How to pass parameters to setTimeout function [duplicate]

Answer 1

Aadit had the right idea. I needed to start multiple timeouts within a loop, and they all ended up with the variable set to the same value. Here is a fiddle illustrating why the only method that works well asynchronously is Aadit's.

http://jsfiddle.net/85fmwew4/

for(i=0;i<10;i++){
    setTimeout(function(){bad(i)}, 1000)    // bad for async
    setTimeout(good, 1000, i)               // good for async
}