javascript - 如何在 React 中添加关闭 Modal 的过渡以及在 Modal 外部单击时如何关闭?
问题描述
我知道有很多问题。我已经检查过了,但仍然找不到我的方法。不得不问这个,因为我被卡住了,无法移动到任何地方。我是 React 的新手,仍然是 React 的初学者,并试图在我的项目中实现 Modals。这里有两个问题。
- 如何在关闭时添加过渡?
一旦用户单击卡片,我就会显示带有过渡的模式,但是当用户关闭时,由于某种原因我无法应用过渡。
我更改了打开或关闭模式的方法,并使用以下代码在 css 中进行转换:
.show .modal-parent {
animation-name: zoom;
animation-duration: 0.6s;
}
@-webkit-keyframes zoom {
from {-webkit-transform:scale(0)}
to {-webkit-transform:scale(1)}
}
@keyframes zoom {
from {transform:scale(0)}
to {transform:scale(1)}
}
每当用户单击卡片时,我都会显示.show
类并.modal-parent
在所有模态内容所在的位置应用过渡。现在我想在用户关闭模式时做同样的事情。
- 在外部单击时如何关闭模式?
App.js 文件在这里:
import React from "react";
import "./App.css";
import Cards from "./components/Cards/cards.js";
import users from "./employees.json";
import Navbar from "./components/Navbar";
import Modals from "./components/Modals";
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
index: 0,
open: false,
};
this.nextPerson = this.nextPerson.bind(this);
}
userIndex = (cardIndex) => {
this.setState({
index: cardIndex,
open: true,
});
};
nextPerson = () => {
this.setState({
index: this.state.index + 1,
});
};
previousPerson = () => {
this.setState({
index: this.state.index - 1,
});
};
close = () => {
this.setState({
open: false,
});
};
render() {
let person = users[this.state.index];
return (
<div className="container">
<Navbar />
<div className="team-text"><p> Our team of <span className="team-number">42</span> strategists, designers, engineers, developers and managers<br/>make custom products for startups and leading companies. </p> </div>
<div className="top-card">
{users.map((user) => {
return (
<Cards
user={user}
users={users}
key={user.id}
userIndex={this.userIndex}
/>
);
})}
<Modals
open={this.state.open}
users={users}
>
<div class="modal-parent">
<div className={`modal-nav ${person.department === "Engineering" ? "engineer" : ""} ${person.department === "Business" ? "business" : ""}${person.department === "Design" ? "design" : ""}`}>
<div className="modal-close">
<a
href="#close"
title="Close"
className="close"
type="button"
onClick={this.close}
>
Close
</a>
</div>{" "}
</div>
<div className="modal-image">
<img src={person.avatar} alt="" class="modal-avatar"></img>{" "}
</div>
<div> </div>
<div className="modal-info">
<h1 className="modal-name">
{person.firstName} {person.lastName}
</h1>
<h5 className="modal-title">{person.jobTitle}</h5>
<h5 className="modal-department">{person.department}</h5>
</div>
<div className="modal-bio">
<p>{person.bio}</p>
</div>
<div className="modal-contacts">
<a href={`mailto: ${person.contact.phone}`}>
<span className={`material-icons phone ${person.department === "Engineering" ? "engineer" : ""} ${person.department === "Business" ? "business" : ""}${person.department === "Design" ? "design" : ""}`}>call</span><span className="contact-text">{person.contact.phone}</span>
</a>{" "}
<a href={`mailto: ${person.contact.email}`}>
<span className={`material-icons email ${person.department === "Engineering" ? "engineer" : ""} ${person.department === "Business" ? "business" : ""}${person.department === "Design" ? "design" : ""}`}>email</span><span className="contact-text">{person.contact.email}</span>
</a>{" "}
<a href={person.contact.url}>
<span className={`material-icons computer ${person.department === "Engineering" ? "engineer" : ""} ${person.department === "Business" ? "business" : ""}${person.department === "Design" ? "design" : ""}`}>computer</span><span className="contact-text">{person.contact.url}</span>
</a>{" "}
</div>
<div className="modal-previous-btn">
<button
className="previous-button"
onClick={this.previousPerson}
disabled={this.state.index <= 0 ? true : false}
>Previous
</button>
</div>
<div className={`modal-next-btn ${person.department === "Engineering" ? "engineer" : ""} ${person.department === "Business" ? "business" : ""}${person.department === "Design" ? "design" : ""}`}>
<button
className="next-button"
onClick={this.nextPerson}
disabled={this.state.index >= 41 ? true : false}
>Next
</button>
</div>
</div>
</Modals>
</div>
</div>
);
}
}
export default App;
解决方案
要在单击外部时关闭 Modal,您必须修改 Modals 组件。首先,您在开头创建一个 ref:
modalRef = React.createRef();
然后在渲染函数中使用该 ref:
return (
<div ref={this.modalRef}...
在模态组件的生命周期内监听 mousedown 事件:
componentDidMount() {
document.addEventListener("mousedown", this.handleMouseDown);
}
componentWillUnmount() {
document.removeEventListener("mousedown", this.handleMouseDown);
}
并且您测试点击是否在处理程序中的 ref 之外:
// Mouse click event, if outside of the popup then close it
handleMouseDown= (event) => {
if (!this.modalRef.current.contains(event.target)) {
// Notify the parent with a callback to hide the modal
};
}
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