How to use Vue Element to implement the function of creating a new folder

Vue is an open source JavaScript framework for building user interfaces, and Element is a set of desktop component libraries based on Vue2.0 prepared for developers, providing basic components (such as buttons, input boxes, pop-ups windows, etc.) and advanced components (such as tables, date pickers, image uploads, etc.).

In this article, we will learn how to use Vue Element to implement the function of creating a new folder. This feature is an essential part of many projects and helps users organize and manage files.

First, we need to add Element dependency to the Vue project. You can use npm or yarn to install Element, as shown below:

npm install element-ui --save

or

yarn add element-ui

Next, we need to introduce Element into the Vue entry file and register it with the Vue instance. . You can add the following code to main.js:

import Vue from 'vue'
import ElementUI from 'element-ui'
import 'element-ui/lib/theme-chalk/index.css'

Vue.use(ElementUI)

Now, we can use the components provided by Element in the project. Next, we'll see how to use Element's components to create a form and add the ability to create a new folder.

Open your vue component and add the following code:

<template>
  <div>
    <el-form ref="form" :model="form" label-width="80px">
      <el-form-item label="文件夹名称" prop="name">
        <el-input v-model="form.name"></el-input>
      </el-form-item>
    </el-form>
    <div class="btn-wrapper">
      <el-button type="primary" @click="submitForm">创建</el-button>
    </div>
  </div>
</template>

<script>
export default {
  name: 'NewFolder',
  data() {
    return {
      form: {
        name: ''
      }
    }
  },
  methods: {
    submitForm() {
      this.$refs.form.validate(valid => {
        if (valid) {
          this.createFolder()
        } else {
          return false
        }
      })
    },
    createFolder() {
      // 在这里实现创建文件夹的功能
      // 比如使用axios向服务器发送请求等
    }
  }
}
</script>

In the above code, we use the basic specifications of Vue to create a component named NewFolder and add an input containing box and a form that creates a button.

In methods, we define a submitForm method, which will be called when the user clicks the create button. In the submitForm method, we called this.$refs.form.validate to verify whether the folder name entered by the user meets the requirements. If the verification passes, the createFolder method is called to implement the function of creating a new folder.

If we want to check whether the user entered the folder name, we can use prop in the el-form-item component to specify the validation rules and add an error message:

<el-form-item label="文件夹名称" prop="name">
  <el-input v-model="form.name"></el-input>
  <el-input
    v-model="form.name"
    maxlength="10"
    placeholder="请输入文件夹名称"
    show-word-limit
    clearable
    :class="{&#39;error&#39;: $refs.ref.validateState === &#39;error&#39;}"
  >
    <el-button slot="append" icon="el-icon-document-add"></el-button>
  </el-input>
  <div class="error-message">{{$refs.ref && $refs.ref.validateMessage}}</div>
</el-form-item>

In In the el-form-item component, we use prop to specify validation rules and add some properties to the el-input component. For example, we use the maxlength attribute to limit the length of the folder name, use the placeholder attribute to display a default prompt message, use the show-word-limit attribute to display the number of characters currently entered, and use the clearable attribute to allow the user to clear the input the contents of the box.

In the el-input component, we also added a button to trigger the operation of creating a new folder. Finally, we use a div element to display the error message. Among them, $refs.ref.validateState and $refs.ref.validateMessage are properties in the el-form-item component, which are used to check the validation status of the input box and display error messages.

Now, we have implemented a basic new folder form and used Vue Element components to add validation and interactive functions. You can customize the form style and validation rules according to your needs, and add appropriate logic in the createFolder method to implement the function of creating a new folder.

Summary

In this article, we learned how to use Vue Element to create a basic new folder form and added validation and interaction features. Through studying this article, you should master the basic knowledge of how to use the Element component library in Vue projects, and learn how to use form components to implement common user interaction functions.

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