[removed] Passing parameters to a callback function

Question

I\'m trying to pass some parameter to a function used as callback, how can I do that?

function tryMe (param1, param2) {
    alert (param1 + \" and \" + param         


        

Answer 1

When you have a callback that will be called by something other than your code with a specific number of params and you want to pass in additional params you can pass a wrapper function as the callback and inside the wrapper pass the additional param(s).

function login(accessedViaPopup) {
    //pass FB.login a call back function wrapper that will accept the
    //response param and then call my "real" callback with the additional param
    FB.login(function(response){
        fb_login_callback(response,accessedViaPopup);
    });
}

//handles respone from fb login call
function fb_login_callback(response, accessedViaPopup) {
    //do stuff
}