效果

代码

index.wxml

 <van-button class="btn" size="large" type="primary" bind:tap="getUserInfo">
   <div style="display: flex; flex-direction: row; justify-content: space-around;">
     <image src="../../images/wechat.png" style="width: 40rpx; height: 40rpx; margin-right: 10rpx;" />
     <p>微信授权登录</p>
   </div>
 </van-button>