我正在尝试使用JavaScript将某些类添加或删除到元素时过渡width属性.如果我尝试更改：hover的属性,过渡效果很好,但是如果我尝试通过添加或删除类来过渡它,则过渡效果将不起作用.我究竟做错了什么？
function activate(number) {
var bottom1 = document.getElementById("bottom-1");
var bottom2 = document.getElementById("bottom-2");
if (number === 1) {
bottom1.classList.add("active");
bottom2.classList.remove("active");
} else {
bottom2.classList.add("active");
bottom1.classList.remove("active");
}
}body {
display: flex;
}
.container {
position: relative;
}
.bottom-1 {
position: absolute;
bottom: 0px;
right: 0px;
height: 2px;
background-color: red;
transition: width 1s ease;
}
.bottom-2 {
position: absolute;
bottom: 0px;
left: 0px;
height: 2px;
background-color: red;
transition: width 1s ease;
}
.active {
width: 100%;
}<div class="container">
<button onclick="activate(1)">Button 1</button>
<div id="bottom-1" class="bottom-1 transition"></div>
</div>
<div class="container">
<button onclick="activate(2)">Button 2</button>
<div id="bottom-2" class="bottom-2 transition"></div>
</div>解决方法:
您需要在转换按钮CSS之前定义宽度：
function activate(number) {
var bottom1 = document.getElementById("bottom-1");
var bottom2 = document.getElementById("bottom-2");
if (number === 1) {
bottom1.classList.add("active");
bottom2.classList.remove("active");
} else {
bottom2.classList.add("active");
bottom1.classList.remove("active");
}
}body {
display: flex;
}
.container {
position: relative;
}
.bottom-1 {
position: absolute;
bottom: 0px;
right: 0px;
height: 2px;
width: 0%;
background-color: red;
transition: width 1s ease;
}
.bottom-2 {
position: absolute;
bottom: 0px;
left: 0px;
height: 2px;
width: 0%;
background-color: red;
transition: width 1s ease;
}
.active {
width: 100%;
}<div class="container">
<button onclick="activate(1)">Button 1</button>
<div id="bottom-1" class="bottom-1 transition"></div>
</div>
<div class="container">
<button onclick="activate(2)">Button 2</button>
<div id="bottom-2" class="bottom-2 transition"></div>
</div>版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 [email protected] 举报，一经查实，本站将立刻删除。