I have a question about the result of an arrangement that I believe in an iteration and I do not know why the code is the following: This piece of code is an object which I will use to dynamically manage a direction that I will bring with the function fecth ()
const dataSet = {
"EMISS.CO2-TOTV-TT-TO-MD.A" : ["Maryland", {lat: 39.063946, lng: -76.802101}],//
"EMISS.CO2-TOTV-TT-TO-AL.A" : ["Alabama", {lat: 32.806671, lng: -86.791130}],//
"EMISS.CO2-TOTV-TT-TO-AK.A" : ["Alaska", {lat: 61.370716, lng: -152.404419}],//
"EMISS.CO2-TOTV-TT-TO-AZ.A" : ["Arizona", {lat: 33.729759, lng: -111.431221}],//
"EMISS.CO2-TOTV-TT-TO-AR.A" : ["Arkansas", {lat: 34.969704, lng: 92.373123}],//
"EMISS.CO2-TOTV-TT-TO-CA.A" : ["California", {lat: 36.116203, lng: -119.681564}],
"EMISS.CO2-TOTV-TT-TO-CO.A" : ["Colorado", {lat: 39.059811, lng: -105.311104}],//
"EMISS.CO2-TOTV-TT-TO-CT.A" : ["Connecticut",{lat: 41.597782, lng: -72.755371} ],//
"EMISS.CO2-TOTV-TT-TO-DE.A" : ["Delaware", {lat: 39.318523, lng: -75.507141}] ,//
"EMISS.CO2-TOTV-TT-TO-DC.A" : ["District of Columbia", {lat: 38.897438, lng: -77.026817}],//
"EMISS.CO2-TOTV-TT-TO-FL.A" : ["Florida", {lat: 27.766279, lng: -81.686783}],//
"EMISS.CO2-TOTV-TT-TO-GA.A" : ["Georgia", {lat: 33.040619, lng: -83.643074}],//
"EMISS.CO2-TOTV-TT-TO-HI.A" : ["Hawaii", {lat: 21.094318, lng: -157.498337}],//
"EMISS.CO2-TOTV-TT-TO-ID.A" : ["Idaho", {lat: 44.240459, lng: -114.478828}],//
"EMISS.CO2-TOTV-TT-TO-IL.A" : ["Illinois", {lat: 40.349457, lng: -88.986137}],//
"EMISS.CO2-TOTV-TT-TO-IN.A" : ["Indiana", {lat: 39.849426, lng: -86.258278}],//
"EMISS.CO2-TOTV-TT-TO-IA.A" : ["Iowa", {lat: 42.011539, lng: -93.210526}],//
"EMISS.CO2-TOTV-TT-TO-KS.A" : ["Kansas", {lat: 38.526600, lng: -96.726486}],//
"EMISS.CO2-TOTV-TT-TO-KY.A" : ["Kentucky", {lat: 37.668140, lng: -84.670067}],//
"EMISS.CO2-TOTV-TT-TO-LA.A" : ["Louisiana", {lat: 31.169546, lng: -91.867805}],//
"EMISS.CO2-TOTV-TT-TO-ME.A" : ["Maine", {lat: 44.693947, lng: -69.381927}],//
"EMISS.CO2-TOTV-TT-TO-MA.A" : ["Massachusetts", {lat: 42.230171, lng: -71.530106}],//
"EMISS.CO2-TOTV-TT-TO-MI.A" : ["Michigan", {lat: 43.326618, lng: -84.536095}],//
"EMISS.CO2-TOTV-TT-TO-MN.A" : ["Minnesota", {lat: 45.694454, lng: -93.900192}],//
"EMISS.CO2-TOTV-TT-TO-MS.A" : ["Mississippi", {lat: 32.741646, lng: -89.678696}],//
"EMISS.CO2-TOTV-TT-TO-MO.A" : ["Missouri", {lat: 38.456085, lng: -92.288368}],//
"EMISS.CO2-TOTV-TT-TO-MT.A" : ["Montana", {lat: 46.921925, lng: -110.454353}],//
"EMISS.CO2-TOTV-TT-TO-NE.A" : ["Nebraska", {lat: 41.125370, lng: -98.268082}],//
"EMISS.CO2-TOTV-TT-TO-NV.A" : ["Nevada", {lat: 38.313515, lng: -117.055374}],//
"EMISS.CO2-TOTV-TT-TO-NH.A" : ["New Hampshire", {lat: 43.452492, lng: -71.563896}],//
"EMISS.CO2-TOTV-TT-TO-NJ.A" : ["New Jersey", {lat: 40.298904, lng: -74.521011}],//
"EMISS.CO2-TOTV-TT-TO-NM.A" : ["New Mexico", {lat: 34.840515, lng: -106.248482}],//
"EMISS.CO2-TOTV-TT-TO-NY.A" : ["New York", {lat: 42.165726, lng: -74.948051}],//
"EMISS.CO2-TOTV-TT-TO-NC.A" : ["North Carolina", {lat: 35.630066, lng: -79.806419}],//
