javascript - jQuery 多层 JSON

Question

晚上好，我正在处理一个 JSON，我必须解析它才能得到我需要的东西。它看起来像这样:

{
    "0":{"ID":"282","WarrSalePrice":"1.00"}
    ,"1":{"ID":"283","WarrSalePrice":"2.00"}
    ,"2":{"ID":"284","WarrSalePrice":"3.00"}
    ,"3":{"ID":"285","WarrSalePrice":"4.00"}
    ,"Totals":{"RowCount":"4","WarrSalePrice":"10.00"}
}

我使用以下代码来遍历上面的 JSON。

jQuery.each(data, function(index, value){
    alert(value['WarrSalePrice']);    //This get the individual sales prices
});

问题是我需要获取 RowCount 和 TotalSalesPrice。我的逻辑是没有完成它。它告诉我，我的值如果为第五(总计行)“未定义”。我还需要在调用 jQuery.each 之前读取 RowCount 值。因为如果 RowCount == 0，则无需执行 jQuery.each。请有人给我指出正确的方向。

祝一切顺利，乔治

Answer 1

https://jsfiddle.net/mvpb1k1r/

只需检查它是否未定义。

var data = {
    "0":{"ID":"282","WarrSalePrice":"1.00"}
    ,"1":{"ID":"283","WarrSalePrice":"2.00"}
    ,"2":{"ID":"284","WarrSalePrice":"3.00"}
    ,"3":{"ID":"285","WarrSalePrice":"4.00"}
    ,"Totals":{"RowCount":"4","WarrSalePrice":"10.00"}
}

jQuery.each(data, function(index, value){
    if(typeof value['WarrSalePrice'] != "undefined") {
    console.log("WarrSalePrice: " + value['WarrSalePrice']);    //This get the individual sales prices
    }

  if(typeof value['RowCount'] != "undefined") {
    console.log("RowCount: " + value['RowCount']);    //This get the individual sales prices
    }
});