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我想設置一個變量來保存緯度和經度變量在Google地圖上繪圖(我試圖讓它在稍後添加到集合中)。我正在運行控制檯長時間測試,發現我的函數中的變量是設置座標。我將如何能夠這樣做? (對不起,我還是新的JavaScript和Backbone.js的)骨幹Js - 設置地理位置變量[未定義變量]
var Area = Backbone.View.extend({
el: '#load',
initialize: function(){
//this.getLocation();
this.canvasId = 'map';
this.area = '<h2>Area of BAC</h2><div id="'+this.canvasId+'"></div>';
},
render: function(){
this.$el.html(this.area);
this.getLocation();
console.log(this.lat+' '+this.lng+' - Confirmed');
//this.createMap(this.lat, this.lng);
//google.maps.event.addDomListener(window, 'load', this.createMap);
},
createMap: function(lat, lng){
//var mlat = lat;
//var mlong = lng;
//alert(lat+' '+lng);
var mapOptions = {
center: new google.maps.LatLng(40.7430473, -74.1777488),
//center: new google.maps.LatLng(mlat, mlng),
zoom: 15
}
var map = new google.maps.Map(document.getElementById(this.canvasId), mapOptions);
},
getLocation: function(){
console.log('Test - getGeolocation');
if(navigator.geolocation){
//navigator.geolocation.getCurrentPosition(this.setLatLng);
navigator.geolocation.getCurrentPosition(this.setLatLng);
}else{
alert('Either you have no internet connection or your browser is not supported');
}
},
setLatLng: function(position){
console.log('Test - setLatLng');
this.lat = position.coords.latitude;
console.log('Test - setLatLng-lat');
this.lng = position.coords.longitude;
console.log('Test - setLatLng-lng');
console.log(this.lat+' '+this.lng);
},
throwErr: function(){
alert('Cannot get coords');
}
});
我的控制檯日誌:
Test - getGeolocation Area.js:32
undefined undefined - Confirmed Area.js:13
Test - setLatLng Area.js:42
Test - setLatLng-lat Area.js:44
Test - setLatLng-lng Area.js:46
19.7180872 -89.0860836