Save arrays as value in keys and loop over them to get key-CodePudding

I want to be able to use getValue and iterate myObject keys to get the key value "f" if i input any variable.

result = "f";

result = " g";

const myObject = {
  "f": [1, 2, 3, 4, 5],
  "g": [6, 7, 8, 9, 10]
};
let getValueOne = 1;

function getKeyByValue() {
  for (let i = 0; i < myObject[value].length; i  ) {
    result = myObject.key[i];
    if (i === getValueOne) {
      console.log(result);
    }
  }
}

CodePudding user response：

You mean find the key which array contains the value?

const getByValue = (obj,val) => Object
  .entries(obj)
  .filter(([key,arr]) => arr.includes(val))
  .map(([key,arr]) => key)[0] || "N/A";
const myObject = {
  "f": [1, 2, 3, 4, 5],
  "g": [6, 7, 8, 9, 10]
};
console.log(getByValue(myObject,1))
console.log(getByValue(myObject,99))
console.log(getByValue(myObject,6))

CodePudding user response：

@mplungjans answer using Array.find

const getByValue = (obj, val) => 
(Object.entries(obj).find(([key, arr]) => 
   arr.find(v => val === v)) || [`N/A`]).shift();
const myObject = {
  f: [1, 2, 3, 4, 5],
  g: [6, 7, 8, 9, 10]
};
console.log(getByValue(myObject,1))
console.log(getByValue(myObject,99))
console.log(getByValue(myObject,6))