For-in (loop through properties of an object)
const person = { fname:"John", lname:"Doe", age:25 };
for (let index in person) {
console.log(person[index]);
}
For-in-over (loop over the properties of an array)
const numbers = [1, 2, 3, 4, 5];
for (let index in numbers) {
console.log(numbers[index]);
}
For-of (loop through an iterable object - Arrays, Strings, Maps, NodeLists)
const names = ["John", "Jane", "Jamie"];
for (let name of names) {
console.log(name);
}
forEach()
const numbers = [1, 2, 3, 4, 5];
numbers.forEach((value, index) => {
console.log(index + ' ' + value);
});