[为学校创建了一个杂货店应用程序,我在选择一个要删除的元素时遇到了麻烦。到目前为止,我已经编写了代码,并且可以工作,但是在单击“检查”按钮的地方,它会划掉页面上具有相同类的所有元素,而不仅仅是单个项目,“检查”按钮是下面,并与之相关。如何使用“点击”按钮一次只定位一种杂货?我的jQuery中的某些内容不正确。
jQuery:
function checkItem() {
$('.shopping-item-toggle').on('click', event => {
const targetItem = $('.shopping-item');
const otherItems = $('.shopping-item-toggle').not(targetItem);
otherItems.removeClass('shopping-item__checked');
targetItem.toggleClass('shopping-item__checked');
});
}
$(checkItem);
CSS:
* {
box-sizing: border-box;
}
body {
font-family: 'Roboto', sans-serif;
}
button, input[type="text"] {
padding: 5px;
}
button:hover {
cursor: pointer;
}
#shopping-list-item {
width: 250px;
}
.container {
max-width: 600px;
margin: 0 auto;
}
.shopping-list {
list-style: none;
padding-left: 0;
}
.shopping-list > li {
margin-bottom: 20px;
border: 1px solid grey;
padding: 20px;
}
.shopping-item {
display: block;
color: grey;
font-style: italic;
font-size: 20px;
margin-bottom: 15px;
}
.shopping-item__checked {
text-decoration: line-through;
}
HTML:
<!DOCTYPE html>
<html lang="en">
<head>
<title>Shopping List</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/4.2.0/normalize.min.css">
<link href="https://fonts.googleapis.com/css?family=Roboto" rel="stylesheet">
<link rel="stylesheet" href="main.css">
</head>
<body>
<div class="container">
<h1>Shopping List</h1>
<form id="js-shopping-list-form">
<label for="shopping-list-entry">Add an item</label>
<input type="text" name="shopping-list-entry" id="shopping-list-entry" placeholder="e.g., broccoli">
<button type="submit">Add item</button>
</form>
<ul class="shopping-list">
<li>
<span class="shopping-item">apples</span>
<div class="shopping-item-controls">
<button class="shopping-item-toggle">
<span class="button-label">check</span>
</button>
<button class="shopping-item-delete">
<span class="button-label">delete</span>
</button>
</div>
</li>
<li>
<span class="shopping-item">oranges</span>
<div class="shopping-item-controls">
<button class="shopping-item-toggle">
<span class="button-label">check</span>
</button>
<button class="shopping-item-delete">
<span class="button-label">delete</span>
</button>
</div>
</li>
<li>
<span class="shopping-item shopping-item__checked">milk</span>
<div class="shopping-item-controls">
<button class="shopping-item-toggle">
<span class="button-label">check</span>
</button>
<button class="shopping-item-delete">
<span class="button-label">delete</span>
</button>
</div>
</li>
<li>
<span class="shopping-item">bread</span>
<div class="shopping-item-controls">
<button class="shopping-item-toggle">
<span class="button-label">check</span>
</button>
<button class="shopping-item-delete">
<span class="button-label">delete</span>
</button>
</div>
</li>
</ul>
</div>
<script
src="https://code.jquery.com/jquery-3.4.1.js"
integrity="sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU="
crossorigin="anonymous"></script>
<script src="index.js"></script>
</body>
</html>
Image of clicking one check box, but it crossing everything off
[使用closest
和prev
的组合获取当前购物商品,您现在选择所有购物商品
function checkItem() {
$('.shopping-item-toggle').on('click', event => {
const targetItem = $(event.target).closest('.shopping-item-controls').prev('.shopping-item');
const otherItems = $('.shopping-item').not(targetItem);
otherItems.removeClass('shopping-item__checked');
targetItem.toggleClass('shopping-item__checked');
});
}
function checkItem() {
$('.shopping-item-toggle').on('click', event => {
const targetItem = $(event.target).closest('.shopping-item-controls').prev('.shopping-item');
const otherItems = $('.shopping-item').not(targetItem);
otherItems.removeClass('shopping-item__checked');
targetItem.toggleClass('shopping-item__checked');
});
}
$(function() {
checkItem();
})
* {
box-sizing: border-box;
}
body {
font-family: 'Roboto', sans-serif;
}
button, input[type="text"] {
padding: 5px;
}
button:hover {
cursor: pointer;
}
#shopping-list-item {
width: 250px;
}
.container {
max-width: 600px;
margin: 0 auto;
}
.shopping-list {
list-style: none;
padding-left: 0;
}
.shopping-list > li {
margin-bottom: 20px;
border: 1px solid grey;
padding: 20px;
}
.shopping-item {
display: block;
color: grey;
font-style: italic;
font-size: 20px;
margin-bottom: 15px;
}
.shopping-item__checked {
text-decoration: line-through;
}
<!DOCTYPE html>
<html lang="en">
<head>
<title>Shopping List</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/4.2.0/normalize.min.css">
<link href="https://fonts.googleapis.com/css?family=Roboto" rel="stylesheet">
</head>
<body>
<div class="container">
<h1>Shopping List</h1>
<form id="js-shopping-list-form">
<label for="shopping-list-entry">Add an item</label>
<input type="text" name="shopping-list-entry" id="shopping-list-entry" placeholder="e.g., broccoli">
<button type="submit">Add item</button>
</form>
<ul class="shopping-list">
<li>
<span class="shopping-item">apples</span>
<div class="shopping-item-controls">
<button class="shopping-item-toggle">
<span class="button-label">check</span>
</button>
<button class="shopping-item-delete">
<span class="button-label">delete</span>
</button>
</div>
</li>
<li>
<span class="shopping-item">oranges</span>
<div class="shopping-item-controls">
<button class="shopping-item-toggle">
<span class="button-label">check</span>
</button>
<button class="shopping-item-delete">
<span class="button-label">delete</span>
</button>
</div>
</li>
<li>
<span class="shopping-item shopping-item__checked">milk</span>
<div class="shopping-item-controls">
<button class="shopping-item-toggle">
<span class="button-label">check</span>
</button>
<button class="shopping-item-delete">
<span class="button-label">delete</span>
</button>
</div>
</li>
<li>
<span class="shopping-item">bread</span>
<div class="shopping-item-controls">
<button class="shopping-item-toggle">
<span class="button-label">check</span>
</button>
<button class="shopping-item-delete">
<span class="button-label">delete</span>
</button>
</div>
</li>
</ul>
</div>
<script src="https://code.jquery.com/jquery-3.4.1.js" integrity="sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU=" crossorigin="anonymous"></script>
</body>
</html>