How to ensure all the async calls are back in javascript -

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i have piece of javascript code doing 

function asyncs(){     var backcount = 0;     function done(){         if(backcount === 2){             alert("all done");             dosomthinguseful();         }else{             backcount ++;         }     }     function asynccall(callback){         myremotecall(callback);     }     asynccall(done);     asynccall(done);     asynccall(done); }  function dosomethinguseful(){     alert("travel moon.") }

this working. wondering if there better approach don't have write ugly counter function.

i recommend using flow control library async or nimble handle sort of thing. internally pretty same thing gives them in reusable patterns.


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