"EMISS.CO2-TOTV-TT-TO-ND.A" : ["North Dakota", {lat: 47.528912, lng: -99.784012}],//
"EMISS.CO2-TOTV-TT-TO-OH.A" : ["Ohio", {lat: 40.388783, lng: -82.764915}],//
"EMISS.CO2-TOTV-TT-TO-OK.A" : ["Oklahoma", {lat: 35.565342, lng: -96.928917}],//
"EMISS.CO2-TOTV-TT-TO-OR.A" : ["Oregon", {lat: 44.572021, lng: -122.070938}],//
"EMISS.CO2-TOTV-TT-TO-PA.A" : ["Pennsylvania", {lat: 40.590752, lng: -77.209755}],//
"EMISS.CO2-TOTV-TT-TO-RI.A" : ["Rhode Island", {lat: 41.680893, lng: -71.511780}],//
"EMISS.CO2-TOTV-TT-TO-SC.A" : ["South Carolina", {lat: 33.856892, lng: -80.945007}],//
"EMISS.CO2-TOTV-TT-TO-SD.A" : ["South Dakota", {lat: 44.299782, lng: -99.438828}],//
"EMISS.CO2-TOTV-TT-TO-TN.A" : ["Tennessee", {lat: 35.747845, lng: -86.692345}],//
"EMISS.CO2-TOTV-TT-TO-TX.A" : ["Texas", {lat: 31.054487, lng: -97.563461}],//
"EMISS.CO2-TOTV-TT-TO-UT.A" : ["Utah", {lat: 40.150032, lng: -111.862434}],//
"EMISS.CO2-TOTV-TT-TO-VT.A" : ["Vermont", {lat: 44.045876, lng: -72.710686}],//
"EMISS.CO2-TOTV-TT-TO-VA.A" : ["Virginia", {lat: 37.769337, lng: -78.169968}],//
"EMISS.CO2-TOTV-TT-TO-WA.A" : ["Washington", {lat: 47.400902, lng: -121.490494}],//
"EMISS.CO2-TOTV-TT-TO-WV.A" : ["West Virginia", {lat: 38.491226, lng: -80.954453}],//
"EMISS.CO2-TOTV-TT-TO-WI.A" : ["Wisconsin", {lat: 44.268543, lng: -89.616508}],//
"EMISS.CO2-TOTV-TT-TO-WY.A" : ["Wyoming", {lat: 42.755966, lng: -107.302490}]//
}here comes the next piece of code I comment there to explain in a more comfortable way
const keyDataSet = Object.keys(dataSet)//me devuelve un arreglo con el nombre de las propiedades
var locationsInfo = []//en este arreglo voy a guardar los objetos que voy a iterar mas abajo
const getLocations = () => {
for(let id of keyDataSet){
fetch('http://api.eia.gov/series/?api_key=707c8ecbdbd34cbb75272c7a4256ca6b&series_id=${id}')
.then(response => response.json())
.then(locations =>{
let locationData = {//creo un objeto donde guardo la informacion
position:{//creo otro objeto
lat:dataSet[id][1].lat,lng:dataSet[id][1].lng},
name:dataSet[id][0],
year:locations.series[0].data[0][0],
CO: locations.series[0].data[0][1]
}
locationsInfo.push(locationData)
})
}
}the problem is here I call the function of getLocations () then I print the value of the arrangement that contains all the objects and prints them normally, but then I print the length of that arrangement and it appears zero and I do not know the truth of why it happens that I would be very grateful if you told me why I do not know if it's because of the .then
getLocations()
console.log(locationsInfo);//me arroja el arreglo con todos los objetos añadidos y con una medida de 51
console.log(locationsInfo.length);// pero aca me dice que ese arreglo tiene una medida de cero y quedo como WTF! On the other hand when I print in console this appears:
What difference there is between the first arrangement does not tell me how many indexes there are but in the other it tells me that there are 30 indexes, but if I open the first one that tells me that there are zero indices, this appears:
