Layers of canvas fabric.js

FabricJS has the following API methods that change the z-index of objects:

canvas.sendBackwards(myObject) canvas.sendToBack(myObject) canvas.bringForward(myObject) canvas.bringToFront(myObject)

You can also use:

fabric.Canvas.prototype.orderObjects = function(compare) {    this._objects.sort(compare);    this.renderAll(); }