Answers for "what is a for loop js"

javascript for loop

var colors=["red","blue","green"];
for (let i = 0; i < colors.length; i++) { 
  console.log(colors[i]);
}

for loop in javascript

For printing 0 to 9

you can write like below also
var i;
for (i = 0; i < 10; i++) {
  console.log(i);
}

for loop js

let arr = [];
for(let i = 0; i <= 10; i++){
arr[i] = Math.round(Math.random() * 10);
}
•	Result: [3, 1, 1, 2, 3, 9, 5, 6, 6, 8, 5] 
•	                        Or
let arr = [];
for(let i = 0; i <= 10; i++){
arr[i] = Math.trunc(Math.random() * 10);
} 
Result[7, 6, 0, 2, 4, 8, 7, 5, 5, 6, 5]