new String() does not behave like an array like object

Question

var nice = new String("ASH");
nice; //String {0: "A", 1: "S", 2: "H", length: 3, [[PrimitiveValue]]: "ASH"}
var reverseNice = Array.prototype.reverse.call(nice);
reverseNice.toString(); // "ASH"

whereas I was expecting reverseNice to be "HSA".

Answer 1

You can't make changes to nice, try it;

nice[0] = 'f';
nice[0]; // "A"

If you wanted to use the Array method, convert it to a true Array first

var reverseNice = Array.prototype.slice.call(nice).reverse(); // notice slice
reverseNice.join(''); // "HSA", notice `.join` not `.toString`