How to swap two variables in JavaScript?? i want swap() function!

Question

var a = 10,
var b 5;

swap(a,b);

console.log(a, b) // a = 5, b = 10

Answer 1

es6 style
[a,b]=[b,a]
or with a binary operator
a = a ^ b;
b = a ^ b;
a = a ^ b;
or with a temporary variable
var tmp;
tmp = a;
a = b;
b = tmp;

Answer 2

function swap(x,y) {
a = y;
b = x;
// supposing that a and b are global variables
}

Answer 3

use temporary variable
var temp;
temp=a;
a=b;
b=temp;