next, write the logic of the pop-up component. The logic mainly includes pop-up window status management and user event processing.

<script>
    export default {
        data() {
            return {
                show: false,
                title: '',
                message: '',
                confirm: () => {},
            }
        },
        methods: {
            open(title, message, confirm) {
                this.show = true;
                this.title = title;
                this.message = message;
                this.confirm = confirm;
            },
            close() {
                this.show = false;
            }
        }
    }
</script>

Among them, the open method is used to open the pop-up window and set the title, content and confirmation callback function of the pop-up window. The close method is used to close the pop-up window.

4. Use the Vue.js pop-up component plug-in

After the Vue.js pop-up component plug-in is created, you can use the pop-up component it adds in the Vue.js instance.

First, import PopupPlugin and register it in the Vue.js instance.

import PopupPlugin from './path/PopupPlugin'

Vue.use(PopupPlugin);

Then, use this.$popup method in the Vue.js component to open the pop-up window.

this.$popup(
    '提示',
    '您确定要删除该项吗？',
    () => {
        // some code
    }
);

This example shows how to use the Vue.js plug-in to encapsulate a pop-up component and use it in a Vue.js project. By creating a Vue.js pop-up component plug-in, you can easily add the pop-up component to a Vue.js instance to achieve rapid reuse.

The above is the detailed content of VUE3 introductory tutorial: Use Vue.js plug-in to encapsulate pop-up components. For more information, please follow other related articles on the PHP Chinese website!