Basic Flow Control in JavaScript

Question

Could you, please, explain to me, how to write really basic flow control in JavaScript? Thank you.

flow([

  function(callback) { /* do something */ callback(); /* run next function */ },
  function(callback) { /* do something */ callback(); /* run next function */ },
  function(callback) { /* do something */ callback(); /* run next function */ },
  function(callback) { /* do something */ callback();  }

], function() {

  alert("Done.");

});

Answer 1

Would something like this work?

function flow(fns, last) {
    var f = last;
    for (var i = fns.length - 1; i >= 0; i--)
        f = makefunc(fns[i], f);
    f();
}

function makefunc(f, g) {
    return function() { f(g) }
}