How to create interactive forms using Vue and Element-UI

How to create interactive forms using Vue and Element-UI

Introduction:
In modern web development, forms are an integral part. As a popular JavaScript framework, Vue.js provides us with convenient and efficient data binding and component development, while Element-UI is a set of UI component libraries based on Vue, which provides a rich set of visual UI components and Flexible form validation capabilities. This article will introduce how to use Vue and Element-UI to create interactive forms and provide corresponding code examples.

Text:
Step 1: Install and introduce Vue and Element-UI
First, we need to install Vue and Element-UI in the project. You can use npm or yarn to install them. The specific commands are as follows:

npm install vue element-ui

or

yarn add vue element-ui

After the installation is complete, we need to introduce the styles and components of Vue and Element-UI in the main.js file. ：

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

Vue.use(ElementUI);

Step 2: Create a form component
Next, we need to create a Vue component to implement our interactive form. You can create a form component in a single file component (.vue). The specific code is as follows:

<template>
  <div>
    <el-form ref="form" :model="form" :rules="rules" label-width="100px">
      <el-form-item label="姓名" prop="name">
        <el-input v-model="form.name"></el-input>
      </el-form-item>
      <el-form-item label="年龄" prop="age">
        <el-input-number v-model="form.age"></el-input-number>
      </el-form-item>
      <el-form-item label="邮箱" prop="email">
        <el-input v-model="form.email"></el-input>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="submitForm">提交</el-button>
        <el-button @click="resetForm">重置</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
export default {
  data() {
    return {
      form: {
        name: '',
        age: '',
        email: '',
      },
      rules: {
        name: [
          { required: true, message: '请输入姓名', trigger: 'blur' },
        ],
        age: [
          { required: true, message: '请输入年龄', trigger: 'blur' },
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { type: 'email', message: '请输入有效的邮箱', trigger: ['blur', 'change'] },
        ],
      },
    };
  },
  methods: {
    submitForm() {
      this.$refs.form.validate((valid) => {
        if (valid) {
          alert('表单验证通过');
        } else {
          alert('表单验证失败');
          return false;
        }
      });
    },
    resetForm() {
      this.$refs.form.resetFields();
    },
  },
};
</script>

In the above code, we created a form containing name, age and email fields. el-form is the form container, el-form-item is the form item, el-input is the text input box, el-input-number is the number input box, and el-button is the button. Each form item corresponds to a v-model bound to the data object form to implement two-way binding. rules are form validation rules.

In methods, submitForm is the form submission method, use this.$refs.form.validate to verify whether the form is passed, resetForm is the reset form method, use this.$refs.form.resetFields to reset form.

Step 3: Use the form component in the parent component
Then, we need to use the form component we just created in the parent component. The specific code is as follows:

<template>
  <div>
    <form-component></form-component>
  </div>
</template>

<script>
import FormComponent from '@/components/FormComponent.vue';

export default {
  components: {
    FormComponent,
  },
};
</script>

In the above code, we import the form component and register it in components. Then introduce the form component into the template.

Summary:
By using Vue and Element-UI, we can create interactive forms quickly and easily. In this article, we mainly introduce how to install and introduce Vue and Element-UI, and how to create an interactive form component, and provide corresponding code examples. I hope this article will be helpful to developers who want to learn and use Vue and Element-UI to create forms.

Reference materials:

1. Vue official website: https://vuejs.org/
2. Element-UI official website: https://element.eleme.io/
3. Vue.js practical development-Wang Hongqi, People's Posts and Telecommunications Publishing House

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