[英]how can i get get the delete button to remove a single item from local storage
When I add a new item to the list it creates a delete button for that specific item. 当我向列表中添加新项目时,它将为该特定项目创建一个删除按钮。 I would like to know how I can get the delete button to remove that item from the list without deleting all the other items and also removing it from local storage. 我想知道如何获取删除按钮以从列表中删除该项目,而不删除所有其他项目,也将其从本地存储中删除。 I have tried before to get it to work but no luck. 我曾经尝试过使其工作,但没有运气。
<div class = 'wrapper'>
<h2>Tapas Order</h2
<p></p>
<ul class="plates">
<li>Loading Tapas...</li>
</ul>
<ul>
<form class='add-items'>
<input type='text' name='item' placeholder='Item Name' required>
<input type='submit' value='+ Add Item'>
</form>
</ul>
</div>
<script>
const addItems = document.querySelector('.add-items');
const itemsList = document.querySelector('.plates');
const items = JSON.parse(localStorage.getItem('items')) || [];
function addItem (e){
e.preventDefault();
const text = this.querySelector('[name=item]').value;
const item = {
text,
done: false
};
items.push(item);
populateList(items, itemsList);
localStorage.setItem('items', JSON.stringify(items));
this.reset();
}
function populateList(plates = [], platesList){
platesList.innerHTML = plates.map((plate, i) => {
return`
<li>
<input type='checkbox' data-index=${i} id='item${i}' ${plate.done ? 'checked' : ''}/>
<label for='item${i}'>${plate.text} </label>
<button id='delete'>delete</delete>
</li>
`;
}).join('');
}
function toggleDone(e){
if(!e.target.matches('input')) return;
const el = e.target;
const index = el.dataset.index;
items[index].done = !items[index].done;
localStorage.setItem('items', JSON.stringify(items));
populateList(items, itemsList);
}
addItems.addEventListener('submit', addItem);
itemsList.addEventListener('click', toggleDone);
populateList(items, itemsList);
</script>
Just modified your code slightly :) 刚刚稍微修改了代码:)
add this onclick to your button creation: 将此onclick添加到您的按钮创建中:
<button id='delete' onclick="javascript:deleteItem(this,${i})">delete</delete>
and add this function to your script: 并将此功能添加到脚本中:
function deleteItem(item,index){
//Azurethi was here!
items.splice(index, 1);
localStorage.setItem('items', JSON.stringify(items));
item.parentNode.remove();
populateList(items, itemsList);
}
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