How to implement autocomplete and autofill through vue and Element-plus

How to implement auto-complete and auto-fill through Vue and Element Plus

Introduction:
In modern web development, form auto-complete and auto-fill are an important functional requirement. It can improve user experience and reduce the tediousness and errors of repeated input. This article will introduce how to use Vue and Element Plus to implement auto-complete and auto-fill functions, and provide corresponding code examples.

1. What is autocomplete and autofill

1. Autocomplete (Autocomplete): When the user enters content in a text input box, the system will proceed based on the existing data. Filter and display matching results for users to select.
2. Autofill: Based on the user's past input history or saved data, the system will automatically fill in the corresponding fields in the form, reducing the user's input work.

2. Use Element Plus to implement the automatic completion function

Element Plus is an open source UI component library based on Vue, which provides a rich set of UI components and easy-to-use interfaces. The following are the steps to implement the auto-complete function through Element Plus:

1. Install Element Plus

In the Vue project, install Element Plus through npm or yarn:

npm install element-plus

2. Introduce the Element Plus component

Introduce the required Element Plus component into the component that needs to be used, such as ElAutocomplete:

<template>
  <el-autocomplete
    v-model="keyword"
    :fetch-suggestions="querySearch"
    @select="handleSelect">
  </el-autocomplete>
</template>

<script>
import { ref } from 'vue';

export default {
  setup() {
    const keyword = ref('');

    const querySearch = (queryString, cb) => {
      // 根据queryString获取匹配的结果，调用cb传递给autocomplete显示
      // 示例的话，可以在这里调用接口或者根据本地数据做匹配操作
    };

    const handleSelect = (item) => {
      // 处理选中结果的逻辑
    };

    return {
      keyword,
      querySearch,
      handleSelect,
    };
  },
};
</script>

3. Implement the querySearch method

In the above code, we define the querySearch method. In this method, we can filter and match based on the keywords entered by the user, and return the matching results to ElAutocomplete component.

4. Processing handleSelect method

In addition, we also define the handleSelect method, which is used to process the logic after the user selects an automatically completed result. . This method can perform business operations according to actual needs, such as saving selection results or page jumps.

3. Use Element Plus to realize the automatic filling function

Element Plus also provides corresponding components and interfaces to realize the automatic filling function. The following are the steps to implement the automatic filling function through Element Plus:

1. On the form fields that need to be automatically filled, use the ElInput component and set the corresponding attributes, such as v-model.

<template>
  <el-form :model="form" label-width="100px">
    <el-form-item label="名字">
      <el-input v-model="form.name" :value="autocompleteValue" @input="handleInput"></el-input>
    </el-form-item>
  </el-form>
</template>

2. Define handleInput method

In the above code, we define the handleInput method. In this method, according to the user The input content is matched and filtered, and then the matching results are assigned to the autocompleteValue variable.

<script>
import { ref } from 'vue';

export default {
  setup() {
    const form = ref({
      name: '',
    });

    const autocompleteValue = ref('');

    const handleInput = () => {
      // 根据用户输入的内容进行匹配和筛选
      // 将匹配的结果赋值给autocompleteValue变量
    };

    return {
      form,
      autocompleteValue,
      handleInput,
    };
  },
};
</script>

3. Implement handleInput method

In the handleInput method, we can match and filter based on the user input, and then match the results Assign a value to the autocompleteValue variable. You can use interface calls or local data for matching operations.

Summary:

Through Vue and Element Plus, we can easily implement auto-complete and auto-fill functions. Using the components and interfaces provided by Element Plus can reduce the development workload and improve development efficiency. We hope that the introduction and code examples in this article can help developers better understand and apply the autocomplete and autofill functions.

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