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Start your free trialDaniel McHugh
1,821 PointsCode no longer working after following the steps in this video and I'm not sure why.
I'm on the .previousElementSibling video and I tried to follow the code exactly, but it's not working. What's weirder is that the chrome console isn't saying there's anything wrong with the syntax so I'm confused. Help?
const toggleList = document.getElementById('toggleList');
const listDiv = document.querySelector('.list');
const desctiptionInput = document.querySelector('input.description');
const desctiptionP = 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.tagName == 'remove') {
let li = event.target.parentNode;
let ul = li.parentNode;
ul.removeChild(li);
}
if (event.target.tagName == 'up') {
let li = event.target.parentNode;
let prevLi = li.previousElementSibling;
let ul = li.parentNode;
if (prevLi) {
ul.insertBefore(li, prevLi);
}
}
}
});
//document.addEventListener('click', (event) => {
//console.log(event.target);
// });
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 + ':';
desctiptionInput.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
Steven Parker
231,236 PointsSome of it is just simple spelling/capitalization errors:
- "desctiptionInput" instead of "descriptionInput"
- "DescriptionInput" instead of "descriptionInput"
- "desctiptionP" instead of "descriptionP"
And some just looking in the wrong place (not a syntax error), like:
- "
(event.target.tagName == 'remove')
" instead of "(event.target.className == 'remove')
" - "
(event.target.tagName == 'up')
" instead of "(event.target.className == 'up')
"
Daniel McHugh
1,821 PointsThanks! Seems weird that the code seemed to still run as intended even with the spelling errors, but thanks for pointing them out. I must have made the misspelling often enough to make it sort of consistent.
Steven Parker
231,236 PointsVariable names are always your choice. So if you misspell something consistently throughout the program, it will work just as well as if it were spelled correctly.
Matt Brock
28,330 PointsHey Daniel, you were using tagName
instead of className
in your eventListener
function. Here's what it should be:
listUL.addEventListener('click', (event) => {
if (event.target.tagName == 'BUTTON') {
let li = event.target.parentNode;
let ul = li.parentNode;
if (event.target.className == 'remove') {
ul.removeChild(li);
}
if (event.target.className == 'up') {
let prevLi = li.previousElementSibling;
if (prevLi) {
ul.insertBefore(li, prevLi);
}
}
}
});
Daniel McHugh
1,821 PointsAh, makes sense. Thanks so much!
Matt Brock
28,330 PointsYou bet!
Daniel McHugh
1,821 PointsDaniel McHugh
1,821 PointsHere's the HTML