Looking for logging into the Javascript Window site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Javascript Window site. After that you can login as usual with your login credentials.
https://www.w3schools.com/howto/howto_css_login_form.asp
https://stackoverflow.com/questions/20712195/how-to-implement-login-popup-in-html-javascript
https://www.formget.com/javascript-login-form/
https://www.daniweb.com/programming/web-development/code/330933/a-simple-html-login-page-using-javascript
https://codyhouse.co/gem/loginsignup-modal-window/
https://designshack.net/articles/javascript/howto-code-modal-window-login-form/
https://developers.facebook.com/docs/reference/javascript/FB.login/
https://developer.amazon.com/docs/login-with-amazon/javascript-sdk-reference.html
https://www.back4app.com/docs/javascript/javascript-facebook-login
https://github.com/MetaMask/metamask-extension/issues/3712
https://support.smartbear.com/testcomplete/docs/app-testing/web/general/common-tasks/popups-and-dialogs.html
https://books.google.pl/books?id=PHLshinGQ4oC&pg=PT232&lpg=PT232&dq=javascript+login+window
https://sweetalert2.github.io/