【探索HTML5第二弹03】走近地图应用的世界，看我们google地图可以看些什么！
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【探索HTML5第二弹03】走近地图应用的世界，看我们google地图可以看些什么！
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前言
昨天，前天都有一些事情了，自己的學習任務有所耽擱，但這不是主要原因，主要原因是昨天和前天都在搞canvas相關東西，這個東東怎么說呢？我是越搞越不能確定自己是否會用到，所以過程中有點糾結，然后慢慢時間就過去了。另外，我本來想重新學習HTML5的，但是發現在走之前的老路，重復的過程就沒必要了，我要從新思考一下最近的學習計劃。
最近開始接觸了google地圖應用，那確實叫一個不錯啊！！！可以完成很多事情了，這里用到的是GMaps.js，這里將其簡單說下吧！
進入Gmaps的世界
簡單應用
1 <!DOCTYPE html> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <title>獲取當前位置</title> 5 <style type="text/css"> 6 #map { width: 1000px; height: 600px; } 7 8 </style> 9 <script src="js/jquery-1.7.1.js" type="text/javascript"></script> 10 <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script> 11 <script src="js/gmaps.js" type="text/javascript"></script> 12 <script type="text/javascript"> 13 $(document).ready(function () { 14 /* 15 el 裝載地圖容器id 16 lat 緯度 17 lng 經度 18 */ 19 var map = new GMaps({ 20 el: '#map', 21 lat: 30.657358499999994, 22 lng: 104.049977 23 }); 24 }); 25 </script> 26 </head> 27 <body> 28 <div id="map"> 29 </div> 30 31 </body> 32 </html>這就是最簡單的應用了，代碼上有一定說明，而且官方的api也很詳細。
動態獲取當前位置
這里我們與HTML5的Geolocation結合使用，告訴用戶當前在哪里，是個不錯的選擇，借此就可以告訴其周圍的酒店什么之類的了。
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head><title>獲取當前位置</title><style type="text/css">#map { width: 1000px; height: 600px; }</style><script src="js/jquery-1.7.1.js" type="text/javascript"></script><script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script><script src="js/gmaps.js" type="text/javascript"></script><script type="text/javascript">$(document).ready(function () {/*el 裝載地圖容器idlat 緯度lng 經度該應用基于html5，并要求用戶共享自身位置*/navigator.geolocation.getCurrentPosition(function (position) {var map = new GMaps({el: '#map',lat: position.coords.latitude,lng: position.coords.longitude});});});</script> </head> <body><div id="map"></div></body> </html>參數說明
這里我們對代碼中的一些參數說明，具體見google map api
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head><title>獲取當前位置</title><style type="text/css">#map { width: 1000px; height: 600px; }</style><script src="js/jquery-1.7.1.js" type="text/javascript"></script><script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script><script src="js/gmaps.js" type="text/javascript"></script><script type="text/javascript">$(document).ready(function () {/*el 裝載地圖容器idlat 緯度lng 經度zoomControl 是否顯示縮放控制zoomControlOpt 縮放控制樣式定義panControl 是否顯示移動容器streetViewControl 是否顯示右上角的人，用途不明mapTypeControl 是否顯示衛星控制overviewMapControl 右下角預覽地圖*/var map = new GMaps({el: '#map',lat: 30.657358499999994,lng: 104.049977,zoomControl: true,zoomControlOpt: {style: 'BIG',position: 'TOP_RIGHT'},panControl: true,streetViewControl: true,mapTypeControl: true,overviewMapControl: true, });});</script> </head> <body><div id="map"></div></body> </html>事件回調
當鼠標在地圖上也會有一定事件的喲，不信試試！
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head><title></title><style type="text/css">#map { width: 1000px; height: 600px; }</style><script src="js/jquery-1.7.1.js" type="text/javascript"></script><script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script><script src="js/gmaps.js" type="text/javascript"></script><script type="text/javascript">$(document).ready(function () {/*el 裝載地圖容器idlat 緯度lng 經度zoomControl 是否顯示縮放控制zoomControlOpt 縮放控制樣式定義panControl 是否顯示移動容器streetViewControl 是否顯示右上角的人，用途不明mapTypeControl 是否顯示衛星控制overviewMapControl 右下角預覽地圖*//*支持以下事件bounds_changed None This event is fired when the viewport bounds have changed.center_changed None This event is fired when the map center property changes.click MouseEvent This event is fired when the user clicks on the map (but not when they click on a marker or infowindow).dblclick MouseEvent This event is fired when the user double-clicks on the map. Note that the click event will also fire, right before this one.drag None This event is repeatedly fired while the user drags the map.dragend None This event is fired when the user stops dragging the map.dragstart None This event is fired when the user starts dragging the map.heading_changed None This event is fired when the map heading property changes.idle None This event is fired when the map becomes idle after panning or zooming.maptypeid_changed None This event is fired when the mapTypeId property changes.mousemove MouseEvent This event is fired whenever the user's mouse moves over the map container.mouseout MouseEvent This event is fired when the user's mouse exits the map container.mouseover MouseEvent This event is fired when the user's mouse enters the map container.projection_changed None This event is fired when the projection has changed.resize None Developers should trigger this event on the map when the div changes size: google.maps.event.trigger(map, 'resize') .rightclick MouseEvent This event is fired when the DOM contextmenu event is fired on the map container.tilesloaded None This event is fired when the visible tiles have finished loading.tilt_changed None This event is fired when the map tilt property changes.zoom_changed None This event is fired when the map zoom property changes.其中e中包含了地圖相關信息*/var map = new GMaps({el: '#map',lat: 30.657358499999994,lng: 104.049977,zoomControl: true,zoomControlOpt: {style: 'BIG',position: 'TOP_RIGHT'},panControl: true,streetViewControl: true,mapTypeControl: true,overviewMapControl: true,mouseout: function (e) {var s = '';}});});</script> </head> <body><div id="map"></div></body> </html>為自己所在位置打上標記
打標記 1 <!DOCTYPE html> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <title></title> 5 <style type="text/css"> 6 #map { width: 600px; height: 400px; } 7 8 </style> 9 <script src="js/jquery-1.7.1.js" type="text/javascript"></script> 10 <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script> 11 <script src="js/gmaps.js" type="text/javascript"></script> 12 <script type="text/javascript"> 13 $(document).ready(function () { 14 /* 15 el 裝載地圖容器id 16 lat 緯度 17 lng 經度 18 zoomControl 是否顯示縮放控制 19 zoomControlOpt 縮放控制樣式定義 20 panControl 是否顯示移動容器 21 streetViewControl 是否顯示右上角的人，用途不明 22 mapTypeControl 是否顯示衛星控制 23 overviewMapControl 右下角預覽地圖 24 */ 25 26 /* 27 支持以下事件 28 bounds_changed None This event is fired when the viewport bounds have changed. 29 center_changed None This event is fired when the map center property changes. 30 click MouseEvent This event is fired when the user clicks on the map (but not when they click on a marker or infowindow). 31 dblclick MouseEvent This event is fired when the user double-clicks on the map. Note that the click event will also fire, right before this one. 32 drag None This event is repeatedly fired while the user drags the map. 33 dragend None This event is fired when the user stops dragging the map. 34 dragstart None This event is fired when the user starts dragging the map. 35 heading_changed None This event is fired when the map heading property changes. 36 idle None This event is fired when the map becomes idle after panning or zooming. 37 maptypeid_changed None This event is fired when the mapTypeId property changes. 38 mousemove MouseEvent This event is fired whenever the user's mouse moves over the map container. 39 mouseout MouseEvent This event is fired when the user's mouse exits the map container. 