How does scoping work in javascript

Vote count:

1

I am relatively new to javascript and working on nodejs. I have a situation if reduced woulf boil down to following code. Can I return directly in the callback with out creating another variable(temp) like I did in the below code.

var a = function(param,callback) {
    callback(param);
};

var c = function() {
    val temp = null;        
    a(5, function(a){
        temp = 2*a;
    });

    return temp;
}

asked 1 min ago

raju

468