js random color

randomColor.js

const setBg = () => {
    const square = document.querySelector('.items');
    const randomColor = Math.floor(Math.random()*16777215).toString(16);
    
    console.log(square);
    square.style.background = "#" + randomColor;
    // console.log(square);
}
  setInterval(setBg,1000);

const tabColor = ['#e9ecef','#dee2e6','#ced4da','#adb5bd','#6c757d','#343a40','#D64933'];

const setbg2 = ()=>{
  const square2 = document.querySelector('.items2');
  //chiffre random----------------
  let chiffreRandom = tabColor.length;
  chiffreRandom = Math.floor(Math.random()*chiffreRandom)
  // console.log(chiffreRandom);

  const doneTab = tabColor[chiffreRandom];
  console.log(doneTab);

  square2.style.background = doneTab;
  console.log(square2);
}  
setInterval(setbg2,1000);