You can pass arguments into setTimeout and setInterval

Let's say you want to pass 2 variables to the function you call in setTimeout.

Approach 1

var callback = function(a, b){
    console.log(a + b);  // 'foobar'
};

window.setTimeout(function(){
    callback('foo', 'bar');
}, 1000);

Approach 2

window.setTimeout(callback, 1000, 'foo', 'bar');

(Approach 2: IE Support > 9)