get key by value javascript object code example

Example 1: how to find the key of an value in an object

function getKeyByValue(object, value) {
  return Object.keys(object).find(key => object[key] === value);
}


const map = {"first" : "1", "second" : "2"};
console.log(getKeyByValue(map,"2"));

Example 2: js get object keys

myObject = {
	"key": "value"
}

Object.keys(myObject); // get array of keys