javascript - Cannot use getActiveObject() in Fabric.js -

i want check image quality of selected image on canvas.

my following code:

var canvas = $(".canvas-container").children('canvas').get(0); //console.log(canvas.getactiveobject().get('type')); console.log(canvas); 

the getactiveobject() log gives error: undefined not function.

the other log returns:

<canvas class="lower-canvas" width="850" height="230" style="position: absolute; width: 850px; height: 230px; left: 0px; top: 0px; -webkit-user-select: none;"></canvas> 

the canvas created in js file:

      //create fabric stage         var canvas = $productstage.children('canvas').get(0);          stage = new fabric.canvas(canvas, {             selection: false,             hovercursor: 'pointer',             rotationcursor: 'default',             controlsaboveoverlay: true,             centeredscaling: true         }); 

what must change can use can use canvas.getactiveobject()?

see http://www.panel-it.eu/shop/straatnaambord-3/# reference.

thanks in advance.

getactiveobject() method of fabric.canvas object.

with above code, use stage.getactiveobject() instead of canvas.getactiveobject()