写的app.js里有中文：
console.log('现在的并发数是', concurrencyCount, '，正在抓取的是', url, '，耗时' + delay + '毫秒');
一运行，就报错：
上网搜了一下，说是系统编码的问题。
重新打开cmd，输入chcp 936。然后重新运行程序即可。
solution：
I have just been playing with Unicode support in Windows command prompt, using the code-page 65001 I can't get npm to install, giving me the above error. Changing the code-page to 850 chcp 850and running the exact same npm command it then works fine.
Thus your problem could very well be related to the encoding your environment is in.
