Taro报错集锦

1、使用异步报错

 

    错误：VM12791:1 thirdScriptError sdk uncaught third Error regeneratorRuntime is not defined

            ReferenceError: regeneratorRuntime is not defined

    解决：

         安装包 @tarojs/async-await

         npm install --save @tarojs/async-await

     随后在项目入口文件 app.js 中直接 import ，就可以开始使用 async functions 功能了

        // src/app.js

 

       import '@tarojs/async-await'

 

 

2、小程序画布相关

     错误：canvasToTempFilePath: fail canvas is empty

     解决:  添加用户授权 ,    this.$scope

 

 

wx.canvasToTempFilePath({
 canvasId: canvasId,
 x: 0,
 y: 0,
 width: imageW,
 height: imageH,
 quality: 1,
 success(res) {
 console.log("success")
 getImgsuccess(res.tempFilePath);
 },
 fail(errMsg){
 console.log("fail",errMsg)
 },
},this.$scope);  //添加用户授权