In place swap in Javascript

You can do a in-place swap using a buffer in JS with the following code. Strings are themselves immutable in JS. Hence, you cannot do a in-place swap with Strings in JS.

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function reverseString(str) { var temp; for (var i = 0; i<str.length/2; i++) { temp = str[i]; str[i] = str[str.length - i - 1]; str[str.length - i - 1] = temp; } } var a = new Buffer("how are you"); console.log(a.toString()); reverseString(a);

The above code outputs:

1 2	how are you uoy era woh