return 0['toString']['length'];
why does it return 1
He's not calling the `toString()` method, though, so the length property is for the method.
Reinis I.
2010-09-10 08:46:39
Yes, in fact my answer was not good, just a try ;) But this is a strange syntax used here (anyway, Javascript is just strance)
romaintaz
2010-09-10 08:51:26
+8
A:
1000['toString'] gives you the function object Number.prototype.toString, and in JS, function objects have a property called length which returns the number of arguments the function takes. In this case is 1 because Number.prototype.toString receives a radix argument.
alert(Number.prototype.toString.length) // 1
References:
Ionuț G. Stan
2010-09-10 08:49:50