本文共 1008 字，大约阅读时间需要 3 分钟。

• 微信小程序开发在使用 Canvas 进行真机调试的时候报错：

VM22:2 Unhandled promise rejection TypeError: r.Canvas is not a constructor    at n.value (eval at n.call.document (runtime.js?devtools_ignore=true:1), 
   
    :2:1055836)    at n.value (eval at n.call.document (runtime.js?devtools_ignore=true:1), 
    
     :2:761772)    at t (eval at n.call.document (runtime.js?devtools_ignore=true:1), 
     
      :2:761939)    at n.value (eval at n.call.document (runtime.js?devtools_ignore=true:1), 
      
       :2:762028)    at eval (eval at n.call.document (runtime.js?devtools_ignore=true:1), 
       
        :2:1278758)    at new E (eval at n.call.document (runtime.js?devtools_ignore=true:1), 
        
         :2:67059) at Vc (eval at n.call.document (runtime.js?devtools_ignore=true:1), 
         
          :2:1278720) at eval (eval at n.call.document (runtime.js?devtools_ignore=true:1), 
          
           :2:1280188) at Array.forEach (
           
            ) at r (eval at n.call.document (runtime.js?devtools_ignore=true:1), 
            
             :2:1280166)
            
           
          
         
        
       
      
     
    
   

• 原因：canvas 2d和 webgl 暂不支持真机调试，请直接使用真机预览。

转载地址：https://blog.csdn.net/zz00008888/article/details/109023907 如侵犯您的版权，请留言回复原文章的地址，我们会给您删除此文章，给您带来不便请您谅解！