Css 模态未显示在react with react引导中
我正在尝试创建一个模式,以便在单击Css 模态未显示在react with react引导中,css,reactjs,bootstrap-modal,react-bootstrap,Css,Reactjs,Bootstrap Modal,React Bootstrap,我正在尝试创建一个模式,以便在单击NavBar.Itemlogin/register时弹出一个登录/注册窗口 我的模态定义如下: import React from "react"; import '../assets/styles/GenericTheme.css' import { Modal } from "react-bootstrap"; class LoginRegisterModal extends React.Component { constructor(prop
NavBar.Item
login/register时弹出一个登录/注册窗口
我的模态定义如下:
import React from "react";
import '../assets/styles/GenericTheme.css'
import { Modal } from "react-bootstrap";
class LoginRegisterModal extends React.Component {
constructor(props, context) {
super(props);
this.state = {show: false};
}
open = () => {
this.setState({show: true});
}
close = () => {
this.setState({show: false});
}
render() {
return (
// <Modal show={this.state.show} onHide={this.close} dialogClassName="popup-inner">
<Modal show={this.state.show} fade={false} style={{width: "200px", display: "block"}}>
<Modal.Body>test</Modal.Body>
</Modal>
);
}
}
export default LoginRegisterModal;
import React, {} from 'react';
import { Navbar, Nav, NavDropdown } from 'react-bootstrap';
import SearchForm from '../HeaderFooter/SearchForm';
import SiteLogo from '../../assets/images/village-logo.svg';
import '../../assets/styles/HeaderTheme.css'
import LoginRegisterModal from '../LoginRegisterModal';
class NavHeader extends React.Component {
constructor(props, context) {
super(props);
this.state = {showLogin: false};
}
openLogin = () => {
this.setState({showLogin: !this.state.showLogin});
}
render() {
return (
<div>
<Navbar className="village-header" width="100" expand="lg">
<Navbar.Brand href="/">
<img
src= { SiteLogo }
width="214"
height="28"
className="d-inline-block align-top"
alt="Village"
/>
</Navbar.Brand>
<SearchForm />
<Navbar.Toggle aria-controls="basic-navbar-nav" />
<Navbar.Collapse id="basic-navbar-nav">
<Nav className="mr-auto village-header">
<Nav.Link href="/discover">Discover</Nav.Link>
<Nav.Link href="/create">Create</Nav.Link>
<Nav.Link href="/howitworks">How it Works</Nav.Link>
<Nav.Link ref="LoginRegisterModal" eventKey={1} href="#" onClick={this.openLogin}>Login/Register</Nav.Link>
<NavDropdown title="Profile" id="basic-nav-dropdown">
<NavDropdown.Item>Firstname LastName</NavDropdown.Item>
<NavDropdown.Divider />
<NavDropdown.Item href="/profile">Profile</NavDropdown.Item>
<NavDropdown.Item href="/messages">Messages</NavDropdown.Item>
<NavDropdown.Item href="/settings">Settings</NavDropdown.Item>
<NavDropdown.Item href="/logout">Logout</NavDropdown.Item>
</NavDropdown>
</Nav>
</Navbar.Collapse>
</Navbar>
<LoginRegisterModal show={this.state.showLogin} />
</div>
);
}
}
export default NavHeader;
从“React”导入React;
导入“../assets/styles/GenericTheme.css”
从“react bootstrap”导入{Modal};
类LoginRegisterModel扩展React.Component{
构造函数(道具、上下文){
超级(道具);
this.state={show:false};
}
开放=()=>{
this.setState({show:true});
}
关闭=()=>{
this.setState({show:false});
}
render(){
报税表(
//
测验
);
}
}
导出默认LoginRegisterModel;
在导航栏中,我添加了对模态的引用,如下所示:
import React from "react";
import '../assets/styles/GenericTheme.css'
import { Modal } from "react-bootstrap";
class LoginRegisterModal extends React.Component {
constructor(props, context) {
super(props);
this.state = {show: false};
}
open = () => {
this.setState({show: true});
}
close = () => {
this.setState({show: false});
}
render() {
return (
// <Modal show={this.state.show} onHide={this.close} dialogClassName="popup-inner">
<Modal show={this.state.show} fade={false} style={{width: "200px", display: "block"}}>
