javascript - 如何引用此 JSON 中的特定字段？

Question

试图引用此 JSON 中的字段，但它与我一直在查看的示例中的任何内容都不一样，所以我有点难过。

我想知道如何引用“HOW DO I REFERENCE THIS?”末尾的字段。感谢您的帮助。

var JSON = 
{ "employees": {
    "name" : "david",
    "car" : "audi"
     },
     {
     "name" : "jimmy",
     "car" : "VW"
     },

   "customers" : {
     "name" : "philip",
     "purchase": "cabbage"
     },
     {
     "name" : "Helen",
     "purchase": "HOW DO I REFERENCE THIS?"
     }
}


var x = "HOW DO I REFERENCE THIS?";

Answer 1

使用正确的语法，我相信你想要这样:

var JSON = {
    "employees": [
    {
        "name": "david",
        "car": "audi"
    },
    {
        "name": "jimmy",
        "car": "VW"
    }],

    "customers": [
    {
        "name": "philip",
        "purchase": "cabbage"
    },
    {
        "name": "Helen",
        "purchase": "HOW DO I REFERENCE THIS?"
    }]
}

您可以通过以下方式获得购买:

for (var i in JSON.customers)
{
    var customer = JSON.customers[i];

    var value = customer.purchase; // cabbage, HOW DO I...
}