Promise.all() Example

gistfile1.txt

function loop1(){
  return new Promise((resolve, reject) => {
    for (var i = 1; i <= 100; i++) {
      console.log('loop1 =>', i);
    }
    
    resolve();
    })
  }
    
function loop2(){
  return new Promise((resolve, reject) => {
    for (var i = 1; i <= 100; i++) {
      console.log('loop2 =>', i);
    }
  
  resolve();
  });
}
    
Promise.all([loop1(), loop2()]);