<Modal.Body>test</Modal.Body>
</Modal>
);
}
}
export default LoginRegisterModal;
import React, {} from 'react';
import { Navbar, Nav, NavDropdown } from 'react-bootstrap';
import SearchForm from '../HeaderFooter/SearchForm';
import SiteLogo from '../../assets/images/village-logo.svg';
import '../../assets/styles/HeaderTheme.css'
import LoginRegisterModal from '../LoginRegisterModal';
class NavHeader extends React.Component {
constructor(props, context) {
super(props);
this.state = {showLogin: false};
}
openLogin = () => {
this.setState({showLogin: !this.state.showLogin});
}
render() {
return (
<div>
<Navbar className="village-header" width="100" expand="lg">
<Navbar.Brand href="/">
<img
src= { SiteLogo }
width="214"
height="28"
className="d-inline-block align-top"
alt="Village"
/>
</Navbar.Brand>
<SearchForm />
<Navbar.Toggle aria-controls="basic-navbar-nav" />
<Navbar.Collapse id="basic-navbar-nav">
<Nav className="mr-auto village-header">
<Nav.Link href="/discover">Discover</Nav.Link>
<Nav.Link href="/create">Create</Nav.Link>
<Nav.Link href="/howitworks">How it Works</Nav.Link>
<Nav.Link ref="LoginRegisterModal" eventKey={1} href="#" onClick={this.openLogin}>Login/Register</Nav.Link>
<NavDropdown title="Profile" id="basic-nav-dropdown">
<NavDropdown.Item>Firstname LastName</NavDropdown.Item>
<NavDropdown.Divider />
<NavDropdown.Item href="/profile">Profile</NavDropdown.Item>
<NavDropdown.Item href="/messages">Messages</NavDropdown.Item>
<NavDropdown.Item href="/settings">Settings</NavDropdown.Item>
<NavDropdown.Item href="/logout">Logout</NavDropdown.Item>
</NavDropdown>
</Nav>
</Navbar.Collapse>
</Navbar>
<LoginRegisterModal show={this.state.showLogin} />
</div>
);
}
}
export default NavHeader;
import React,{}来自'React';
从“react bootstrap”导入{Navbar,Nav,NavDropdown};
从“../HeaderFooter/SearchForm”导入SearchForm;
从“../../assets/images/village logo.svg”导入SiteLogo;
导入“../assets/styles/HeaderTheme.css”
从“../LoginRegisterModel”导入LoginRegisterModel;
类NavHeader扩展了React.Component{
构造函数(道具、上下文){
超级(道具);
this.state={showLogin:false};
}
openLogin=()=>{
this.setState({showLogin:!this.state.showLogin});
}
render(){
返回(
发现
创造
工作原理
登录/注册
姓
轮廓
信息
设置
注销
);
}
}
导出默认导航头;
当我单击登录/注册时:
登录/注册
不会发生任何情况,不会显示弹出窗口或模式。我还在导航栏下面添加了一行
但没有任何变化。我还尝试添加一个className
,并强制将z-layer
设置为2,但效果并不理想
有什么想法吗?
关于您的模态组件没有“监听”任何传递的道具,即从
NavHeader
传递的show
道具。实现componentdiddupdate
lifecycle函数以检查show
prop值的更改是一个快速的解决方案。如果安装时显示打开,也可使用show
prop值设置初始状态
class LoginRegisterModal extends React.Component {
constructor(props, context) {
super(props);
this.state = {
show: props.show, // use the initial show value
};
}
open = () => {
this.setState({ show: true });
}
close = () => {
this.setState({ show: false });
}
componentDidUpdate(prevProps) {
const { show } = this.props;
if (prevProps.show !== show) {
if (show) {
open(); // open if parent says to
} else {
close(); // close if parent says to
}
}
}
render() {
return (
// <Modal
// show={this.state.show}
// onHide={this.close}
// dialogClassName="popup-inner"
// >
<Modal
show={this.state.show}
fade={false}
style={{width: "200px", display: "block"}}
>
<Modal.Body>test</Modal.Body>
</Modal>
);
}
}
父级使用的
<LoginRegisterModal
show={this.state.showLogin}
onHide={() => this.setState({ showLogin: false })}
/>
谢谢。你能给我一个受控元件的例子吗?我是新手react@Seb当然我在回答的末尾添加了一个简单的示例。我的代码正在崩溃,而且,我看不到对componentDidUpdate的调用在哪里完成。这是我得到的错误:“超过了最大更新深度。”。当组件在componentWillUpdate或componentDidUpdate内重复调用setState时,可能会发生这种情况。React限制嵌套更新的数量以防止无限循环。“@Seb您能更具体地说明什么是崩溃吗?哪个组件正在循环状态更新?