Detailed explanation of the implementation process of form classification components in Vue documentation

Vue is an excellent front-end development framework. Its two-way data binding and component-based development ideas bring great convenience to front-end developers. In Vue's official documentation, the implementation process of the form's classification component is a good example, so let's discuss the implementation process of this component in detail.

The main function of this component is to implement form classification, similar to "industrial and commercial registration information" or "personal information". Users can display different form contents by clicking on different classification tabs.

First, we need to prepare some data, including classification labels, form content data, etc. In Vue, we can use the data attribute to store this data and initialize it.

data() {
  return {
    tabs: [
      { label: '基本信息', name: 'basic' },
      { label: '联系方式', name: 'contact' },
      { label: '工作经历', name: 'work' },
      { label: '教育经历', name: 'edu' }
    ],
    formData: {
      basic: {
        name: '',
        gender: '',
        birthDate: '',
        profession: ''
      },
      contact: {
        phone: '',
        email: '',
        address: ''
      },
      work: [
        {
          company: '',
          position: '',
          startDate: '',
          endDate: ''
        }
      ],
      edu: [
        {
          school: '',
          major: '',
          startDate: '',
          endDate: ''
        }
      ]
    },
    activeTab: 'basic'
  }
}

Among them, the tabs array stores the data of classification labels, and the formData object stores the form data under different classification options. The activeTab attribute represents the currently selected tab.

Next, we need to render the structure and style of the component. In Vue, we can use the template tag to define the structure of the component. The v-for instruction can traverse the tabs array and render the corresponding label button based on each object in it. The v-if directive is used to control the display of the form content of the currently selected tag.

<template>
  <div class="form">
    <div class="tab">
      <button
        v-for="tab in tabs"
        :key="tab.name"
        :class="{ active: activeTab === tab.name }"
        @click="activeTab = tab.name"
      >
        {{ tab.label }}
      </button>
    </div>
    <div class="form-content">
      <div v-if="activeTab === 'basic'">
        <h3>基本信息</h3>
        <form>
          <!-- 表单内容 -->
        </form>
      </div>
      <div v-if="activeTab === 'contact'">
        <h3>联系方式</h3>
        <form>
          <!-- 表单内容 -->
        </form>
      </div>
      <div v-if="activeTab === 'work'">
        <h3>工作经历</h3>
        <form>
          <!-- 表单内容 -->
        </form>
      </div>
      <div v-if="activeTab === 'edu'">
        <h3>教育经历</h3>
        <form>
          <!-- 表单内容 -->
        </form>
      </div>
    </div>
  </div>
</template>

Finally, we need to bind the corresponding formData data to each form item and update the value of the data when inputting. Vue provides the v-model directive, which can easily implement two-way binding.

For example, for the name input box, we can write like this:

<div class="form-item">
  <label>姓名：</label>
  <input type="text" v-model="formData.basic.name">
</div>

In this way, when the user enters the name information in the input box, Vue will automatically update the value of formData.basic.name, This enables two-way binding of data.

At this point, we have completed the implementation of the form classification component. This component can be applied to various form classification scenarios and has high practical value and scalability. At the same time, through this example, we also have a deeper understanding of Vue's data binding and instruction mechanism.

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