Here's the underlying rules of how "x == y" works: http://ecma-international.org/ecma-262/5.1/#sec-11.9.3 http://ecma-international.org/ecma-262/5.1/#sec-11.9.3

Here's the underlying rules of how "x == y" works: http://ecma-international.org/ecma-262/5.1/#sec-11.9.3 http://ecma-international.org/ecma-262/5.1/#sec-11.9.3 Weak typing and automatic coercions lead to some confusing results, but JS fares better than PHP.