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Start your free trialMel Parker
Front End Web Development Techdegree Student 7,932 PointsI can't get the javascript for the "up" and "down" buttons to work. I followed the code in the video.
const toggleList = document.getElementById('toggleList');
const listDiv = document.querySelector('.list');
const descriptionInput = document.querySelector('input.description');
const descriptionP = document.querySelector('p.description');
const descriptionButton = document.querySelector('button.description');
const listUL = listDiv.querySelector('ul');
const addItemInput = document.querySelector('input.addItemInput');
const addItemButton = document.querySelector('button.addItemButton');
listUL.addEventListener('click', (event) => {
if (event.target.tagName == 'BUTTON') {
if (event.target.className == 'remove') {
let li = event.target.parentNode;
let ul = li.parentNode;
ul.removeChild(li);
}
if (event.target.className == 'up') {
let li = event.target.parentNode;
let prevLi = li.previousElementSibling;
let ul = li.parentNode;
if (prevLi) {
ul.inserBefore(li, prevLi);
}
}
if (event.target.className == 'down') {
let li = event.target.parentNode;
let nextLi = li.nextElementSibling;
let ul = li.parentNode;
if (nextLi) {
ul.inserBefore(nextLi, li);
}
}
}
});
toggleList.addEventListener('click', () => {
if (listDiv.style.display == 'none') {
toggleList.textContent = 'Hide list';
listDiv.style.display = 'block';
} else {
toggleList.textContent = 'Show list';
listDiv.style.display = 'none';
}
});
descriptionButton.addEventListener('click', () => {
descriptionP.innerHTML = descriptionInput.value + ':';
descriptionInput.value = '';
});
addItemButton.addEventListener('click', () => {
let ul = document.getElementsByTagName('ul')[0];
let li = document.createElement('li');
li.textContent = addItemInput.value;
ul.appendChild(li);
addItemInput.value = '';
});
2 Answers
jb30
44,806 Pointsif (event.target.className == 'up') {
let li = event.target.parentNode;
let prevLi = li.previousElementSibling;
let ul = li.parentNode;
if (prevLi) {
ul.inserBefore(li, prevLi);
}
}
It looks like you have a spelling error. You have ul.inserBefore(li, prevLi);
rather than ul.insertBefore(li, prevLi);
, and a similar issue later when you have ul.inserBefore(nextLi, li);
and not ul.insertBefore(nextLi, li);
.
Mel Parker
Front End Web Development Techdegree Student 7,932 PointsGreat! It works now after fixing the error. Thanks for checking my code.
Mel Parker
Front End Web Development Techdegree Student 7,932 PointsMel Parker
Front End Web Development Techdegree Student 7,932 Pointsthe index.html file