Created
January 23, 2017 19:44
-
-
Save solominh/afe06ebaa41e682e8159909e46a2ccc4 to your computer and use it in GitHub Desktop.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // Fail var | |
| for (var i = 1; i <= 3; i++) { | |
| console.log('forloop', i) | |
| Promise.resolve().then(() => { | |
| console.log(i); // Always log 5 | |
| }) | |
| } | |
| // Use let instead | |
| for (let i = 1; i <= 3; i++) { | |
| console.log('forloop', i) | |
| Promise.resolve().then(() => { | |
| console.log(i); // Always log 5 | |
| }) | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment