可以，我放到哪里

const wxml = item => {
 const originPrice = item.spec.originalPrice > item.spec.price ? `<text class="origin">原价:${item.spec.originalPrice}元</text>` : ''
 item.bgImg = item.spec.img.indexOf('http:') != -1 ? item.spec.img.replace(/http:/, 'https:') : item.bgImg
 item.tempImg = item.tempImg.indexOf('http:') != -1 ? item.tempImg.replace(/http:/, 'https:') : item.tempImg
  return `<view class="container">
   <image class="img" src="${item.bgImg}"></image>
   <view class="title-warp">
    <view><text class="title">${item.detail.goodsName}</text></view>
    <view><text class="rules">${item.detail.goodsShareDesc}</text></view>
   </view>
   <view class="info-block">
    <view class="price-box">
     <view class="price"><text class="un">¥</text><text class="amt">${item.spec.price}</text></view>
     <view>${originPrice}</view>
    </view>
    <view class="ewm-block">
     <image src="${item.tempImg}" class="ewm"></image>
      <view><text class="ewm-text">长按或者扫一扫</text></view>
    </view>
   </view>
  </view>
  `
}
const style = item => {
 return {
  container:{
   width: 300,
   height: 240 + 130 + 50 + 40,
   backgroundColor:'#fff',
  },
  img:{
   width: 300,
   height: 182,
  },
  titleWarp: {
   width: 270,
   height:90,
   marginLeft: 15,
   marginRight: 15,
   flexDirection: 'column',
   alignItems: 'center',
   justifyContent: 'flex-start',
  },
  title: {
   width: 270,
   height: 50,
   fontSize: 18,
   verticalAlign: 'bottom',
  },
  infoBlock:{
   width:270,
   height:130,
   paddingLeft:15,
   paddingRight:15,
   flexDirection:'row',
   justifyContent:'space-between',
   alignItems: 'center',
  },
  priceBox: {
   width: 180,
  },
  price: {
   width: 180,
   height:33,
   flexDirection: 'row',
   alignItems: 'flex-start',
   justifyContent: 'flex-start',
  },
  un: {
   height: 28,
   width: 11,
   fontSize: 12,
   verticalAlign: 'bottom',
   color: '#ff6655',
  },
  amt: {
   width: 170,
   height: 33,
   fontSize: 22,
   verticalAlign: 'bottom',
   color: '#ff6655',
  },
  origin: {
   height:16,
   width: 180,
   fontSize: 10,
   textAlign:'left',
   verticalAlign: 'bottom',
   color:'#999999'
  },
  ewmBlock:{
   width:90,
   height:130,
   flexDirection: 'column',
   alignItems: 'center',
   justifyContent: 'center',
  },
  ewm: {
   width:90,
   height:90,
  },
  ewmText: {
   width: 120,
   height: 18,
   fontSize: 9,
   textAlign:'center',
   verticalAlign: 'middle',
   color: '#999'
  },
  rules:{
   width: 270,
   height:40,
   fontSize:10,
   marginTop:10,
   verticalAlign: 'top',
   color:'#999'
  }
 }
}
export const post = arg => {
 console.log(arg)
  return {
    wxml: wxml(arg),
    style: style(arg),
  width: 300,
  height: 182 + 130 + 50 + 40,
  }
}

解决了，感谢。是源码里面有限制

你好，canvas.createImage()无法执行，请问怎么解决