如何将 class 从 child 切换到 html 中的另一个
How to toggle class from a child to another in html
<html>
<head><title>Don't Know</title>
</head>
<body>
<div class="parent">
<p class="child random">Lorem Ipsum<p>
<p class="child">Lorem Ipsum<p>
<p class="child">Lorem Ipsum<p>
</div>
</body>
</html>
我想将 class“随机”从一个 child(p 标签)切换到另一个 child(p 标签)。我应该如何使用更少的 Javascript/Jquery 代码来做到这一点?
这样试试:
.random {
color: red;
}
<html>
<head><title>Don't Know</title>
</head>
<body>
<div class="parent">
<p class="child random">Lorem Ipsum<p>
<p class="child">Lorem Ipsum<p>
<p class="child">Lorem Ipsum<p>
</div>
<script>
document.querySelectorAll(".child").forEach((child) => {
child.onclick = () => {
document.querySelector(".random").classList.remove("random");
child.classList.add("random");
};
});
</script>
</body>
</html>
单击 p
元素以从之前的位置删除 random
class 并将其添加到新元素。
这个决定是我做的。
$('.child').on('click', function() {
$('.child').removeClass('style_for_p');
$(this).addClass('style_for_p');
});
.child {
cursor: pointer;
}
.style_for_p {
color: green;
border: 1px solid black;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="parent">
<p class="child random">Lorem Ipsum<p>
<p class="child">Lorem Ipsum<p>
<p class="child">Lorem Ipsum<p>
</div>
只需添加:
const childEl = document.querySelectorAll(".child");
childEl.forEach((child) => {
child.addEventListener("click", () => {
document.querySelector(".random").classList.remove("random");
child.classList.add("random");
});
});
<html>
<head><title>Don't Know</title>
</head>
<body>
<div class="parent">
<p class="child random">Lorem Ipsum<p>
<p class="child">Lorem Ipsum<p>
<p class="child">Lorem Ipsum<p>
</div>
</body>
</html>
我想将 class“随机”从一个 child(p 标签)切换到另一个 child(p 标签)。我应该如何使用更少的 Javascript/Jquery 代码来做到这一点?
这样试试:
.random {
color: red;
}
<html>
<head><title>Don't Know</title>
</head>
<body>
<div class="parent">
<p class="child random">Lorem Ipsum<p>
<p class="child">Lorem Ipsum<p>
<p class="child">Lorem Ipsum<p>
</div>
<script>
document.querySelectorAll(".child").forEach((child) => {
child.onclick = () => {
document.querySelector(".random").classList.remove("random");
child.classList.add("random");
};
});
</script>
</body>
</html>
单击 p
元素以从之前的位置删除 random
class 并将其添加到新元素。
这个决定是我做的。
$('.child').on('click', function() {
$('.child').removeClass('style_for_p');
$(this).addClass('style_for_p');
});
.child {
cursor: pointer;
}
.style_for_p {
color: green;
border: 1px solid black;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="parent">
<p class="child random">Lorem Ipsum<p>
<p class="child">Lorem Ipsum<p>
<p class="child">Lorem Ipsum<p>
</div>
只需添加:
const childEl = document.querySelectorAll(".child");
childEl.forEach((child) => {
child.addEventListener("click", () => {
document.querySelector(".random").classList.remove("random");
child.classList.add("random");
});
});