javascript - is this callback structured correctly? -

i want save sections, made updates questions ids saved sections, save questions, , if successful fire function nextpage redirects page. i'm trying confirm correct. seems act funny if don't have anonymous function wrapped around saveallquestions.

saveallsections(function () {saveallquestions(nextpage)}); 

update:

on success of saveallsections following:

if (typeof(callback) == 'function')                callback();  

on success of saveallquestions following:

            if (questionvaluestosave.length>0) {                 saveallquestionvalues(questionvaluestosave, callback);             }             else {                  // once done hide ajax saving modal                 hidemodal();                 if (typeof(callback) == 'function')                     callback();             }  

on success of saveallquestionvalues (assuming there some) following:

                    if (typeof(callback) == 'function')                         callback(); 

yes correct syntax callback, though hard know sure without seeing more code.

the following code

saveallsections(saveallquestions(nextpage)); 

would fail because saveallquestions(nextpage) syntax execute function, rather define it. execute , pass result saveallsections, try use callback. since not function, , not function want pass strange behavior, error.

wrapping in anonymous function means you're passing function saveallsections, not execute until called outer function or callback.

update:

looks saveallquestions async based on description, executing not work correctly. anonymous function wrapper acceptable solution if need pass param.

if didn't, use

saveallsections(saveallquestions)