of or in for loop code example
Example: for of and for in javascript
let arr = ['el1', 'el2', 'el3'];
arr.addedProp = 'arrProp';
// elKey are the property keys
for (let elKey in arr) {
console.log(elKey);
}
// elValue are the property values
for (let elValue of arr) {
console.log(elValue)
}