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How to use JS and Baidu Maps to implement map information window customization

PHPzOriginal: 2023-11-21 13:38:241283browse

How to use JS and Baidu Map to implement the customization function of the map information window

Baidu Map is a commonly used Web map service that can display geographical information and Provide relevant interactive functions. Among them, the map information window is a common function used to display detailed information of a specified location on the map. This article will introduce how to use JS and Baidu Maps to implement customized functions of the map information window, and provide specific code examples.

Before we begin, we need to ensure that we have applied for a Baidu Maps developer account and obtained the corresponding API key. Next, we will implement the customization function of the map information window step by step.

(1) Introduce Baidu Map API and related resources

First, introduce Baidu Map’s JavaScript API and style resources at the head of the page. The code example is as follows:

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>地图信息窗口自定义功能</title>
    <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=your_api_key"></script>
    <link rel="stylesheet" type="text/css" href="http://api.map.baidu.com/library/InfoBox/1.2/src/InfoBox_min.css" />
    <script type="text/javascript" src="http://api.map.baidu.com/library/InfoBox/1.2/src/InfoBox_min.js"></script>
</head>
<body>
    <div id="map" style="width: 100%; height: 600px;"></div>
</body>
</html>

Please replace "your_api_key" in the above code with the Baidu Map API key you applied for.

(2) Create a map container and initialize the map

Next, create a div container with the id "map" in the body tag of the page to display the map. Then, when the page has finished loading, use JavaScript code to initialize the map. The code example is as follows:

<script type="text/javascript">
    var map = new BMap.Map("map");  // 创建地图实例
    var point = new BMap.Point(116.404, 39.915);  // 定义地图中心点的经纬度坐标
    map.centerAndZoom(point, 15);  // 设置地图的中心点和缩放级别

    map.enableScrollWheelZoom(true);  // 启用地图滚轮缩放功能
</script>

With the above code, we successfully created a map instance and set the center point and zoom level of the map. Additionally, we have enabled wheel zooming for the map.

(3) Customized map information window

Next, we will use the InfoBox plug-in provided by Baidu Maps to implement a customized map information window. First, we need to create an InfoBox object and set related configuration items. The code example is as follows:

<script type="text/javascript">
    var myInfoBox = new BMapLib.InfoBox(map, "自定义信息窗口内容", {
        boxStyle: {
            width: "200px",
            height: "100px",
            background: "#fff",
            borderRadius: "5px",
            padding: "10px"
        },
        closeIconMargin: "1px 1px 0 0",
        enableAutoPan: true,
        align: INFOBOX_AT_TOP
    });

    // 定义一个marker，并为marker添加点击事件
    var marker = new BMap.Marker(point);
    marker.addEventListener("click", function(){
        myInfoBox.open(marker);
    });
    
    map.addOverlay(marker);  // 将marker添加到地图中
</script>

In the above code, we create an InfoBox instance named myInfoBox, and set the window style, automatic adjustment position, and close button position through related configuration items. Next, we added a click event for a marker. When the marker is clicked, a custom information window will open. Finally, we add markers to the map.

So far, we have successfully implemented the customization function of the map information window. You can adjust the style and content of the InfoBox according to your own needs.

Summary:

This article introduces how to use JS and Baidu Maps to implement the customization function of the map information window. By introducing Baidu Map API and related resources, create a map container and use JavaScript to initialize the map. Then, by using Baidu Map's InfoBox plug-in, we implemented a customized map information window and added a click event for the marker to trigger the display of the window.

If you have further needs, you can also expand the map information window and related interactive functions through other functions provided by Baidu Maps. I hope this article can be helpful to you, and I wish you success in map development!

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