如何把json数据中指定的list内容读取出来？

[fangsky]

json数据如下。

{
	"Type": "RESPONSE",
	"From": "",
	"To": "",
	"Body": {
		"Operation": {
			"@name": "Get",
			"AlarmInfo": [{
				"DeviceModel": "HD-4CT",
				"DeviceID": "7",
				"AlarmDesc": "机箱门被打开",
				"AlarmType": "6",
				"OccurTime": "100304",
				"OccurDate": "20190919"
			}, {
				"DeviceModel": "HD-4CT",
				"DeviceID": "7",
				"AlarmDesc": "机箱门关闭",
				"AlarmType": "6",
				"OccurTime": "100351",
				"OccurDate": "20190919"
			}, {
				"DeviceModel": "HD-4CT",
				"DeviceID": "7",
				"AlarmDesc": "机箱门被打开",
				"AlarmType": "6",
				"OccurTime": "100403",
				"OccurDate": "20190919"
			}, {
				"DeviceModel": "HD-4CT",
				"DeviceID": "7",
				"AlarmDesc": "机箱门关闭",
				"AlarmType": "6",
				"OccurTime": "100420",
				"OccurDate": "20190919"
			}]
		}
	},
	"Seq": "20190919164121000001"
}

请问下，如何把上面的这个json中的AlarmInfo部分取出来，保存到新的json中，如下，谢谢！

newjson=[{
				"DeviceModel": "HD-4CT",
				"DeviceID": "7",
				"AlarmDesc": "机箱门被打开",
				"AlarmType": "6",
				"OccurTime": "100304",
				"OccurDate": "20190919"
			}, {
				"DeviceModel": "HD-4CT",
				"DeviceID": "7",
				"AlarmDesc": "机箱门关闭",
				"AlarmType": "6",
				"OccurTime": "100351",
				"OccurDate": "20190919"
			}, {
				"DeviceModel": "HD-4CT",
				"DeviceID": "7",
				"AlarmDesc": "机箱门被打开",
				"AlarmType": "6",
				"OccurTime": "100403",
				"OccurDate": "20190919"
			}, {
				"DeviceModel": "HD-4CT",
				"DeviceID": "7",
				"AlarmDesc": "机箱门关闭",
				"AlarmType": "6",
				"OccurTime": "100420",
				"OccurDate": "20190919"
			}]

这样的原因是因为用了datatables表格插件，后端返回json数据，然后显示在表格上。测试用newjson可以，所以想把原始的json提取处理成newjson。
var tableww = $('#example1').DataTable( {
data:newjson,
"columns": [
{ "data": "DeviceModel" },
{ "data": "DeviceID" },
{ "data": "AlarmDesc" },
{ "data": "AlarmType" },
{ "data": "OccurTime" },
{ "data": "OccurDate" }
]
} );

[jio可]

源json = data data.Body.Operation.AlarmInfo console.log(data.Body.Operation.AlarmInfo)

[cn00439805]

let obj = {
    "Type": "RESPONSE",
    "From": "",
    "To": "",
    "Body": {
        "Operation": {
            "@name": "Get",
            "AlarmInfo": [{
                "DeviceModel": "HD-4CT",
                "DeviceID": "7",
                "AlarmDesc": "机箱门被打开",
                "AlarmType": "6",
                "OccurTime": "100304",
                "OccurDate": "20190919"
            }, {
                "DeviceModel": "HD-4CT",
                "DeviceID": "7",
                "AlarmDesc": "机箱门关闭",
                "AlarmType": "6",
                "OccurTime": "100351",
                "OccurDate": "20190919"
            }, {
                "DeviceModel": "HD-4CT",
                "DeviceID": "7",
                "AlarmDesc": "机箱门被打开",
                "AlarmType": "6",
                "OccurTime": "100403",
                "OccurDate": "20190919"
            }, {
                "DeviceModel": "HD-4CT",
                "DeviceID": "7",
                "AlarmDesc": "机箱门关闭",
                "AlarmType": "6",
                "OccurTime": "100420",
                "OccurDate": "20190919"
            }]
        }
    },
    "Seq": "20190919164121000001"
}
let newjson = JSON.parse(JSON.stringify(obj.Body.Operation.AlarmInfo))

[前端_小菜鸟]

如果是对象,直接 res ={上面所得到的json数据} , res.Body.Operation.AlarmInfo 就可以拿到,然后把它赋值给一个变量就可以, 如果是json字符串,那就要 JSON.parse(json).Body.Operation.AlarmInfo 就可以拿到,然后把它赋值给一个变量就可以.