Reactjs 使用react突出显示引导中的当前页面
我见过许多与此相关的问题,我都试过了,没有结果。因此,发布了另一个看似重复的问题 我试图突出显示导航栏中的“当前页面”按钮。举个简单的例子,如果我没有将它发送到新页面,它就可以工作了。但是当我将它路由到另一个页面(一个单独的react组件)时,它就不起作用了 以下是我的代码: App.jsx:Reactjs 使用react突出显示引导中的当前页面,reactjs,bootstrap-4,react-router,react-bootstrap,Reactjs,Bootstrap 4,React Router,React Bootstrap,我见过许多与此相关的问题,我都试过了,没有结果。因此,发布了另一个看似重复的问题 我试图突出显示导航栏中的“当前页面”按钮。举个简单的例子,如果我没有将它发送到新页面,它就可以工作了。但是当我将它路由到另一个页面(一个单独的react组件)时,它就不起作用了 以下是我的代码: App.jsx: class App extends Component { render() { return ( <BrowserRouter> <
class App extends Component {
render() {
return (
<BrowserRouter>
<div>
<Route exact={true} path='/' component={HomeApp}/>
<Route path='/form' component={SomeForm}/>
</div>
</BrowserRouter>
);
}
}
如图所示,当我单击注册
或登录
时,高亮显示会起作用,因为它们不会被路由到任何其他组件
但是当我点击submitform
时,它被路由到SomeForm
组件,突出显示返回到Home
按钮
有关更多详细信息,我将发布HomeApp
和SomeForm
组件的内容:
HomeApp.jsx
class NavigationBar extends Component {
componentDidMount() {
toggleIcon();
}
render() {
return (<div id="topheader">
<nav className="navbar navbar-expand-lg navbar-light bg-light ">
<a className="navbar-brand" href="#">Whatever</a>
<button className="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav"
aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span className="navbar-toggler-icon"></span>
</button>
<div className="collapse navbar-collapse" id="navbarNav">
<ul className="navbar-nav nav nav-pills ml-auto">
<li className="nav-item active">
<a className="nav-link" href="/">Home <span className="sr-only">(current)</span></a>
</li>
<li className="nav-item">
<a className="nav-link" href="/form">Submit Form</a>
</li>
<li className="nav-item">
<a className="nav-link" href="#">Sign Up</a>
</li>
<li className="nav-item">
<a className="nav-link " href="#">Login</a>
</li>
</ul>
</div>
</nav>
</div>
)
}
}
export default NavigationBar
class HomeApp extends Component {
render() {
return (
<div className="container">
<NavigationBar/>
<Jumbotron/>
</div>
)
}
}
export default HomeApp
class SomeForm extends Component {
render() {
return (<>
<div className="container">
<NavigationBar>
</NavigationBar>
</div>
</>
)
}
}
export default SomeForm
类HomeApp扩展组件{
render(){
返回(
)
}
}
导出默认HomeApp
SomeForm.jsx
class NavigationBar extends Component {
componentDidMount() {
toggleIcon();
}
render() {
return (<div id="topheader">
<nav className="navbar navbar-expand-lg navbar-light bg-light ">
<a className="navbar-brand" href="#">Whatever</a>
<button className="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav"
aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span className="navbar-toggler-icon"></span>
</button>
<div className="collapse navbar-collapse" id="navbarNav">
<ul className="navbar-nav nav nav-pills ml-auto">
<li className="nav-item active">
<a className="nav-link" href="/">Home <span className="sr-only">(current)</span></a>
</li>
<li className="nav-item">
<a className="nav-link" href="/form">Submit Form</a>
</li>
<li className="nav-item">
<a className="nav-link" href="#">Sign Up</a>
</li>
<li className="nav-item">
<a className="nav-link " href="#">Login</a>
</li>
</ul>
</div>
</nav>
</div>
)
}
}
export default NavigationBar
class HomeApp extends Component {
render() {
return (
<div className="container">
<NavigationBar/>
<Jumbotron/>
</div>
)
}
}
export default HomeApp
class SomeForm extends Component {
render() {
return (<>
<div className="container">
<NavigationBar>
</NavigationBar>
</div>
</>
)
}
}
export default SomeForm
类SomeForm扩展组件{
render(){
返回(
)
}
}
导出默认格式
请遵循以下结构:
从“react router dom”导入{BrowserRouter,Switch,Route}
const导航=()=>(
-
家
-
关于
-
接触
)
作为旁注:你应该永远不要组合
以下是一个现场示例,请遵循以下结构:
从“react router dom”导入{BrowserRouter,Switch,Route}
const导航=()=>(
-
家
-
关于
-
接触
)
作为旁注:你应该永远不要组合
以下是一个位于的实时示例,因为您需要突出显示链接(li)的父元素,您可以使用(或钩住功能组件)导航栏中的react router:
import React, { Component } from 'react';
import { withRouter } from 'react-router';
