5. [类](#类)

6. [测试](#测试)

7. [并发](#并发)

9. [格式化](#formatting)

10. [评论](#comments)

**[⬆ 返回顶部](#代码整洁的-javascript)**

Thrown errors are a good thing! They mean the runtime has successfully

identified when something in your program has gone wrong and it's letting

you know by stopping function execution on the current stack, killing the

process (in Node), and notifying you in the console with a stack trace.

Doing nothing with a caught error doesn't give you the ability to ever fix

or react to said error. Logging the error to the console (`console.log`)