40 mouseover MouseEvent This event is fired when the user's mouse enters the map container. 41 projection_changed None This event is fired when the projection has changed. 42 resize None Developers should trigger this event on the map when the div changes size: google.maps.event.trigger(map, 'resize') . 43 rightclick MouseEvent This event is fired when the DOM contextmenu event is fired on the map container. 44 tilesloaded None This event is fired when the visible tiles have finished loading. 45 tilt_changed None This event is fired when the map tilt property changes. 46 zoom_changed None This event is fired when the map zoom property changes. 47 48 其中e中包含了地圖相關信息 49 50 */ 51 var map = new GMaps({ 52 el: '#map', 53 lat: 30.657358499999994, 54 lng: 104.049977, 55 zoomControl: true, 56 zoomControlOpt: { 57 style: 'BIG', 58 position: 'TOP_RIGHT' 59 }, 60 panControl: true, 61 streetViewControl: true, 62 mapTypeControl: true, 63 overviewMapControl: true, 64 mouseout: function (e) { 65 var s = ''; 66 } 67 }); 68 69 /* 70 建立標記需要調用addMarker方法 71 需要提供緯度經度，多余的信息可放置于details對象字面量里面，在事件調用時會用到 72 title為鼠標以上時提示 73 支持事件調用 74 infoWindow 中可使用html標簽點擊后可以看到內容（若是有點擊事件，會先調用） 75 infoWindow 具有以下事件closeclick, content_changed, domready, position_changed and zindex_changed 76 77 addMarkers 可一次調用多個 78 */ 79 map.addMarker({ 80 lat: 30.657358499999994, 81 lng: 104.049977, 82 title: '公司位置', 83 details: { 84 database_id: 42, 85 author: 'HPNeo' 86 87 }, 88 click: function (e) { 89 alert('click:' + e); 90 91 } 92 93 }) 94 95 map.addMarker({ 96 lat: 30.657358499999994, 97 lng: 104.059977, 98 title: '另一標記', 99 infoWindow: { 100 content: '<p>ddddddddd</p>', 101 closeclick: function (e) { 102 alert('關閉'); 103 } 104 }, 105 click: function (e) { 106 alert('click:' + e); 107 108 } 109 110 111 }); 112 113 114 }); 115 </script> 116 </head> 117 <body> 118 <div id="map"> 119 </div> 120 121 </body> 122 </html> 1 <!DOCTYPE html> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <title></title> 5 <style type="text/css"> 6 #map { width: 600px; height: 400px; } 7 8 </style> 9 <script src="js/jquery-1.7.1.js" type="text/javascript"></script> 10 <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script> 11 <script src="js/gmaps.js" type="text/javascript"></script> 12 <script type="text/javascript"> 13 $(document).ready(function () { 14 var map = new GMaps({ 15 el: '#map', 16 lat: 30.657358499999994, 17 lng: 104.049977 18 19 }); 20 //支持html5 21 GMaps.geolocate({ 22 success: function (position) { 23 var lat = position.coords.latitude, lon = position.coords.longitude; 24 map.setCenter(lat, lon); 25 map.addMarker({ 26 lat: 30.657358499999994, 27 lng: 104.049977, 28 title: '您的位置', 29 infoWindow: { 30 content: '您在這里' 31 } 32 }); 33 }, 34 error: function (error) { 35 alert('Geolocation failed: ' + error.message); 36 }, 37 not_supported: function () { 38 alert("Your browser does not support geolocation"); 39 }, 40 always: function () { 41 } 42 }); 43 }); 44 </script> 45 </head> 46 <body> 47 <div id="map"> 48 </div> 49 50 </body> 51 </html>位置檢索
我們當然可使用搜索技術了，google map api 果然強大！！！
1 <!DOCTYPE html> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <title></title> 5 <style type="text/css"> 6 #map { width: 600px; height: 400px; } 7 8 </style> 9 <script src="js/jquery-1.7.1.js" type="text/javascript"></script> 10 <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script> 11 <script src="js/gmaps.js" type="text/javascript"></script> 12 <script type="text/javascript"> 13 $(document).ready(function () { 14 15 var map = new GMaps({ 16 el: '#map', 17 lat: 30.657358499999994, 18 lng: 104.049977 19 }); 20 21 //支持html5 22 GMaps.geolocate({ 23 success: