jquery - 如何使用 jquery 迭代 json 消息的嵌套数组？

Question

如何使用 jquery 迭代此 json 消息的嵌套数组(即“orders”)？

[{"Type":"X","Symbol":"AAP","BidPrice":17.0,
"OfferPrice":0.0,"BidQty":9,"OfferQty":0,"LastTradePrice":17.0,
"orders":[{"BidQuantity":"12","BidPrice":"17.0","OfferQuantity":"","OfferPrice":""},
"BidQuantity":"5","BidPrice":"17.0","OfferQuantity":"","OfferPrice":""},
"BidQuantity":"5","BidPrice":"17.0","OfferQuantity":"","OfferPrice":""},
"BidQuantity":"2","BidPrice":"16.0","OfferQuantity":"","OfferPrice":""}]}

我尝试了以下方法，但不起作用

$.each(data, function(i, item) {
   $('#last').text(data[i].LastTradePrice);

   var ords = item.orders;  
   $.each(ords, function(x,ork) {
    alert(ork[x].BidPrice);
   });                                      
});

我在 Firefox 控制台中收到以下错误

ork[x] 未定义

Answer 1

您的 json 在 "orders:[ 处无效，应该是 "orders":[，您还忘记将每个对象括在 orders 数组与 }。无论如何，下面是更正后的 JSON。

无论如何，您不需要使用 jquery 来完成这样的事情:

for(var i = 0; i < inputs.length; i++) {
    alert(inputs[i].BidPrice);
}

Orders 是数组类型，我严重怀疑你需要使用 jQuery，但无论如何: http://jsfiddle.net/kyWGT/14/

var data =     
   [{"Type":"X","Symbol":"AAP","BidPrice":17.0,
   "OfferPrice":0.0,"BidQty":9,"OfferQty":0,"LastTradePrice":17.0,
   "orders":[{"BidQuantity":"12","BidPrice":"17.0","OfferQuantity":"","OfferPrice":""},
             {"BidQuantity":"5","BidPrice":"17.0","OfferQuantity":"","OfferPrice":""},
             {"BidQuantity":"5","BidPrice":"17.0","OfferQuantity":"","OfferPrice":""}, {"BidQuantity":"2","BidPrice":"16.0","OfferQuantity":"","OfferPrice":""}]
   }];

$.each(data, function(i, item) {
   $('#last').text(data[i].LastTradePrice);

   var ords = item.orders;  
    $.each(ords, function(i, ork) {
        alert(ork.BidPrice);
    });
});​