ReactJS - 标记上的未知属性 `activeClassName`。从元素中删除此 Prop

Question

我正在使用react 15.4.2和react-router4.0.0，这个项目是用Create React App引导的.

这是我的代码。

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import {BrowserRouter as Router,Route,Link} from 'react-router-dom'


 const AboutPage = () => {
 return(
    <section>
        <h2>This is About page</h2>
        <Link activeClassName="active" to="/about/nestedone">Nestedone</Link>
        {' '}
        <Link activeClassName="active" to="/about/nestedtwo">Nested two</Link>
    </section>
)
}

const HomePage = () => {
return(
    <section>
        <h2>This is Home page</h2>
        <Link to="/about">About</Link>
    </section>
)
}

const NestedOne = () => {
return (
    <section>
        <h2>Nested page 1</h2>
    </section>
)
}


const NestedTwo = () => {
return (
    <section>
        <h2>Nested page 2</h2>
    </section>
)
}


 ReactDOM.render(
 <Router> 
  <section>
    <Route exact path="/" component={HomePage} />
    <Route path="/about" component={AboutPage} />
    <Route path="/about/nestedone" component={NestedOne} />
    <Route path="/about/nestedtwo" component={NestedTwo} />
 </section>
 </Router>,
  document.getElementById('root')
);

当我浏览 /about 时，出现此错误:

"Warning: Unknown prop activeClassName on tag. Remove this prop from the element.

我在这里做错了什么？

谢谢!

Answer 1

从react-router的v6开始，将activeClassName替换为className并使用navData.isActive切换样式.

<小时/>

旧方法:

<NavLink to="/home" activeClassName="active-style">Home</NavLink>

v6 及以上版本:

<NavLink to="/home" className={(navData) => (navData.isActive ? "active-style" : 'none')}>Home</NavLink>

或者您也可以从 navData 解构 isActive:

 <NavLink to="/home" className={({isActive}) => (isActive ? "active-style" : 'none')}>Home</NavLink>