javascript reverse array code example

Example 1: reversing an array in js

var arr=[1,2,5,6,2]
arr.reverse()

Example 2: reverse number javascript

// Function to reverse Number
function reverseNum(n) {
  let r = n.toString().split('').reverse().join('');
  return Math.sign(n) * parseInt(r);
}

// Call
reverseNum(-267);
reverseNum(31522);

// Outputs
-762
22513

Example 3: javascript reverse array

var arr = [34, 234, 567, 4];
print(arr);
var new_arr = arr.reverse();
print(new_arr);

Example 4: how to reverse an array in javascript

array = [1 2, 3]
reversed = array.reverse()

Example 5: js array reverse

[34, 234, 567, 4].reverse();

Example 6: js reverse nested array

var reversed = array.map(function reverse(item) {
    return Array.isArray(item) && Array.isArray(item[0]) 
               ? item.map(reverse) 
               : item.reverse();
});