离开“console.log（）”的坏主意调用生产JavaScript代码？ [英] Bad idea to leave "console.log()" calls in your production JavaScript code?

问题描述

我的JavaScript中有一堆 console.log（）调用。

我应该评论它们吗？在我部署到生产之前出来？

我想把它们留在那里，所以我不必再去添加评论了如果我需要做更多的调试。这是一个坏主意吗？

解决方案

这将导致Javascript错误，终止包含错误的Javascript块的执行。 / p>

但是，当Firebug未激活时，你可以定义一个虚操作函数：

  if（typeof console ===undefined）{
 console = {log：function（）{}}; 
} 
  

如果您使用 log以外的任何方法，您也需要将它们存根。

I have a bunch of console.log() calls in my JavaScript.

Should I comment them out before I deploy to production?

I'd like to just leave them there, so I don't have to go to the trouble of re-adding the comments later on if I need to do any more debugging. Is this a bad idea?

解决方案

It will cause Javascript errors, terminating the execution of the block of Javascript containing the error.

You could, however, define a dummy function that's a no-op when Firebug is not active:

if(typeof console === "undefined") {
    console = { log: function() { } };
}

If you use any methods other than log, you would need to stub out those as well.

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