canvas - Javascript addEventListener within addEventListener -


this silly question, i'm having hard time sequence of event listeners shouldn't running time basically. want click button allow mouse events performed on <canvas> element. on mousedown there logged console, , long the mouse down want statement logging console, , on mouseup there should final statement , mousemove logging cease. @ current, anytime after first mousedown, there mousemove logging, ignoring mup boolean stop it. might there's wrong nesting event listeners, wasn't aware of problems might cause...

here's code far, appreciated:

function mousemove() {     var mx = canvas_x,         = canvas_y;      console.log('move: ' + mx + ',' + + ',' + mouseup); }  btnrect.addeventlistener('click', function (event) {     drect = false;      c.addeventlistener('mousedown', function () {         var x = canvas_x,             y = canvas_y;          mouseup = false;          console.log('down: ' + x + ',' + y + ',' + mouseup);          if(mouseup === false) {             c.addeventlistener('mousemove', mousemove);         } else if (mouseup === true) {             c.removeeventlistener('mousemove', mousemove);         } else {             c.removeeventlistener('mousemove', mousemove);         }     });      c.addeventlistener('mouseup', function () {         var ex = canvas_x,             ey = canvas_y;          mouseup = true;          console.log('up: ' + ex + ',' + ey + ',' + mouseup);     });  });


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