Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
437 views
in Technique[技术] by (71.8m points)

javascript - What's the second set of parentheses mean after a require statement in Node.js?

I'm working with a coworkers code today and I saw something I've never seen before.

I understand the first part of the statement (require in the file clean.js).

But what's with the second set of parentheses?

require('./tasks/clean')('js', './dist/js')
See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Whatever is exported from ./tasks/clean is a function, so it's just being invoked with 'js' and './dist/js' as parameters

It is equivalent to the following:

const clean = require('./tasks/clean');
clean('js', './dist/js');

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

1.4m articles

1.4m replys

5 comments

57.0k users

...