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Using JavaScript and Tencent Maps to implement map path planning function
Using JavaScript and Tencent Maps to implement map path planning function
Nov 21, 2023 pm 01:58 PM
Use JavaScript and Tencent Maps to implement map route planning function
In recent years, with the rapid development of the Internet, map navigation functions have become an essential tool for people to travel. In our daily lives, we often encounter situations where we need to plan the best route, such as travel, driving, delivery, etc. This article will introduce how to use JavaScript and Tencent Map API to implement the map route planning function, and provide relevant code examples.
First of all, we need to introduce the API of Tencent Maps and implement it through the following code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>地圖路徑規(guī)劃</title>
<style type="text/css">
#map-container {
width: 100%;
height: 400px;
}
</style>
<script src="http://map.qq.com/api/js?v=2.exp&key=YOUR_KEY"></script>
</head>
<body>
<div id="map-container"></div>
<script>
// 在這里編寫 JavaScript 代碼
</script>
</body>
</html>Among them, YOUR_KEY needs to be replaced with your own Tencent Maps API key.
Next, we need to implement the map display and path planning functions in JavaScript code. The specific code example is as follows:
// 初始化地圖
var map = new qq.maps.Map(document.getElementById('map-container'), {
center: new qq.maps.LatLng(39.916527, 116.397128), // 設置地圖中心點坐標
zoom: 13 // 設置地圖縮放級別
});
// 調用騰訊地圖的路徑規(guī)劃服務
var service = new qq.maps.DirectionService({
complete: function(result) {
var path = result.detail.path[0];
var polyline = new qq.maps.Polyline({
path: path,
strokeColor: '#3388ff',
strokeWeight: 5,
map: map
});
map.fitBounds(polyline.getBounds()); // 調整地圖視野以顯示整條路徑
}
});
// 設置起點和終點坐標
var start = new qq.maps.LatLng(39.915, 116.400);
var end = new qq.maps.LatLng(39.948, 116.415);
// 發(fā)起路徑規(guī)劃請求
service.search(start, end);
// 在地圖上標注起點和終點
new qq.maps.Marker({
position: start,
map: map
});
new qq.maps.Marker({
position: end,
map: map
});In the above code, we first create a map instance and set the display position and zoom level of the map. Then, initiate a path planning request by calling the search method of the qq.maps.DirectionService object. Finally, use the qq.maps.Polyline object to draw the path and mark the start and end points on the map.
Of course, in addition to the starting point and end point, you can also set more way points. Just add the coordinates sequentially to the array between the start and end points and modify your code accordingly.
It should be noted that when using Tencent Map API for route planning function, you need to use a valid API key and follow the usage specifications of Tencent Map API. Detailed usage methods and API documentation can be found on the Tencent Map Open Platform.
To sum up, using JavaScript and Tencent Maps, we can easily implement the map path planning function. By writing relevant code and introducing Tencent Map API into the page, we can obtain the best path and display it on the map. This is one of the very practical and important functions for map navigation applications.
Reference link:
Tencent Map Open Platform: http://lbs.qq.com/
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