javascript - Multiple Image is not calling in canvas using fabric.js -

i using fabric.js framework. working on 2 canvas. below code

<canvas id="drawing-area1" width="400" height="475" class="upper-canvas" style="position: absolute; left: 0px; top: 0px; -webkit-user-select: none;cursor: default;"></canvas>  <canvas id="drawing-area1_a1" width="400" height="475" class="upper-canvas" style="position: absolute; left: 0px; top: 0px; -webkit-user-select: none;cursor: default;"></canvas> 

below js

window["canvas"] = window.__canvas = new fabric.element('drawing-area1',{backgroundcolor : "#cccccc",selection: false,backgroundimage:$('#imageimage1').val() })}   window["canvas_a"] = window.__canvas = new fabric.element('drawing-area1_a1',{backgroundcolor : "#cccccc",selection: false,backgroundimage:$('#imageimage1').val() })} 

only first canvas works while other canvas not shows image. dont know how use multiple canvas. googled still no luck.