开发谷歌地图首先就是要申请一个keyID,这个就是最关键的。
https://developers.google.com/maps/web/这个网址就可以申请，但是我当时由于网不行我是翻墙申请的（蓝灯）
申请以后在页面引入谷歌地图时把js那里的key换成你申请的即可。下面奉上原代码
<!DOCTYPE html><html> <head> <meta name="viewport" content="initial-scale=1.0, user-scalable=no"> <meta charset="utf-8"> <title>谷歌地图路线规划</title> <style> html, body { height: 100%; margin: 0; padding: 0; } #map { height: 100%; } #warnings-panel { width: 100%; height:10%; text-align: center; }#floating-panel { position: absolute; top: 10px; left: 25%; z-index: 5; background-color: #fff; padding: 5px; border: 1px solid #999; text-align: center; font-family: 'Roboto','sans-serif'; line-height: 30px; padding-left: 10px;} </style> <script src="https://maps.googleapis.com/maps/api/js?key=换成你申请的key&callback=initMap" async defer></script> </head> <body> <div id="floating-panel"> <b>从哪走: </b> <input type="text" id="start"> <b>去哪里: </b> <input type="text" id="end"> </div> <div id="map"></div> <div id="warnings-panel"></div> <script>function initMap() { var markerArray = []; // Instantiate a directions service. var directionsService = new google.maps.DirectionsService; // Create a map and center it on Manhattan. var map = new google.maps.Map(document.getElementById('map'), { zoom: 13, center: {lat: 39.9, lng: 116.4} }); // Create a renderer for directions and bind it to the map. var directionsDisplay = new google.maps.DirectionsRenderer({map: map}); // Instantiate an info window to hold step text. var stepDisplay = new google.maps.InfoWindow; // Display the route between the initial start and end selections. calculateAndDisplayRoute( directionsDisplay, directionsService, markerArray, stepDisplay, map); // Listen to change events from the start and end lists. var onChangeHandler = function() { calculateAndDisplayRoute( directionsDisplay, directionsService, markerArray, stepDisplay, map); }; document.getElementById('start').addEventListener('change', onChangeHandler); document.getElementById('end').addEventListener('change', onChangeHandler);}function calculateAndDisplayRoute(directionsDisplay, directionsService, markerArray, stepDisplay, map) { // First, remove any existing markers from the map. for (var i = 0; i < markerArray.length; i++) { markerArray[i].setMap(null); } // Retrieve the start and end locations and create a DirectionsRequest using // WALKING directions. directionsService.route({ origin: document.getElementById('start').value, destination: document.getElementById('end').value, travelMode: google.maps.TravelMode.WALKING }, function(response, status) { // Route the directions and pass the response to a function to create // markers for each step. if (status === google.maps.DirectionsStatus.OK) { document.getElementById('warnings-panel').innerHTML = '<b>' + response.routes[0].warnings + '</b>'; directionsDisplay.setDirections(response); showSteps(response, markerArray, stepDisplay, map); } else { window.alert('Directions request failed due to ' + status); } });}function showSteps(directionResult, markerArray, stepDisplay, map) { // For each step, place a marker, and add the text to the marker's infowindow. // Also attach the marker to an array so we can keep track of it and remove it // when calculating new routes. var myRoute = directionResult.routes[0].legs[0]; for (var i = 0; i < myRoute.steps.length; i++) { var marker = markerArray[i] = markerArray[i] || new google.maps.Marker; marker.setMap(map); marker.setPosition(myRoute.steps[i].start_location); attachInstructionText( stepDisplay, marker, myRoute.steps[i].instructions, map); }}function attachInstructionText(stepDisplay, marker, text, map) { google.maps.event.addListener(marker, 'click', function() { // Open an info window when the marker is clicked on, containing the text // of the step. stepDisplay.setContent(text); stepDisplay.open(map, marker); });} </script> </body></html>
新闻热点
疑难解答
