for a in b javascript code example

Example 1: javascript loop through object

var p = {
    "p1": "value1",
    "p2": "value2",
    "p3": "value3"
};

for (var key in p) {
    if (p.hasOwnProperty(key)) {
        console.log(key + " -> " + p[key]);
    }
}

Example 2: how to use for of in javascript

const array1 = ['a', 'b', 'c'];

for (const element of array1) {
  console.log(element);
}