reverse a function javascript code example

Example 1: javascript reverse a string

function reverseString(s){
    return s.split("").reverse().join("");
}
reverseString("Hello");//"olleH"

Example 2: reverse array javascript

var rev = arr.reverse();

Example 3: reverse string in typescript

let toBeReversed: string = `.eslaf eb t'ndluow ecnetnes siht ,dehctiws erew eslaf dna eurt fo sgninaem eht fI`;

let charArray: string[] = toBeReversed.split('');
console.log(charArray);

let reverseArray: string[] = charArray.reverse();
console.log(reverseArray);

let reversedArray: string = reverseArray.join('');
console.log(reversedArray);

output:

If the meanings of true and false were switched, this sentence wouldn't be false.

Example 4: js reverse

const array1 = ['one', 'two', 'three'];
console.log('array1:', array1);
//["one", "two", "three"]

const reversed = array1.reverse();
console.log('reversed:', reversed);
//["three", "two", "one"]

// Careful: reverse is destructive -- it changes the original array.
console.log('array1:', array1);
//["three", "two", "one"]