getting the user's input

Question

what code that can retrieve user's input such password type so that I can make the alert pop up when the password is right using JavaScript...

Answer 1

User data need to be under 7 keys, so, you have to use PHP to handle any user data.
If you want to do a code just for training, you can use JavaScript to get the user input.

var userInput = document.getElementById ("userinput").value;

Answer 2

@Scotti thx for the advice