How to implement search function in uniapp

How to implement the search function in uniapp

The search function is an important function that most applications have today. It can facilitate users to quickly find the content they need. In uniapp, we can use its powerful cross-platform capabilities to implement an efficient search function.

1. Preparation
Before we start writing code, we need to prepare some basic content. First of all, you need to make sure that you have set up the uniapp development environment according to uniapp's official documentation and are familiar with the basic usage of uniapp. Secondly, make sure you have prepared the data source you need to search. This can be static local data or dynamic data obtained from the server.

2. Create a search component
In uniapp, we can implement the search function by creating a component. First, create a folder named search under the components folder of the project, and then create the search.vue file under the folder. In this file, we write the following code:

<template>
  <div class="search-wrapper">
    <input type="text" v-model="keyword" @input="search(keyword)" placeholder="请输入关键字" />
    <ul>
      <li v-for="(item, index) in searchResult" :key="index">{{ item }}</li>
    </ul>
  </div>
</template>

<script>
export default {
  data() {
    return {
      keyword: '', // 搜索关键字
      searchData: ['苹果', '香蕉', '橙子', '西瓜', '葡萄'], // 原始数据
      searchResult: [], // 搜索结果
    };
  },
  methods: {
    search(keyword) {
      this.searchResult = this.searchData.filter(item => item.includes(keyword));
    },
  },
};
</script>

<style>
.search-wrapper {
  padding: 10px;
}
input {
  width: 100%;
  padding: 5px;
  margin-bottom: 10px;
}
ul {
  list-style: none;
  padding: 0;
}
li {
  padding: 5px 0;
  border-bottom: 1px solid #999;
}
</style>

In the above code, we realize the two-way binding of the search box and keyword by using the v-model directive , when the user enters a keyword in the input box, the value of keyword will change accordingly. Then, in the search method, we filter out the data matching the keyword by using the filter method and save the results in searchResult. Finally, use the v-for directive in the template to render the search results.

3. Use the search component in the page
In order to use the search component we created on the page, we need to introduce the component into the page where we need to add the search function. Suppose we need to add search functionality to the index.vue page. We need to introduce the search component into the script tag in the page, and then use the component in the template.

<template>
  <div class="index">
    <search></search>
  </div>
</template>

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

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

<style>
.index {
  padding: 10px;
}
</style>

In the above code, we first use the import statement to introduce the search component. Then, register the component in the components attribute and use the <search></search> tag in the template.

4. Run the project and test the search function
Now, we can run the project, open the page in the browser, and you will see a simple search box. When we enter keywords, the search results will be matched according to the keywords and displayed in real time.

Through the above steps, we have successfully implemented the search function in uniapp. You can further optimize the search algorithm or add search conditions based on actual needs. In short, through uniapp's cross-platform capabilities, efficient search functions can be easily implemented on multiple platforms.

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