使用 node.js 遍历 JSON [英] Looping through JSON with node.js

问题描述

我有一个需要迭代的 JSON 文件，如下所示...

I have a JSON file which I need to iterate over, as shown below...

{
    "device_id": "8020",
    "data": [{
        "Timestamp": "04-29-11 05:22:39 pm",
        "Start_Value":  0.02,
        "Abstract": 18.60,
        "Editor": 65.20
    }, {
        "Timestamp": "04-29-11 04:22:39 pm",
        "End_Value":  22.22,
        "Text": 8.65,
        "Common": 1.10,
        "Editable": "true",
        "Insert": 6.0
    }]
}

数据中的键并不总是相同的(我刚刚使用了示例，有 20 个不同的键)，因此，我无法设置我的脚本来静态引用它们以获取值.

The keys in data will not always be the same (i've just used examples, there are 20 different keys), and as such, I cannot set up my script to statically reference them to get the values.

否则我可以声明

var value1 = json.data.Timestamp;
var value2 = json.data.Start_Value;
var value3 = json.data.Abstract;
etc

过去我在数据节点上使用了一个简单的 foreach 循环......

In the past i've used a simple foreach loop on the data node...

foreach ($json->data as $key => $val) {
    switch($key) {
        case 'Timestamp':
            //do this;
        case: 'Start_Value':
            //do this
    }
}

但是不想阻塞脚本.有什么想法吗?

But don't want to block the script. Any ideas?

推荐答案

您可以通过以下方式遍历 JavaScript 对象:

You can iterate through JavaScript objects this way:

for(var attributename in myobject){
    console.log(attributename+": "+myobject[attributename]);
}

myobject 可能是你的 json.data

myobject could be your json.data

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