[英]Create array from JSON object
以下是我的JSON對象
var validation_messages ={
"test1": [{
"1": {
"rssi": -25,
}
}, {
"2": {
"rssi": -25,
}
}],
"test2": [{
"15": {
"rssi": -10,
}
}, {
"19": {
"rssi": -21,
}
}]
}
以下是我嘗試過的
var rssival = []; 對於(validation_messages中的var鍵){
var obj = validation_messages[key];
for (var i=0; i<obj.length; i++) {
for(x in obj[i]){
rssival.push(obj[i][x].rssi);
}
}
} console.log(rssival)
我正在輸出為
[-25, -25, -10, -21]
但是我需要一個輸出
[[-25, -25], [-10, -21]]
誰能幫幫我嗎?
您可以嘗試如下操作:
var validation_messages={"00:11:74:41:3d:f0":[{1:{channel:1,type:2,rssi:-25,rate:24}},{2:{channel:1,type:2,rssi:-25,rate:24}}],"00:23:68:bd:6c:19":[{15:{channel:1,type:0,rssi:-10,rate:1}},{19:{channel:1,type:2,rssi:-21,rate:54}}]}; var result = Object.keys(validation_messages).map(function(k){ var tmp = []; validation_messages[k].forEach(function(o){ for(var k in o){ tmp.push(o[k].rssi) } }) return tmp }); console.log(result)
這不是您所需要的嗎?
var validation_messages={"00:11:74:41:3d:f0":[{1:{channel:1,type:2,rssi:-25,rate:24}},{2:{channel:1,type:2,rssi:-25,rate:24}}],"00:23:68:bd:6c:19":[{15:{channel:1,type:0,rssi:-10,rate:1}},{19:{channel:1,type:2,rssi:-21,rate:54}}]}; var rssival = []; for (var key in validation_messages) { var obj = validation_messages[key]; var aux = []; for (var i = 0; i < obj.length; i++) { for (x in obj[i]) { aux.push(obj[i][x].rssi); } } rssival.push(aux); } console.log(rssival);
另一種方法。
var obj = {"00:11:74:41:3d:f0":[{1:{channel:1,type:2,rssi:-25,rate:24}},{2:{channel:1,type:2,rssi:-25,rate:24}}],"00:23:68:bd:6c:19":[{15:{channel:1,type:0,rssi:-10,rate:1}},{19:{channel:1,type:2,rssi:-21,rate:54}}]}, result = Object.keys(obj).map(function(v) { var arr = []; obj[v].forEach(c => arr.push(c[Object.keys(c)].rssi)); return arr; }); console.log(result);
您可以使用Array#map
將所有屬性分組。
var validation_messages = validation_messages = { "00:11:74:41:3d:f0": [{ "1": { channel: 1, type: 2, rssi: -25, rate: 24 } }, { "2": { channel: 1, type: 2, rssi: -25, rate: 24 } }], "00:23:68:bd:6c:19": [{ "15": { channel: 1, type: 0, rssi: -10, rate: 1 } }, { "19": { channel: 1, type: 2, rssi: -21, rate: 54 } }] }, grouped = Object.keys(validation_messages).map(function (k) { return validation_messages[k].reduce(function (r, o) { Object.keys(o).forEach(function (l) { r.push(o[l].rssi); }); return r; }, []); }); console.log(grouped);
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