var myObj = {no:'u',my:'sql'} var keys = Object.keys(myObj);//returnes the array ['no','my'];
var foo = { 'alpha': 'puffin', 'beta': 'beagle' }; var keys = Object.keys(foo); console.log(keys) // ['alpha', 'beta'] // (or maybe some other order, keys are unordered).
function getKeyByValue(object, value) { return Object.keys(object).find(key => object[key] === value); }
// Object Entries returns object as Array of [key,value] Array const object1 = { a: 'somestring', b: 42 } Object.entries(object1) // Array(2) [["a", "something"], ["b", 42]] .forEach(([key, value]) => console.log(`${key}: ${value}`)) // "a: somestring" // "b: 42"
const object1 = { a: 'somestring', b: 42, c: false }; console.log(Object.keys(object1)); // expected output: Array ["a", "b", "c"]
myObject = { "key": "value" } Object.keys(myObject); // get array of keys
const object1 = { a: 'somestring', b: 42 }; for (let [key, value] of Object.entries(object1)) { console.log(`${key}: ${value}`); } // expected output: // "a: somestring" // "b: 42" // order is not guaranteed
const object1 = { a: 'somestring', b: 42, c: false }; console.log(Object.keys(object1));
var buttons = { foo: 'bar', fiz: 'buz' }; for ( var property in buttons ) { console.log( property ); // Outputs: foo, fiz or fiz, foo }