app.js

const hamburger = document.querySelector(".hamburger");
const navLinks = document.querySelector(".nav-links");
const links = document.querySelector(".nav-links li");

hamburger.addEventListener('click', ()=>{
    navLinks.classList.toggle('open');
    
});



function checkResponse() {
    const dropdown = document.querySelector('#selAct');
	const val = dropdown.value;
	const specifyInput = document.getElementById('specify');
	const teacher = document.getElementById('teacher');
	const specifyInputRow = document.getElementById('specifyRow');
	const teacherRow = document.getElementById('teacherRow');
    teacher.style.display='inline-block';
    teacherRow.style.display='block';
    if(val=='club' || val=='sport' || val=='other') {
        specifyInput.style.display='inline-block';
        specifyInputRow.style.display='block';
    }
    else {
        specifyInput.style.display='none';
        specifyInputRow.style.display='none';
    }

    if(val=='club') {
        specifyInput.placeholder='Club Name';
        teacher.placeholder = "Club Adviser";
    }
    else if(val=='sport') {
        specifyInput.placeholder='Sport Name';
        teacher.placeholder = "Coach";
    }
    else{
        specifyInput.placeholder='Specify';
        teacher.placeholder = "Teacher";
    }
}



var i = 1;
var amtSlides = document.getElementsByClassName("slideB");

function changeSlides(a) {
    i += a;
    if(i < 1) {
        i = amtSlides.length;
    }
    if (i > amtSlides.length) {
        i = 1;
    }
    display(i);

}

function display(x) {

    for (j = 0; j < amtSlides.length; j++) {
        amtSlides[j].style.display = "none";
    }
    amtSlides[x-1].style.display = "block";

}  

function sendAlert() {
    var x = document.getElementsByTagName("form")

    // Form submission
	var selection = document.getElementById('selAct').value;
	if (isValid() && (["club", "sport", "other"].includes(selection))){
		if (
			document.getElementById('specify').value != "" &&
			document.getElementById('teacher').value != "" &&
			document.getElementById('ID').value != "" &&
			document.getElementById('EMail').value != "" &&
			document.getElementById('Name').value != "" &&
			document.getElementById('pickBus').value != ""
		) {
			x[0].submit()
			alert('You have submitted!')
			if (!isMobile()) {
				signOut()
			} 
        }
    }
	else if (isValid() && (["extra_help", "detention"].includes(selection))){
		if (
			document.getElementById('teacher').value != "" &&
			document.getElementById('ID').value != "" &&
			document.getElementById('EMail').value != "" &&
			document.getElementById('Name').value != "" &&
			document.getElementById('pickBus').value != ""
		) {
			x[0].submit()
			alert('You have submitted!')
			if (!isMobile()) {
				signOut()
			} 
        }
    }

    else {
        let message = (isValid()) ? 'Invalid submission. Please fill out the whole form, or contact support at nbthstechnologyclub@gmail.com.' : 'Invalid submission. Please login with your school account'; //Based on if user is signed in with school domain account.
        alert(message)
    }

    

}