I have two JS functions. One calls the other. Within the calling function, I&#39;d like to call the other, wait for that function to finish, then continue on. So, for example/pseudo code:

    function firstFunction(){
        for(i=0;i&lt;x;i++){
            // do something
        }
    };

    function secondFunction(){
        firstFunction()
        // now wait for firstFunction to finish...
        // do something else
    };

I came up with this solution, but don&#39;t know if this is a smart way to go about it.

    var isPaused = false;

    function firstFunction(){
        isPaused = true;
        for(i=0;i&lt;x;i++){
            // do something
        }
        isPaused = false;
    };

    function secondFunction(){
        firstFunction()
        function waitForIt(){
            if (isPaused) {
                setTimeout(function(){waitForIt()},100);
            } else {
                // go do that thing
            };
        }
    };

Is that legit? Is there a more elegant way to handle it? Perhaps with jQuery?

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Proper way to wait for one function to finish before continuing?