class NavigationBar extends Component {
constructor(props) {
super(props);
this.renderMenuLink = this.renderMenuLink.bind(this);
}
componentDidMount() {
toggleIcon();
}
renderMenuLink({ path, label }) {
const { location } = this.props;
const isActive = location.pathname === path;
return (
<li key={path} className={`nav-item ${isActive ? 'active' : ''}`}>
<NavLink className="nav-link" to={path}>
{label}{isActive ? <span className="sr-only">(current)</span> : ''}
</NavLink>
</li>
);
}
render() {
const menuLinks = [
{ path: '/', label: 'Home' },
{ path: '/form', label: 'Submit Form' },
{ path: '/register', label: 'Sign Up' },
{ path: '/login', label: 'Login' },
];
return (<div id="topheader">
<nav className="navbar navbar-expand-lg navbar-light bg-light ">
<a className="navbar-brand" href="#">Whatever</a>
<button className="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav"
aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span className="navbar-toggler-icon"></span>
</button>
<div className="collapse navbar-collapse" id="navbarNav">
<ul className="navbar-nav nav nav-pills ml-auto">
{menuLinks.map((menuLink) => this.renderMenuLink(menuLink))}
</ul>
</div>
</nav>
</div>
)
}
}
export default withRouter(NavigationBar);
import React,{Component}来自'React';
从“react router”导入{withRouter};
类导航栏扩展组件{
建造师(道具){
超级(道具);
this.renderMenuLink=this.renderMenuLink.bind(this);
}
componentDidMount(){
切换图标();
}
RenderNulink({path,label}){
const{location}=this.props;
const isActive=location.pathname==path;
返回(
{label}{isActive?(当前):''}
);
}
render(){
常数menuLinks=[
{path:'/',标签:'Home'},
{路径:'/form',标签:'提交表单'},
{路径:'/register',标签:'注册'},
{路径:'/login',标签:'login'},
];
返回(
{menuLinks.map((menuLink)=>this.rendermanulink(menuLink))}
)
}
}
使用路由器导出默认值(导航栏);
由于需要突出显示链接(li)的父元素,您可以使用(或功能组件的挂钩)导航栏中的react router:
import React, { Component } from 'react';
import { withRouter } from 'react-router';
class NavigationBar extends Component {
constructor(props) {
super(props);
this.renderMenuLink = this.renderMenuLink.bind(this);
}
componentDidMount() {
toggleIcon();
}
renderMenuLink({ path, label }) {
const { location } = this.props;
const isActive = location.pathname === path;
return (
<li key={path} className={`nav-item ${isActive ? 'active' : ''}`}>
<NavLink className="nav-link" to={path}>
{label}{isActive ? <span className="sr-only">(current)</span> : ''}
</NavLink>
</li>
);
}
render() {
const menuLinks = [
{ path: '/', label: 'Home' },
{ path: '/form', label: 'Submit Form' },
{ path: '/register', label: 'Sign Up' },
{ path: '/login', label: 'Login' },
];
return (<div id="topheader">
<nav className="navbar navbar-expand-lg navbar-light bg-light ">
<a className="navbar-brand" href="#">Whatever</a>
<button className="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav"
aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span className="navbar-toggler-icon"></span>
</button>
<div className="collapse navbar-collapse" id="navbarNav">
<ul className="navbar-nav nav nav-pills ml-auto">
{menuLinks.map((menuLink) => this.renderMenuLink(menuLink))}
</ul>
</div>
</nav>
</div>
)
}
}
export default withRouter(NavigationBar);
import React,{Component}来自'React';
从“react router”导入{withRouter};
类导航栏扩展组件{
建造师(道具){
超级(道具);
this.renderMenuLink=this.renderMenuLink.bind(this);
}
componentDidMount(){
切换图标();
}
RenderNulink({path,label}){
const{location}=this.props;
const isActive=location.pathname==path;
返回(
{label}{isActive?(当前):''}
);
}
render(){
常数menuLinks=[
{path:'/',标签:'Home'},
{路径:'/form',标签:'提交表单'},
{路径:'/register',标签:'注册'},
{路径:'/login',标签:'login'},
];
返回(
{menuLinks.map((menuLink)=>this.rendermanulink(menuLink))}
)
}
}
使用路由器导出默认值(导航栏);
既然您使用的是react路由器,为什么不使用组件而不是。您还可以查看以下文档:既然您使用的是react router,为什么不使用组件来代替它呢。您还可以查看以下文档:实际上,在本例中,甚至可以代替NavLink,因为您不想格式化活动元素本身。实际上,在本例中,甚至可以代替NavLink,因为您不想格式化活动元素本身