主干 - 地理位置

我是一位新的骨干用户，并开始在其中实施Google地图。我在View对象中设置了它。我工作得很好，但是当我转到另一个页面（带有导航器对象的模板）并返回到Google Maps的页面时，当前位置不会在Google Map上销售。主干 - 地理位置

下面我的代码从我的浏览

DFM.MapView = Backbone.View.extend({ 

el: $("#content"), 

template: $("#rankings_template").html(), 

// Initialiseren 
initialize: function(){ 

    self = this; 
    this.render(); 

    var location_destiny = new google.maps.LatLng(52.476716,4.799623); 

    var map = new google.maps.Map(document.getElementById('google_maps'), { 
     center: location_destiny, 
     zoom: 13, 
     mapTypeId: google.maps.MapTypeId.ROADMAP, 
     panControl: false, 
     zoomControl: false, 
     mapTypeControl: false, 
     scaleControl: false, 
     streetViewControl: false, 
     overviewMapControl: false 

    }); 

    if(navigator.geolocation){ 

     navigator.geolocation.watchPosition(update_user_location, error_handler, { 
      enableHighAccuracy: true, 
      frequency: 3000 
     }); 

    } else { 
     console.error('Geolocation: 0 - Geotracking not available'); 
    } 

    // Update user location 
    function update_user_location(position){ 
     location_user = new google.maps.LatLng(52.474716,4.798623); 

     var marker_user = new google.maps.Marker({ 
      title: 'Gebruiker', 
      position: location_user, 
      map: map, 
      draggable: true, 
     }); 
    } 

    // Error handler 
    function error_handler(error){ 
     console.error('Geolocation: ' + error.code + ' - ' + error.message); 
    } 

    var marker_destiny = new google.maps.Marker({ 
     title: 'Bestemming', 
     position: location_destiny, 
     map: map, 
     draggable: true, 
    }); 
}, 

render: function(){ 

    this.$el.html(_.template(this.template)); 

    return this; 
}

}）;

来源

2013-03-20 geertbeskers

是初始化函数被调用firsttime您访问的页面和第二次您访问的页面？ this.render（）需要像这样与你的模型绑定this.model.bind（'reset'，this.render）; – powerfade917 2013-03-23 18:44:58