javascript loop through object array

1/* new options with IE6: loop through array of objects */
2
3const people = [
4  {id: 100, name: 'Vikash'},
5  {id: 101, name: 'Sugam'},
6  {id: 102, name: 'Ashish'}
7];
8
9// using for of
10for (let persone of people) {
11  console.log(persone.id + ': ' + persone.name);
12}
13
14// using forEach(...)
15people.forEach(person => {
16 console.log(persone.id + ': ' + persone.name);
17});
18// output of above two methods
19// 100: Vikash
20// 101: Sugam
21// 102: Ashish
22
23
24// forEach(...) with index
25people.forEach((person, index) => {
26 console.log(index + ': ' + persone.name);
27});
28// output of above code in console
29// 0: Vikash
30// 1: Sugam
31// 2: Ashish
32

1var person={
2 	first_name:"johnny",
3  	last_name: "johnson",
4	phone:"703-3424-1111"
5};
6for (var property in person) {
7  	console.log(property,":",person[property]);
8}

1for (var prop in obj) {
2    if (Object.prototype.hasOwnProperty.call(obj, prop)) {
3        // do stuff
4    }
5}

1var array = ["e", 5, "cool", 100];
2
3for (let i = 0; i < array.length; i++) {
4	console.log(array[i]);
5}
6
7// This is a common method used to loop through elements in arrays.
8// You can use this to change elements, read them, and edit them