I am trying to create a JSON object in javascript (node-red) in this format:
gaugeData.channel.degrees:
gaugeData = {
ch1: {10: 'value',
20: 'value',
...
360: 'value'}
ch2: {10: 'value',
20: 'value',
...
360: 'value'}
...
ch8: {10: 'value',
20: 'value',
...
360: 'value'}
So that is a JSON object: "gaugeData" will have 8 properies called "channel" and each channel has 36 properties called, 10, 20 ,30 ,40 … 360.
So far I have tried:
for(var i = 1; i <= 8; i++){
for(var c = 10; c <= 360; c += 10){
var channels = {
[i]: {
[c]: randInt(),
}
}
flow.set("gaugeData", channels);
}
}
This gives me:
{"8":
{"360":250}
}
So i can see my loop is working, though no matter what i cannot get each elemnet to append to the "gaugeData" object. It is only storing the last iteration of the loop. I have tried gaugeData.append, and gaugeData.push, but having similar no good results there.
What method should i use to append each iteration to the gaugeData object?
>Solution :
You basically have it, just store the values in a parent object before calling the next iteration of each for loop. Example:
const createChannels = () =>{
const topObj = {}
for(let i = 1; i <= 8; i++){
const botObj = {}
for(let c = 10; c <= 360; c += 10){
botObj[c] = Math.floor(Math.random() * 10)
}
topObj[i] = botObj
}
return topObj
}
const myChannels = createChannels()
console.log(myChannels)
Returns:
{
'1': {
'10': 8,
'20': 4,
'30': 3,
'40': 4,
'50': 8,
'60': 0,
'70': 4,
'80': 4,
'90': 7,
'100': 0,
'110': 2,
'120': 3,
'130': 1,
'140': 1,
'150': 5,
'160': 1,
'170': 0,
'180': 6,
'190': 7,
'200': 7,
'210': 5,
'220': 2,
'230': 2,
'240': 9,
'250': 7,
'260': 0,
'270': 1,
'280': 5,
'290': 1,
'300': 4,
'310': 4,
'320': 9,
'330': 2,
'340': 2,
'350': 6,
'360': 5
},
'2': {
'10': 6,
'20': 5,
'30': 5,
'40': 2,
'50': 9,
'60': 2,
'70': 9,
'80': 7,
'90': 0,
'100': 9,
'110': 1,
'120': 8,
'130': 0,
'140': 9,
'150': 3,
'160': 7,
'170': 6,
'180': 5,
'190': 5,
'200': 5,
'210': 7,
'220': 9,
'230': 2,
'240': 7,
'250': 0,
'260': 8,
'270': 1,
'280': 2,
'290': 8,
'300': 7,
'310': 1,
'320': 0,
'330': 6,
'340': 0,
'350': 6,
'360': 8
},
'3': {
'10': 4,
'20': 2,
'30': 5,
'40': 8,
'50': 1,
'60': 2,
'70': 0,
'80': 3,
'90': 9,
'100': 5,
'110': 3,
'120': 8,
'130': 6,
'140': 7,
'150': 7,
'160': 0,
'170': 8,
'180': 7,
'190': 6,
'200': 9,
'210': 5,
'220': 2,
'230': 0,
'240': 1,
'250': 3,
'260': 5,
'270': 5,
'280': 3,
'290': 0,
'300': 1,
'310': 1,
'320': 8,
'330': 0,
'340': 2,
'350': 6,
'360': 4
},
'4': {
'10': 7,
'20': 6,
'30': 2,
'40': 5,
'50': 1,
'60': 8,
'70': 1,
'80': 1,
'90': 2,
'100': 2,
'110': 1,
'120': 5,
'130': 5,
'140': 4,
'150': 1,
'160': 6,
'170': 2,
'180': 7,
'190': 3,
'200': 0,
'210': 8,
'220': 7,
'230': 2,
'240': 7,
'250': 1,
'260': 5,
'270': 3,
'280': 1,
'290': 1,
'300': 9,
'310': 8,
'320': 7,
'330': 1,
'340': 9,
'350': 7,
'360': 1
},
'5': {
'10': 7,
'20': 3,
'30': 4,
'40': 4,
'50': 2,
'60': 9,
'70': 1,
'80': 3,
'90': 9,
'100': 9,
'110': 6,
'120': 5,
'130': 9,
'140': 6,
'150': 0,
'160': 1,
'170': 0,
'180': 6,
'190': 8,
'200': 4,
'210': 5,
'220': 5,
'230': 4,
'240': 1,
'250': 4,
'260': 2,
'270': 7,
'280': 0,
'290': 1,
'300': 5,
'310': 0,
'320': 2,
'330': 2,
'340': 3,
'350': 3,
'360': 6
},
'6': {
'10': 9,
'20': 4,
'30': 9,
'40': 9,
'50': 0,
'60': 7,
'70': 1,
'80': 1,
'90': 4,
'100': 0,
'110': 3,
'120': 1,
'130': 1,
'140': 3,
'150': 9,
'160': 4,
'170': 4,
'180': 8,
'190': 9,
'200': 2,
'210': 6,
'220': 5,
'230': 6,
'240': 0,
'250': 7,
'260': 3,
'270': 9,
'280': 3,
'290': 7,
'300': 8,
'310': 5,
'320': 3,
'330': 4,
'340': 1,
'350': 3,
'360': 7
},
'7': {
'10': 0,
'20': 7,
'30': 9,
'40': 2,
'50': 6,
'60': 5,
'70': 6,
'80': 6,
'90': 0,
'100': 8,
'110': 3,
'120': 7,
'130': 0,
'140': 9,
'150': 8,
'160': 0,
'170': 9,
'180': 1,
'190': 9,
'200': 3,
'210': 6,
'220': 1,
'230': 3,
'240': 1,
'250': 6,
'260': 6,
'270': 3,
'280': 7,
'290': 4,
'300': 2,
'310': 4,
'320': 5,
'330': 2,
'340': 0,
'350': 1,
'360': 3
},
'8': {
'10': 4,
'20': 1,
'30': 5,
'40': 3,
'50': 3,
'60': 9,
'70': 4,
'80': 3,
'90': 7,
'100': 2,
'110': 5,
'120': 8,
'130': 4,
'140': 7,
'150': 8,
'160': 3,
'170': 1,
'180': 2,
'190': 5,
'200': 6,
'210': 2,
'220': 2,
'230': 5,
'240': 5,
'250': 1,
'260': 1,
'270': 7,
'280': 8,
'290': 7,
'300': 8,
'310': 3,
'320': 9,
'330': 7,
'340': 2,
'350': 9,
'360': 5
}
}