Why does changing an Array in JavaScript affect copies of the array?

Question

I\'ve written the following JavaScript:

var myArray = [\'a\', \'b\', \'c\'];
var copyOfMyArray = myArray;
copyOfMyArray.splice(0, 1);
alert(myArray); // aler         


        

Answer 1

Everything is copied by reference except primitive data types (strings and numbers IIRC).