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Turn video controls on/off

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UPDATE:  Oh, gee!  Never mind.  I'm just blind.  I needed doh == true, not doh=true.

My page loads a video file.  I desire a button that turns the video controls on and off.  For the life of me, I can't figure out what I'm doing wrong in the code below.  The var "doh" correctly identifies whether the video controls are on (true) or off (false).  However, the IF statement always evaluates as if "doh" is TRUE.  What in the heck is wrong with my IF statement?


        document.getElementById("showControls").addEventListener("click", function (evt) {
            var doh = video.controls;
            if (doh = true) {
                alert("in if doh=true clause");
                video.controls = false;
                evt.target.innerHTML = "<img alt='Show' />"
            } else {
                alert("in if doh=false clause");
                video.controls = true;
                evt.target.innerHTML = "<img alt='Hide' />"
        }, false);


Edited by SerenityNetworks

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