nesting for loops code example

Example 1: nesting for loops

let arr = [
  [1,2], [3,4], [5,6]
];
for (let i=0; i < arr.length; i++) {
  for (let j=0; j < arr[i].length; j++) {
    console.log(arr[i][j]);
  }
}

Example 2: javascript nested loop

for (let exercise = 1; exercise <= 3; exercise++) {
   console.log(`---------- Starting exercise ${exercise}`)

   for (let rep = 1; rep <= 6; rep++) {
      console.log(`Exercise ${exercise}: Lifting weight repetitition ${rep}`);
   }
}