Convert boolean result into number/integer

Question

I have a variable that stores false or true, but I need 0 or 1 instead, respectively. How can I do this?

Answer 1

Use the unary + operator, which converts its operand into a number.

+ true; // 1
+ false; // 0

Note, of course, that you should still sanitise the data on the server side, because a user can send any data to your sever, no matter what the client-side code says.

Answer 2

Javascript has a ternary operator you could use:

var i = result ? 1 : 0;

Answer 3

Imho the best solution is:

fooBar | 0

This is used in asm.js to force integer type.