How to implement keyword search in uniapp

How to implement keyword search in uniapp

In the current era of information explosion, search has become one of the important ways for us to obtain the information we need. In mobile application development, how to implement keyword search in uniapp and provide users with convenient search functions is a very important technical challenge. This article will introduce how to implement keyword search in uniapp and provide code examples for reference.

1. Create a search box component

First, we need to create a search box component in uniapp for users to enter keywords. You can add the following code to the template file of the page:

<template>
  <view class="search-container">
    <input class="search-input" type="text" v-model="keyword" placeholder="请输入关键字" />
    <button class="search-btn" @click="search">搜索</button>
  </view>
</template>

In this code, we use the input component provided by uniapp as the search box, and use v-model to bind a keyword The variable keyword, so that the content entered by the user can be obtained through keyword.

2. Implement the search function

Next, we need to implement the search function in the logic file (script) of uniapp. You can add the following code to the vue instance:

<script>
export default {
  data() {
    return {
      keyword: '', // 用户输入的关键字
      searchResult: [], // 搜索结果
    };
  },
  methods: {
    search() {
      // 根据关键字进行搜索，此处假设搜索的数据存在dataList数组中
      this.searchResult = this.dataList.filter(item =>
        item.title.includes(this.keyword)
      );
    },
  },
};
</script>

In this code, we define a search method to search based on keywords entered by the user. Through the filter method, we can filter out the elements containing keywords in the dataList array and assign the search results to the searchResult array.

3. Display the search results

Finally, we need to display the search results on the page. You can add the following code to the template file:

<template>
  <view>
    <!-- 搜索框组件 -->
    <SearchBar :keyword.sync="keyword" @search="search" />

    <!-- 搜索结果展示 -->
    <view v-if="searchResult.length > 0">
      <view v-for="item in searchResult" :key="item.id" class="result-item">
        <!-- 展示搜索结果内容 -->
        <text>{{ item.title }}</text>
      </view>
    </view>

    <!-- 无搜索结果时的提示 -->
    <view v-else class="no-result">
      <text>暂无搜索结果</text>
    </view>
  </view>
</template>

In this code, we first use the custom SearchBar component and pass in the keyword and search method. When the user enters a keyword and clicks the search button, the search method is triggered.

Then, in the part that displays the search results, we use the v-for instruction to traverse the searchResult array and display the searched results. If the searchResult array is empty, it means that no search results are found, and the prompt text "No search results yet" is displayed.

Summary

Through the above steps, we successfully implemented the keyword search function in uniapp. Users can enter keywords in the search box, and after clicking the search button, the system will search based on the keywords and display the search results. In this way, users are provided with a convenient search experience.

Of course, the actual search function may be more complex than the above code example and can be optimized and expanded according to the actual needs of the project. I hope this article can help you implement keyword search in uniapp.

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