javascript - Create pop-up thank you message on form submit -
i added e-mail sign-up form landing page , works fine (using firebase back-end btw). however, i'd either redirect "thankyou.html " page or have pop-up thank message appear upon submit. how can make work? know pretty easy, i'm novice. here's code i'm using. included script in html: `<script> var signupform = document.getelementbyid('signup-form'); var signupsuccess = document.getelementbyid('signup-success'); var signuperror = document.getelementbyid('signup-error'); var signupbtn = document.getelementbyid('signup-button'); var onsignupcomplete = function(error) { signupbtn.disabled = false; if (error) { signuperror.innerhtml = 'sorry. not signup.'; } else { signupsuccess.innerhtml = 'thanks signing up!'; // hide form signupform.style.display = 'none'; } }; function signup(formobj) { // store emails firebase var myfirebaseref = new firebase("https:...