werun-wxapp/components/draw/index.wxml

<!--components/iso/index.wxml-->
<view class="container" >
    <canvas class="turn" canvas-id="turn" id="turn"> </canvas>
    <block wx:if="{{canvasImgUrl}}">
        <image class="canvas-img" id="canvas-img" src="{{canvasImgUrl}}" style="{{border}}"></image>
        <view class="pointer" wx:if="{{canvasImgUrl}}">
            <view class="wrapper" hover-class="hover-class" catchtap="luckDrawHandle">
                <view class="title">抽奖</view>
            </view>
        </view>
    </block>
    <block wx:else>
        <view class="init">初始化中...</view>
    </block>
</view>