Question

I have a function that done some asynch operations :

function funcAsynch() {
    // asynch operations
}

well, I’d like calling this function, and declare a callback to execute when all asynch operations are finished.

Somethings like

customCallback(funcAsynch(), function () { 
    alert("all asynch operations are finished") 
});

how can I do it?

Answer 1

Define a parameter for your funcAsynch() function.

function funcAsynch(callback) {
    // asynch operations
    // invoke callback() when asynch is done
}

And pass the callback function to that parameter.

funcAsynch(function () { 
    alert("all asynch operations are finished");
});