How to use JS and Baidu Maps to implement map traffic display function

How to use JS and Baidu Maps to implement the map traffic display function requires specific code examples

As a leading domestic map service provider, Baidu Maps provides a rich API Interface can easily integrate map-related functions into websites or applications. Among them, the map traffic display function is required by many applications, such as travel applications, real-time traffic monitoring, etc. The following will introduce how to use JS and Baidu Maps to implement the map traffic display function, and provide specific code examples.

1. Preparation

1. Register a Baidu Map developer account, create an application, and obtain the AK key.
2. Introduce the Javascript library file of Baidu Map API into the HTML file. The sample code is as follows:

<script type="text/javascript" src="https://api.map.baidu.com/api?v=2.0&ak=你的AK秘钥"></script>

3. Create an HTML tag containing a map container. The sample code is as follows:

<div id="container"></div>

2. Implement the map traffic display function

1. Create a map instance, and set the map center point and zoom level.

var map = new BMap.Map("container");                     // 创建地图实例
var point = new BMap.Point(116.404, 39.915);            // 创建中心点坐标
map.centerAndZoom(point, 15);                            // 设置中心点和缩放级别

2. Enable the traffic layer to display traffic information.

map.addTileLayer(new BMap.TrafficLayer());               // 启用路况图层
map.setTrafficOn();                                      // 显示路况信息

3. Add controls to implement zoom and pan operations.

map.addControl(new BMap.NavigationControl());           // 添加平移缩放控件

4. Add markers and information windows to display location information.

var marker = new BMap.Marker(point);                    // 创建标记
map.addOverlay(marker);                                  // 添加标记
var infoWindow = new BMap.InfoWindow("我的位置");        // 创建信息窗口
marker.addEventListener("click", function(){             // 点击标记时显示信息窗口
    map.openInfoWindow(infoWindow, point);
});

3. Complete code example

    
    
    <script type="text/javascript" src="https://api.map.baidu.com/api?v=2.0&ak=你的AK秘钥"></script>


    

    

4. Summary

It is very simple to use JS and Baidu Maps to display map traffic conditions. You only need to introduce Baidu Map API Library file, create a map instance and enable the traffic layer. While displaying traffic conditions, you can also customize functions such as adding markers and information windows. Through this tutorial, developers can quickly understand and master the implementation method of map traffic display and use it in actual application projects.

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