[英]How to add buttons next to each list item to delete the item when clicked on its corresponding delete button
[英]delete a list item when a button clicked
我一直想修改此代碼以包括一個delete按鈕,因此單擊該按鈕時,列表項將被刪除,但無法正常工作。
//ORIGINAL CODE//
let elList, addLink, newEl, newText, counter, listItems, oldEl, removeLink;
elList = document.getElementById('list');
addLink = document.querySelector('a');
counter = document.getElementById('counter');
oldEl = document.getElementsByTagName('li');
removeLink = document.getElementById('delete');
function addItem(e) {
e.preventDefault();
newEl = document.createElement('li');
newText = document.createTextNode('New list item');
newEl.appendChild(newText);
elList.appendChild(newEl);
}
function updateCount() {
listItems = elList.getElementsByTagName('li').length;
counter.innerHTML = listItems;
}
addLink.addEventListener('click', addItem, false);
elList.addEventListener('DOMNodeInserted', updateCount, false);
//WHAT I TRIED//
function removeItem(){
e.preventDefault();
oldEl.parentNode.removeChild(oldEl);
}
removeLink.addEventListener('click', removeItem, false);
我希望當我單擊“刪除”按鈕時,列表項之一消失,但它沒有任何作用。 請我需要一些幫助,因為我已經被困在這里很長時間了
oldEl = document.getElementsByTagName('li');
getElementsByTagName返回一個NodeList,您不能通過以下操作將其刪除:
oldEl.parentNode.removeChild(oldEl);
如果要刪除oldEl中的所有項目,請執行以下操作:
function removeItems(){
oldEl.forEach((item) => {
item.parentNode.removeChild(item);
});
}
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