JS for循环星期一到星期五，数组要用length属性

JS for循环星期一到星期五，数组要用length属性。

var arr = ["星期一","星期二","星期三","星期四","星期五"];
for(var i=0;i<arr.length;i++){
  console.log(arr[i])
}

   var weekList=["周一","周二","周三","周四","周五"]
          for (let index = 0; index < weekList.length; index++) {
            console.log(weekList[index]);
          }