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基本調用
- <!DOCTYPE html>
- <html>
- <head>
- <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
- <style type="text/css">
- html { height: 100% }
- body { height: 100%; margin: 0px; padding: 0px }
- #map_canvas { height: 100% }
- </style>
- <script type="text/javascript"
- src="https://maps.google.com/maps/api/js?sensor=true">
- </script>
- <script type="text/javascript">
- function initialize() {
- var latlng = new google.maps.LatLng(-34.397, 150.644);
- var myOptions = {
- zoom: 8,
- center: latlng,
- mapTypeId: google.maps.MapTypeId.ROADMAP
- };
- var map = new google.maps.Map(document.getElementById("map_canvas"),
- myOptions);
- }
- </script>
- </head>
- <body onload="initialize()">
- <div id="map_canvas" style="width:100%; height:100%"></div>
- </body>
- </html>
基于html5的稍微復雜的Goolge Map 調用
- <!doctype html>
- <html>
- <head>
- <meta charset="utf-8">
- <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
- <style type="text/css">
- html { height:800px; width:480px; }
- body { height: 100%; margin: 0px; padding: 0px }
- #map_canvas { height: 100% }
- #metaDataTable { position:absolute; top:30px; left:0px; z-index:1000;}
- </style>
- <title>html5_Geolocation</title>
- <script type="text/javascript"
- src="https://maps.google.com/maps/api/js?sensor=false">
- </script>
- </head>
- <body>
- <div id="metaDataTable">
- <h2> Html5 Geolocation Distance Tracker</h2>
- <p id="status"> Html5 Geolocation is<strong> not</strong> suppert your browser!!!</p>
- <h3>Current Position:</h3>
- <table border="1">
- <tr>
- <td width=40 scope="col">緯度</td>
- <td wisth=114 id="latitude">?</td>
- </tr>
- <tr>
- <td width=40 scope="col">經度</td>
- <td wisth=114 id="longitude">?</td>
- </tr>
- <tr>
- <td width=40 scope="col">海拔</td>
- <td wisth=114 id="accuracy">?</td>
- </tr>
- <tr>
- <td width=40 scope="col">Last TimeStamp</td>
- <td wisth=114 id="timestamp">?</td>
- </tr>
- </table>
- <h5 id="currDist"> Current distance traveled:0.0KM</h5>
- <h5 id="totalDist">Total distance traveled:0.0KM</h5>
- </div>
- <script>
- var totalDistance = 0.0;
- var lastLat;
- var lastLong;
- var latitude;
- var longitude;
- /*function getGeolacation(){
- if(navigator.geolocation){
- alert("Support the html5 Geolacation API");
- navigator.geolocation.getCurrentPosition(updateLocation);
- }
- }*/
- function updateLocation(position){
- latitude = position.coords.latitude;
- longitude = position.coords.longitude;
- var accuracy = position.coords.accuracy;
- var timestamp = position.timestamp;
- document.getElementById("latitude").innerHTML =latitude ;
- document.getElementById("longitude").innerHTML = longitude;
- document.getElementById("accuracy").innerHTML = accuracy;
- document.getElementById("timestamp").innerHTML = timestamp;
- if(accuracy >= 500){
- updateStatus("need more accure vslues to calculate distance.");
- return;
- }
- //計算距離
- if((lastLat != null)&&(lastLong != null)){
- var CurrentDistance = distance(latitude,longitude,lastLat,lastLong);
- document.getElementById("currDist").innerHTML = "Current distance traveled"+CurrentDistance+"KM";
- totalDistance += CurrentDistance;
- document.getElementById("totalDist").innerHTML="=Total distance traveled "+totalDistance+"KM";
- }
- lastLat = latitude;
- lastLong = longitude;
- updateStatus("Loacation Successfully uodated!!!");
- initialize(latitude,longitude);
- }
- function handleLocationError(error){
- switch(error.code){
- case 0 :
- uodateStatus("There was an error while retrieving your Location "+error.message);
- break;
- case 1 :
- uodateStatus("the user prevented this page from your Location "+error.message);
- break;
- case 2 :
- uodateStatus("the browser was unable to determine your Location "+error.message);
- break;
- case 3 :
- uodateStatus("the browser timed out before retrieving your Location "+error.message);
- break;
- }
- }
- function toRadians(degree){
- return degree = Math.PI / 180;
- }
- function distance(latitude1, longitude1, latitude2, longitude2){
- var R = 6371;
- var deltatidude = toRadians(latitude2- latitude1);
- var dellongitude = toRadians(longitude2 - longitude1);
- latitude1 = toRadians(latitude1);
- latitude2 = toRadians(latitude2);
- var a = Math.sin(deltalatitude/2)*Math.cos(deltalatitude/2)*Math.cos(latitude1)*Math.cos(latitude2)*Math.sin(dellongitude/2)*Math.sin(dellongitude/2);
- var c= 2*Math.atan2(Math.sqrt(a),Math.sqrt(1-a));
- var d = R*c;
- return d;
- }
- //R是地球的半徑,單位是KM
- function updateStatus(message){
- document.getElementById("status").innerHTML = message;
- }
- function loadDemo(){
- if(navigator.geolocation){
- updateStatus("your browser is support html5 geolacation");
- navigator.geolocation.watchPosition(updateLocation,handleLocationError,{maximumAge:20000});
- }
- }
- function initialize(la,longi) {
- var latlng = new google.maps.LatLng(la, longi);
- var div = document.createElement("div");
- var str = "<b>我的當前位置</b>";
- var myOptions = {
- zoom: 18,
- center: latlng,
- mapTypeId: google.maps.MapTypeId.TERRAIN
- };
- var map = new google.maps.Map(document.getElementById("map_canvas"),
- myOptions);
- var marker = new google.maps.Marker({
- position:latlng,
- map:map,
- title:"My Location"
- });
- }
- window.addEventListener("load",loadDemo, true);
- </script>
- <div id="map_canvas" style="width:100%; height:100%"></div>
- </body>
- </html>
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