function (position) { 24 var lat = position.coords.latitude, lon = position.coords.longitude; 25 map.setCenter(lat, lon); 26 map.addMarker({ 27 lat: 30.657358499999994, 28 lng: 104.049977, 29 title: '您的位置', 30 infoWindow: { 31 content: '您在這里' 32 } 33 }); 34 }, 35 error: function (error) { 36 alert('Geolocation failed: ' + error.message); 37 }, 38 not_supported: function () { 39 alert("Your browser does not support geolocation"); 40 }, 41 always: function () { 42 } 43 }); 44 45 $('#address').change(function (e) { 46 var el = $(this); 47 GMaps.geocode({ 48 address: el.val(), 49 callback: function (r, s) { 50 if (s == 'OK') { 51 var latlng = r[0].geometry.location; 52 map.setCenter(latlng.lat(), latlng.lng()); 53 map.addMarker({ 54 lat: latlng.lat(), 55 lng: latlng.lng(), 56 title: el.val() 57 }); 58 } 59 } 60 }); 61 }); 62 63 64 }); 65 </script> 66 </head> 67 <body> 68 <input type="text" value="請輸入地址" id="address" /> 69 <div id="map"> 70 </div> 71 72 </body> 73 </html>在地圖上畫圈圈！
這個功能真是貼心！公安局或者其他系統，在不同地點會有地區作案數預警信息，更具此功能可以將作案頻繁的區域圈起來，重點提示！
畫區域 1 <!DOCTYPE html> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <title></title> 5 <style type="text/css"> 6 #map { width: 600px; height: 400px; } 7 8 </style> 9 <script src="js/jquery-1.7.1.js" type="text/javascript"></script> 10 <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script> 11 <script src="js/gmaps.js" type="text/javascript"></script> 12 <script type="text/javascript"> 13 $(document).ready(function () { 14 var path = []; 15 16 var map = new GMaps({ 17 el: '#map', 18 lat: 30.657358499999994, 19 lng: 104.049977 20 }); 21 22 //支持html5 23 GMaps.geolocate({ 24 success: function (position) { 25 var lat = position.coords.latitude, lon = position.coords.longitude; 26 var tmp = []; 27 tmp.push(lat); 28 tmp.push(lon); 29 path.push(tmp); 30 map.setCenter(lat, lon); 31 map.addMarker({ 32 lat: 30.657358499999994, 33 lng: 104.049977, 34 title: '您的位置', 35 infoWindow: { 36 content: '您在這里' 37 } 38 }); 39 }, 40 error: function (error) { 41 alert('Geolocation failed: ' + error.message); 42 }, 43 not_supported: function () { 44 alert("Your browser does not support geolocation"); 45 }, 46 always: function () { 47 } 48 }); 49 50 $('#address').change(function (e) { 51 var el = $(this); 52 GMaps.geocode({ 53 address: el.val(), 54 callback: function (r, s) { 55 if (s == 'OK') { 56 var latlng = r[0].geometry.location; 57 map.setCenter(latlng.lat(), latlng.lng()); 58 map.addMarker({ 59 lat: latlng.lat(), 60 lng: latlng.lng(), 61 title: el.val() 62 }); 63 var tmp = []; 64 tmp.push(latlng.lat()); 65 tmp.push(latlng.lng()); 66 path.push(tmp); 67 68 map.drawPolyline({ 69 path: path, 70 strokeColor: 'red', 71 strokeOpacity: 0.6, 72 strokeWeight: 2 73 }); 74 75 76 } 77 } 78 }); 79 }); 80 81 82 }); 83 </script> 84 </head> 85 <body> 86 <input type="text" value="請輸入地址" id="address" /> 87 <div id="map"> 88 </div> 89 90 </body> 91 </html>區域高亮顯示
我們可以指定某個區域，比如我們的學校，然后在上面浮動一個div寫上學校介紹，可以與css共同使用：
1 <!DOCTYPE html> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <title></title> 5 <style type="text/css"> 6 #map { width: 600px; height: 400px; } 7 8 </style> 9 <script src="js/jquery-1.7.1.js" type="text/javascript"></script> 10 <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script> 11 <script src="js/gmaps.js" type="text/javascript"></script> 12 <script type="text/javascript"> 13 $(document).ready(function () { 14 var path = []; 15 16 var map = new GMaps({ 17 el: '#map', 18 lat: 30.657358499999994, 19 lng: 104.049977 20 }); 21 22 //支持html5 23 GMaps.geolocate({ 24 success: function (position) { 25 var lat = position.coords.latitude, lng = position.coords.longitude; 26 var tmp = []; 27 map.setCenter(lat, lng); 28 map.drawOverlay({ 29 lat: lat, 30 lng: lng, 31 layer: 'overlayLayer', 32 content: '<div style="border: 1px solid black; color: red;">高亮哦</div>' 33 }); 34 }, 35 error: function (error) { 36 alert('Geolocation failed: ' + error.message); 37 }, 38 not_supported: function () { 39 alert("Your browser does not support geolocation"); 40 }, 41 always: function () { 42 } 43 }); 44 45 46 }); 47 </script> 48 </head> 49 <body> 50 <input type="text" value="請輸入地址" id="address" /> 51 <div id="map"> 52 </div> 53 54 </body> 55 </html>右鍵菜單
我們還可以在地圖上搞菜單，搞事件哦！！！
右鍵菜單 1 <!DOCTYPE html> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <title></title> 5 <style type="text/css"> 6 #map { width: 600px; height: 400px; } 7 8 </style> 9 <script src="js/jquery-1.7.1.js" type="text/javascript"></script> 10 <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script> 11 <script src="js/gmaps.js" type="text/javascript"></script> 12 <script type="text/javascript"> 13 $(document).ready(function () { 14 var path = []; 15 16 var map = new GMaps({ 17 el: '#map', 18 lat: 30.657358499999994, 19 lng: 104.049977 20 }); 21 22 //支持html5 23 GMaps.geolocate({ 24 success: function (position) { 25 var lat = position.coords.latitude, lon = position.coords.longitude; 26 var tmp = []; 27 tmp.push(lat); 28 tmp.push(lon); 29 path.push(tmp); 30 map.setCenter(lat, lon); 31 map.addMarker({ 32 lat: 30.657358499999994, 33 lng: 104.049977, 34 title: '您的位置', 35 infoWindow: { 36 content: '您在這里' 37 } 38 }); 39 }, 40 error: function (error) { 41 alert('Geolocation failed: ' + error.message); 42 }, 43 not_supported: function () { 44 alert("Your browser does not support geolocation"); 45 }, 46 always: function () { 47 } 48 }); 49 50 map.setContextMenu({ 51 control: 'map', 52 options: [{ 53 title: '增加錨點', 54 name: 'addMarker', 55 action: function (e) { 56 this.addMarker({ 57 lat: e.latLng.lat(), 58 lng: e.latLng.lng(), 59 title: '新增錨點' 60 }); 61 this.hideContextMenu(); 62 alert('彈出菜單執行操作'); 63 } 64 }] 65 66 }); 67 }); 68 </script> 69 </head> 70 <body> 71 <input type="text" value="請輸入地址" id="address" /> 72 <div id="map"> 73 </div> 74 75 </body> 76 </html>錨點群
最后，我們來看一個非常有用的功能
1 <!DOCTYPE html> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <title></title> 5 <style type="text/css"> 6 #map { width: 600px; height: 400px; } 7 8 </style> 9 <script src="js/jquery-1.7.1.js" type="text/javascript"></script> 10 <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script> 11 <script src="js/gmaps.js" type="text/javascript"></script> 12 <script type="text/javascript" src="http://google-maps-utility-library-v3.googlecode.com/svn/tags/markerclusterer/1.0/src/markerclusterer.js"></script> 13 <script type="text/javascript"> 14 $(document).ready(function () { 15 var path = []; 16 var map = new GMaps({ 17 div: '#map', 18 lat: 30.657358499999994, 19 lng: 104.049977, 20 markerClusterer: function (map) { 21 return new MarkerClusterer(map); 22 } 23 }); 24 var lat_span = 30.657358499999994; 25 var lng_span = 104.049977; 26 for (var i = 0; i < 100; i++) { 27 var latitude = Math.random()*0.01 + 30.657358499999994; 28 var longitude = Math.random()*0.01 + 104.049977; 29 30 map.addMarker({ 31 lat: latitude, 32 lng: longitude, 33 title: 'Marker #' + i 34 }); 35 } 36 }); 37 </script> 38 </head> 39 <body> 40 <input type="text" value="請輸入地址" id="address" /> 41 <div id="map"> 42 </div> 43 44 </body> 45 </html>大家看到了，根據此功能可以完成復雜的應用哦！！！
結語
好了，今天就到這了，經過這次的學習，我想關于地圖的應用應該都不在話下了。需要源碼直接搜索GMaps.js里面去看吧，我這個都是抄襲哦。
總結
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