JAVASCRIPT

javascript Swapping Variables

// program to swap variables

let x = 4;
let y = 7;

// swapping variables
[x, y] = [y, x];

console.log(x); // 7
console.log(y); // 4

swap in javascript

var first = 5;
var second = 7;
[first, second] = [second, first];
console.log(first, second);
//answer - 7 5

swap function javascript

function swap(x, y) {
    var t = x;
    x = y;
    y = t;
    return [x, y];
}

console.log(swap(2, 3));

javascript swap variables

var a = 5;
var b = 3;
[a, b] = [b, a];

Swapping variables JS

let a = 1;
let b = 3;

[a, b] = [b, a];
console.log(a); // 3
console.log(b); // 1

const arr = [1,2,3];
[arr[2], arr[1]] = [arr[1], arr[2]];
console.log(arr); // [1,3,2]

swap function javascript

let a = 1;
let b = 2;
let temp;

temp = a;a = b;b = temp;
a; // => 2
b; // => 1

how do you swap the vaRIables js

let a = "red";
let b = "blue";
let c = a; // red
a = b; //over-rides to blue
b = c;

console.log(a);
console.log(b);

javascript swap

var first = 5;
var second = 7;
[first, second] = [second, first]
console.log(first, second)
//Output: 7,5

Javascript swap old and new method

//old method 
var a = 1;
var b = 2;
var temp = a;
a = b;
b = temp;
console.log(a, b)
//expected output: 2 1

//new method(using destructuring method for swap)
var x = 10;
var y = 20;
[y, x] = [x, y];
console.log(y, x);
//expected output: y = 10 and x = 20

array swap method javascript

var a = [1,2,3,4,5], b=a.length;

for (var i=0; i<b; i++) {
    a.unshift(a.splice(1+i,1).shift());
}
a.shift();
//a = [5,4,3,2,1];

swap function javascript

let a = 1;
let b = 2;

a = a ^ b;b = a ^ b;a = a ^ b;
a; // => 2
b; // => 1

swap function javascript

let a = 1;
let b = 2;

a = a + b;b = a - b;a = a - b;
a; // => 2
b; // => 1

swap function javascript

let a = 1;
let b = 2;

[a, b] = [b, a];
a; // => 2
b; // => 1

swap function javascript

function swap(x, y) {
    return [y, x];
}

console.log(swap(2, 3));

js swap

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Javascript swap

var first = 5;
var second = 7;

var third = first;
var first = second;

console.log(first)
console.log(third)
//Output: 7,5