在嵌套数组对象中查找对象键

Question

I have an object I would get {FIABILITE:XXX,RECTIVITE:YYY} of region=AAA ( or other) in VOYAGES ( I dont need to search in ICC )

Here's how I'm trying to get data

 const activityName = 'VOYAGES' // activityName: VOYAGES Or ICC const queryParams = [',','region=AAA'] const objectifs = { 'VOYAGES': [ { 'region=AAA': { FIABILITE: '75', REACTIVITE: '90' } }, { 'region=BBBB': { FIABILITE: '75', REACTIVITE: '86' } } ], 'ICC': [ { 'region=CSIC': { FIABILITE: '45', REACTIVITE: '80' } } ] } const objKeys = Object.values(objectifs[activityName]) const index = objKeys.indexOf((queryParams[1])); const data = objectifs[activityName][index]; console.log(data) 

Actualy data is undefined.

I want to get {FIABILITE:XXX,RECTIVITE:YYY} of region=AAA for example

Answer 1

It's because of how your object is created that you're getting undefined, you need to add an index objectifs['VOYAGES'][0]['region=AAA'] as so :

 objectifs = { 'VOYAGES': [{ 'region=AAA': { FIABILITE: '75', REACTIVITE: '90' } }, { 'region=BBBB': { FIABILITE: '75', REACTIVITE: '86' } } ], 'ICC': [{ 'region=CSIC': { FIABILITE: '45', REACTIVITE: '80' } }] } var data = {} objectifs['VOYAGES'].forEach(function(element) { if ('region=AAA' in element) { data = element['region=AAA']; } }); console.log(data) 

Answer 2

You can try:

 const queryParams = [',','region=AAA'] const activityName = 'VOYAGES' const searchKey = queryParams[1]; objectif={'VOYAGES': [ { 'region=AAA': { FIABILITE: '75', REACTIVITE: '90' } }, { 'region=BBBB': { FIABILITE: '75', REACTIVITE: '86' } } ], 'ICC': [ { 'region=CSIC': { FIABILITE: '45', REACTIVITE: '80' } } ]}; let resultData = objectif[activityName].find((entry) => { return entry[searchKey]; })[searchKey]; console.log("Result data: ", resultData); 

Answer 3

You can find the index in the array of the object with a specific property using:

const index = objectifs[activityName].findIndex(x => !!x[queryParams[1]])

Working Example:

 const activityName = 'VOYAGES' // activityName: VOYAGES Or ICC const queryParams = [',','region=AAA'] const objectifs = { 'VOYAGES': [ { 'region=AAA': { FIABILITE: '75', REACTIVITE: '90' } }, { 'region=BBBB': { FIABILITE: '75', REACTIVITE: '86' } } ], 'ICC': [ { 'region=CSIC': { FIABILITE: '45', REACTIVITE: '80' } } ] } const index = objectifs[activityName].findIndex(x => x.hasOwnProperty([queryParams[1]])); const data = objectifs[activityName][index]; console.log(data) const obj = data[queryParams[1]]; console.log(obj)