Question

what would be the regular expression to check if a given string contains atleast one number and one uppercase letter?
Thanks in advance

I am doing like this

function validate_pass{
var var_password = document.getElementById("npassword").value;
else if (!(/^(?=.*\d)(?=.*[A-Z]).+$/).test(var_password))){
    msg = "Password should contain atleast.";

    showErrorMsgPassword(msg);
    $('#npassword').val('');
    $('#cpassword').val('');
    return false;
  }

else return true;

Answer 1

It’s been a while since I’ve done this, and I’m fairly certain there is a more efficient way than this. You will need to use positive lookaheads, but there should be a way to remove the wildcards from within them:

This regex (/^(?=.*[A-Z])(?=.*\d).*$/) will return the entire password if it matches the criteria.

('a3sdasFf').match(/^(?=.*[A-Z])(?=.*\d).*$/);