In JavaScript functions, do I need to return something (true or false) ? So far, all the functions I wrote without returning anything work just fine. I'm just curious.
推荐答案
No;Javascript 函数不需要返回值.
No; Javascript functions are not required to return a value.
如果你调用一个没有返回值的函数，你会得到undefined作为返回值.
If you call a function that doesn't return a value, you'll get undefined as the return value.
