为什么要使用角度的$登录代替的console.log？ [英] Why use angular's $log instead of console.log?

问题描述

我的理解是一个棱角分明的最佳实践使用$登录代替的console.log。
但是，我无法找到良好的文档说明具体原因。为什么要开发利用$登录？

I understand it is a best practice in angular to use $log instead of console.log. However, I can't find good documentation explaining the reasons. Why should a developer use $log?

推荐答案

$日志首先检查浏览器是否支持的console.log （IE 8，例如，没有）。被显示在IE 8注意此prevents错误：这并不意味着它会记录什么的IE 8，它只是意味着它不会抛出错误

$log first checks if the browser supports console.log (IE 8, for example, doesn't). This prevents errors being displayed on IE 8. Note: this doesn't mean it will log anything on IE 8, it simply means it won't throw the error.

旁边的是，它也可以让你装饰和模拟 $日志用于扩展和测试目的，如果你是这样的倾向。例如，你可以装点它登录为IE 8支持的阵列。

Next to that, it also allows you to decorate and mock $log for extending and testing purposes, if you are so inclined. You could for example decorate it to log to an array for IE 8 support.

一个奖金功能：如果你传递一个JavaScript 错误实例，它会尝试很好地格式化。这可以通过阅读源$ C ​​$ C 。

A bonus feature: if you pass it a JavaScript Error instance, it will attempt to format it nicely. This can be found out by reading the source code.

编辑：这并不是说IE 8不支持的console.log它只是直到开发者工具打开不创建控制台的对象。请参阅下面的评论更多的细节。

"It is not that IE 8 doesn't support console.log. It just doesn't create the console object until the dev tools are opened." See comments below for more details.

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