New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

两次输出各是什么？ #729

Open

pwstrick opened this issue Jul 17, 2019 · 0 comments

Labels

JavaScript

Owner

pwstrick commented Jul 17, 2019

两次输出各是什么？

for (var i = 0; i < 3; i++) {
  setTimeout(() => console.log(i), 1)
}

for (let i = 0; i < 3; i++) {
  setTimeout(() => console.log(i), 1)
}

可参考《JavaScript 进阶问题列表》

pwstrick added the JavaScript label

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment