function getKeyByValue(object, value) {
return Object.keys(object).find(key => object[key] === value);
}
const map = {"first" : "1", "second" : "2"};
console.log(getKeyByValue(map,"2"));
Object.keys(object).find(key => object[key] === value)
const key = Object.keys(obj).find(key => obj[key] === value);
obj={
name:"akash",
age:23
}
keysval=Object.keys(obj)
console.log(keysval)