canvas渲染出来的数据
<uni-canvas data-v-41df0509="" canvas-id="canvas" id="canvas" class="lower-canvas" style="width: 300px; height: 300px; border: 0.5px solid rgb(0, 122, 255); position: absolute; left: 0px; top: 0px; touch-action: none; user-select: none;">
** <canvas width="600" height="600"></canvas>
** <div style="position: absolute; top: 0px; left: 0px; width: 100%; height: 100%; overflow: hidden;"></div>
<uni-resize-sensor>
<div>
<div></div>
</div>
<div>
<div></div>
</div>
</uni-resize-sensor>
</uni-canvas>
<canvas width="600" height="600"></canvas>
怎么将修改成
<canvas width="600" height="600" id="canvas"></canvas>
因为我调用的一个库，必须canvas得有个id才行
