How to use the Layui framework to develop a logistics tracking application that supports instant express delivery inquiries

How to use the Layui framework to develop a logistics tracking application that supports instant express delivery inquiries

Introduction:
With the rapid development of e-commerce, the logistics industry has also received With the rapid development, people's demand for tracking logistics information is also getting higher and higher. This article mainly introduces how to use the Layui framework to develop a logistics tracking application that supports instant express delivery query, so that users can easily check their own express delivery status.

1. Introduction to Layui Framework
Layui is a lightweight front-end UI framework that provides a wealth of basic CSS and JS components to help developers quickly build various pages. It is characterized by simplicity, ease of use, flexibility and scalability, and is very suitable for the development of lightweight projects.

2. Preparation work

1. Download the Layui framework: You can download it through the official website (https://www.layui.com/), unzip it and introduce the relevant files into the project.
2. Get the logistics query interface: Get the interface that supports logistics query by cooperating with the express company or using the API of the third-party logistics platform.

3. Page construction

1. Create query page
   In the HTML file, use the form component and button component provided by Layui to create a query form. The code example is as follows ：

<form class="layui-form" action="" lay-filter="searchForm">
    <div class="layui-form-item">
        <div class="layui-inline">
            <label class="layui-form-label">快递公司</label>
            <div class="layui-input-inline">
                <select name="company" lay-verify="required">
                    <option value="">请选择</option>
                    <!-- 自行填写快递公司列表 -->
                    <option value="sf">顺丰</option>
                    <option value="ems">EMS</option>
                    <option value="yt">圆通</option>
                </select>
            </div>
        </div>
        <div class="layui-inline">
            <label class="layui-form-label">快递单号</label>
            <div class="layui-input-inline">
                <input type="text" name="number" lay-verify="required" placeholder="请输入快递单号" autocomplete="off" class="layui-input">
            </div>
        </div>
        <div class="layui-inline">
            <button class="layui-btn" lay-submit lay-filter="search">查询</button>
        </div>
    </div>
</form>

2. Create results display page
   In the HTML file, use the table component provided by Layui to create a table for displaying logistics tracking information. The code example is as follows:

<table class="layui-table" lay-data="{id:'resultTable', url:'', method:'POST', page:true, limit:10, limits:[10, 20, 30], cols:[[ //表头
        {field: 'time', title: '时间', width:180},
        {field: 'status', title: '状态', width: 120},
        {field: 'location', title: '地点', width: 240}
]]}" lay-filter="resultTable"></table>

4. Page logic implementation

1. Introduce the necessary JS files
   In the HTML file, introduce the core library layui.js of the Layui framework, and then introduce the self- The defined JavaScript file is used to implement page logic. The code example is as follows:

<script src="layui.js"></script>
<script src="app.js"></script>

2. Write JavaScript logic
   In the app.js file, use Layui's form component to monitor the submission of the form Event, when the user inquires about express delivery, the query request is sent and the result table is updated. The specific code is as follows:

layui.use(['table', 'form'], function(){
    var table = layui.table;
    var form = layui.form;

    // 监听表单提交事件
    form.on('submit(search)', function(data){
        // 获取用户输入的快递公司和快递单号
        var company = data.field.company;
        var number = data.field.number;

        // 根据快递公司和快递单号发送查询请求，获取物流跟踪信息
        // 使用第三方物流平台的API进行查询
        // ...

        // 假设获取到的物流跟踪信息为一个数组resultList
        var resultList = [{time: '2020-01-01 08:00', status: '已揽件', location: '上海'},
                          {time: '2020-01-02 10:00', status: '配送中', location: '北京'},
                          {time: '2020-01-03 14:00', status: '已签收', location: '广州'}];

        // 清空结果表格
        table.reload('resultTable', {
            data: [],
            page: false
        });

        // 更新结果表格
        table.reload('resultTable', {
            data: resultList,
            page: true
        });

        return false;
    });
});

5. Summary
By using the Layui framework, we can quickly build a logistics tracking application that supports instant express query. This article uses the components and methods provided by Layui to build the query page and result display page, and combines it with the API of the third-party logistics platform to implement the query and display functions of logistics tracking information. I hope this article can help readers better understand and use the Layui framework.

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