intl-tel-input - Vanilla JavaScript library
For entering, formatting, and validating international telephone numbers.
Resources
Check out the website, where you can find a full set of docs, a live playground where you can try out all of the options, as well as plenty of examples of different setups.
Browser support: all modern browsers — see the FAQ for minimum versions.
Issues and contributing
Please report issues and open pull requests on the main repository.
License
MIT