JavaScript in sort-sorted instances _javascript Tips

The code looks like this:

var arr = [5,32,28,66,2,15,3];
  Arr.sort (function (A1,A2) {return 
   a1-a2;//a2-a1 input Reverse
  });
  Console.log (arr);
  Console.log (Arr.reverse ()); Reverse reverse the order of elements in an array

 var arr2 = [' Hezihao ', ' Chensan ', ' xiaomin ', ' Lishi ']
  arr2.sort ();
  Console.log (ARR2);

 var arr3 = [' 6 ', ' 8 ', ' 0 ', ' 7 ']
  arr3.sort ();
  Console.log (ARR3);

The above code enters the result:

Arrays are sorted alphabetically without passing in parameters

Sort numbers by their size, and to do this, you have to use a sort function,

If the A1-A2 is a negative number, ascending, or descending if A2-A1 is a positive number, or you can use the reverse () method to reverse the order of the elements in the array