我试图添加和删除活动类,当我点击不同的面板,触发过渡,所以如果我点击不同的面板,它的工作原理,因为在它触发过渡,然后它结束时,其他面板被点击,但如果我想点击一个面板,已经打开和关闭,它不会触发它再次在第一次点击广告,这不是很好的UX.我写它在React和我是一个初学者,所以也许我没有做一些正确的事情.你可以看到下面的代码,我希望我给所有正确的信息。
componentDidMount() {
ReactDom.findDOMNode(this).addEventListener("transitionend", (e) => {
if (
e.propertyName.includes("flex") &&
e.target.classList.contains("open")
) {
e.target.classList.add("open-active");
}
});
ReactDom.findDOMNode(this).addEventListener("click", (e) => {
const elems = document.querySelector(".open-active");
if (elems !== null) {
elems.classList.remove("open-active", "open", "opac");
}
e.target.className = "open-active";
console.log(e);
});
}
render() {
const { index, top, bottom, image, open, onClick } = this.props;
const style = {
backgroundImage: `url(${image})`,
};
const openValue = open ? "open opac" : "";
return (
<div
className={`panel ${openValue}`}
style={style}
onClick={() => {
onClick(index);
}}
>
</div>
和CSS
.panel > * {
margin: 0;
width: 100%;
transition: transform 0.5s;
flex: 1 0 auto;
display: flex;
justify-content: center;
align-items: center;
}
.panel > *:first-child {
transform: translateY(-100%);
}
.panel.open-active > *:first-child {
transform: translateY(0);
}
.panel > *:last-child {
transform: translateY(100%);
}
.panel.open-active > *:last-child {
transform: translateY(0);
}
.panel p:nth-child(2) {
font-size: 4em;
}
.panel.open {
font-size: 16px;
flex: 5;
}
你好,你可以按照这个例子。
import React, {useState} from "react";
import './styles/style.css'
export default function ShowHideExample() {
const [cssClass, setCssClass] = useState('hide');
return (
<div className="App">
<h2>Show or Hide div</h2>
<button onClick={() => {
(cssClass === 'hide')? setCssClass('show') : setCssClass('hide');
}}>Click me to show or hide the div
</button>
<div className={cssClass}>
<h1>This is dynamically shown</h1>
</div>
</div>
);
}
下面是style.css文件
.show{
display: block;
background: dodgerblue;
padding:20px;
}
.hide{
display: none;
}