Javascript 使用嵌入式数组迭代JSON

我有以下JSON：

[
    {
        "id": "1",
        "selected": true,
        "question": "Which of the following does <b><i>not</i></b> describe Washington’s location?",
        "answers": {
            "A": {
                "selector": "A",
                "answerText": "It is in the northwest corner of the United States.",
                "correct": "N"
            },
            "B": {
                "selector": "B",
                "answerText": "The Pacific Ocean provides the western border.",
                "correct": "N"
            },
            "C": {
                "selector": "C",
                "answerText": "It is north of Oregon and west of Idaho.</span>",
                "correct": "N"
            },
            "D": {
                "selector": "D",
                "answerText": "A natural boundary can be created by a river.",
                "correct": "Y"
            }
        }
    },
    {
        "id": "2",
        "selected": true,
        "question": "Which of the following best describes a spatial pattern in Washington?",
        "answers": {
            "A": {
                "selector": "A",
                "answerText": "Most people settled along rivers and water in the fertile valleys.",
                "correct": "Y"
            },
            "B": {
                "selector": "B",
                "answerText": "Most people settled high in the mountains to protect themselves from their enemies.",
                "correct": "N"
            },
            "C": {
                "selector": "C",
                "answerText": "Most people settled at the base of the Rocky Mountains. They couldn’t travel any further.",
                "correct": "N"
            },
            "D": {
                "selector": "D",
                "answerText": "Most people settled along the Pacific Rim because it was a good place to trade.",
                "correct": "N"
            }
        }
    }
]

[
{
“id”：“1”，
“选定”：正确，
“问题”：“以下哪项不描述华盛顿的位置？”，
“答案”：{
“A”：{
“选择器”：“A”，
“答案文本”：“它位于美国西北角。”，
“正确”：“N”
},
“B”：{
“选择器”：“B”，
“答案文本”：“太平洋提供了西部边界。”，
“正确”：“N”
},
“C”：{
“选择器”：“C”，
“答案文本”：“它位于俄勒冈州北部，爱达荷州西部。”，
“正确”：“N”
},
“D”：{
“选择器”：“D”，
“answerText”：“河流可以创造自然边界。”，
“正确”：“Y”
}
}
},
{
“id”：“2”，
“选定”：正确，
“问题”：“以下哪项最能描述华盛顿的空间格局？”，
“答案”：{
“A”：{
“选择器”：“A”，
“答案文本”：“大多数人定居在肥沃的山谷中的河流和水域。”，
“正确”：“Y”
},
“B”：{
“选择器”：“B”，
“答案文字”：“大多数人定居在高山上是为了保护自己免受敌人的伤害。”，
“正确”：“N”
},
“C”：{
“选择器”：“C”，
“答案文字”：“大多数人定居在落基山脉的底部。他们不能再往前走了。”，
“正确”：“N”
},
“D”：{
“选择器”：“D”，
“答案文本”：“大多数人在环太平洋地区定居，因为那里是一个贸易的好地方。”，
“正确”：“N”
}
}
}
]

---

迭代对象的最佳方式是什么？我应该使用jquery还是纯javascript？任何示例都会很好…

我特别喜欢

$.parseJSON

，如前所述和。

将JSON字符串解析为对象使用

JSON.parse(str);

要遍历数组，请使用

for(var i=0, l=arr.length; i<l; ++i) {
    // Here use arr[i]
}

for(var i in obj) {
    if(obj.hasOwnProperty(i)) {
        // Here use obj[i]
    }
}