yuminge-app/yun-min-program-plugin-master/ec-canvas/ec-canvas.wxml

<canvas class="ec-canvas" canvas-id="{{ canvasId }}"
bindinit="init"
bindtouchstart="{{ ec.disableTouch ? '' : 'touchStart' }}" bindtouchmove="{{ ec.disableTouch ? '' : 'touchMove' }}" bindtouchend="{{ ec.disableTouch ? '' : 'touchEnd' }}">
</canvas>