js loop key value code example

Example 1: iterate object javascript

let obj = {
	key1: "value1",
	key2: "value2",
	key3: "value3",
	key4: "value4",
}
Object.entries(obj).forEach(([key, value]) => {
	console.log(key, value);
});

Example 2: foreach key value javascript

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

Example 3: foreach object javascript

const obj = {
  a: "aa",
  b: "bb",
  c: "cc",
};
//This for loop will loop through all keys in the object.
// You can get the value by calling the key on the object with "[]"
for(let key in obj) {
  console.log(key);
  console.log(obj[key]);
}

//This will return the following:
// a
// aa
// b
// bb
// c
// cc

Example 4: iterate over object javascript

// For a functional one-liner
Object.keys(pokemons).forEach(console.log);
// Bulbasaur
// Charmander
// Squirtle
// Pikachu