从每个循环内运行函数（ajax.response）

我在尝试从每个循环内将数据传递给函数时遇到问题。我粗略地粘贴了下面的代码。基本上，函数A获取JSON数据，并将响应传递给函数B.然后，我想将每个响应项传递给functionC，以便将它们添加到数组中以使用Google地图绘制标记。任何帮助，将不胜感激。谢谢从每个循环内运行函数（ajax.response）

if(app == undefined) var app = {}; 

app.Application = function() { 

this.functionA = function(){ 
     var self = this; 

     var urlHash = location.hash; 
    accessToken = urlHash.split('=')[1]; 

    if (!accessToken) { 
     return false; 
    } else { 
     $.getJSON(instaAPIuri+"users/" + id + "/media/recent?access_token=" + accessToken + "&callback=?", self.functionB); 
    }; 

}; 

this.functionB = function(response){ 
    var self = this; 

    //Error codes 
    if (response.meta.code == 400) { 
     alert(response.meta.error_message); 
    } 

    //Create picture elements with basic information and image 
    $.each(response.data, function (i, item) { 

     //If item.location == null, while trying to get geolocation = error 
     if (item.location != null) { 
      functionC(item.location.latitude, item.location.longitude, item.images.thumbnail.url, item.user.username); 
     } 

    }); 

}; 

this.functionC = function(latitude, longitude, imgurl, user) { 
    var self = this; 
    var latLngPosition = new google.maps.LatLng(latitude, longitude); 

    //Create marker with custom assets 
    marker = new google.maps.Marker({ 
     position:latLngPosition, 
     icon: new google.maps.MarkerImage(imgurl, 
       new google.maps.Size(110, 110), 
       new google.maps.Point(0,0), 
       new google.maps.Point(32, 32)), 
     title: user, 
     map:map 
    }); 

    //Push in array to delete later 
    markersArray.push(marker); 
}; 

this.init(); 

}; 

$(function() { 

var app = new app.Application(); 

});

来源

2013-04-07 jjkilpatrick

也许尝试使用self.functionC而不是简单的functionC？ – 2013-04-07 21:42:06

我试过，但自我指的是在每个循环中的项目。 TypeError：self.functionC不是函数 – jjkilpatrick 2013-04-07 21:59:29

我设法修复它。必须将匿名回调函数传递给$ .getJSON。另外它会失败，因为我没有包含我的else语句 – jjkilpatrick 2013-04-07 23:43:29

函数B被$ .ajax（）设置对象的上下文调用。您可以使用$ .proxy（）将上下文更改为app.Application：

if(app == undefined) var app = {}; 

app.Application = function() { 

this.functionA = function(){ 
     var self = this; 

     var urlHash = location.hash; 
    accessToken = urlHash.split('=')[1]; 

    if (!accessToken) { 
     return false; 
    } else { 
     $.getJSON(instaAPIuri+"users/" + id + "/media/recent?access_token=" + accessToken + "&callback=?", $.proxy(self.functionB, self)); 
    }; 

}; 

this.functionB = function(response){ 
    var self = this; 

    //Error codes 
    if (response.meta.code == 400) { 
     alert(response.meta.error_message); 
    } 

    //Create picture elements with basic information and image 
    $.each(response.data, function (i, item) { 

     //If item.location == null, while trying to get geolocation = error 
     if (item.location != null) { 
      self.functionC(item.location.latitude, item.location.longitude, item.images.thumbnail.url, item.user.username); 
     } 

    }); 

}; 

this.functionC = function(latitude, longitude, imgurl, user) { 
    var self = this; 
    var latLngPosition = new google.maps.LatLng(latitude, longitude); 

    //Create marker with custom assets 
    marker = new google.maps.Marker({ 
     position:latLngPosition, 
     icon: new google.maps.MarkerImage(imgurl, 
       new google.maps.Size(110, 110), 
       new google.maps.Point(0,0), 
       new google.maps.Point(32, 32)), 
     title: user, 
     map:map 
    }); 

    //Push in array to delete later 
    markersArray.push(marker); 
}; 

this.init(); 

}; 

$(function() { 

var app = new app.Application(); 

});

来源

2013-04-08 00:55:40 mike

从每个循环内运行函数（ajax.response）

回答

相关问题