我正在尝试在主页中显示一个页面,可以这么说,通过单击导航栏中的链接,然后在不离开主页的情况下显示“方形”信息。这是我的家:
import React, { Component } from 'react';
import { Link } from 'react-router';
export default class Home extends Component {
var Music = React.createClass({
render: function() {
return (
<div>
<h2> BBB </h2>
</div>
);
}
});
render() {
return (
<div className='Home' id='Home'>
<div id='musicMenu'>
<ul>
<li id="music"><Link to="/music">Music</Link></li>
<li id="shows"><Link to="/shows">Shows</Link></li>
<li id="collections"><Link to="/collections">Collections</Link></li>
</ul>
</div>
</div>
);
}
}
这是我的app.js:
import React from 'react';
import ReactDOM from 'react-dom';
import { Router, Route, IndexRoute, hashHistory } from 'react-router';
import App from 'views/App';
import Home from 'views/Home';
import About from 'views/About';
import Cart from 'views/webcart';
import Music from 'views/music';
import Shows from 'views/shows';
import Collections from 'views/collections';
ReactDOM.render(
<Router history={ hashHistory }>
<Route path='/' component={ App }>
<IndexRoute component={ Home } />
<Route path='about' component={ About } />
<Route path='Cart' component={ Cart } />
<Route path='music' component={ Music } />
<Route path='shows' component={ Shows } />
<Route path='collections' component={ Collections } />
</Route>
</Router>,
document.getElementById('app') // eslint-disable-line
);
我在Webpack中遇到的错误是
ERROR in ./js/views/Home.js
Module build failed: SyntaxError: Unexpected token, expected
并指向var Music
。我该如何解决这个错误?此外,这是最好的方法,或者任何人都可以推荐更好的方法吗?
答案 0 :(得分:0)
var
课程中您不能拥有Home
。 JS
中不允许这样做。将其移到imports
下方的外面。
您要显示的方块是此组件吗?
<div>
<h2> BBB </h2>
</div>
像这样添加名为.invisible
的CSS类
.invisible{
display:none;
}
然后在家state
做类似
this.state = {
showSquare:false
}
在render
<div className='Home' id='Home'>
<div className={this.state.showSquare?'':'invisible'}>
<h2> BBB </h2>
</div>
<div id='musicMenu'>
<ul>
<li id="music"><Link to="/music">Music</Link></li>
<li id="shows"><Link to="/shows">Shows</Link></li>
<li id="collections"><Link to="/collections">Collections</Link></li>
</ul>
</div>
</div>
当invisible
为假时,这样做会使方格this.state.showSquare
成立。然后在导航栏中添加一个更改state.showSquare
<li onClick={this.toggleShowSquare}>Show Square</li>
其中toggleShowSquare()
是
toggleShowSquare(){
this.setState((prevState)=>({showSquare:!prevState.showSquare}))
}
记得做一个
this.toggleShowSquare = this.toggleShowSquare.bind(this)
中的 constructor
编辑:回复评论。 对于多个div,请执行此操作
this.state = {
showSquareOne:false,
showSquareTwo:false
}
然后有像这样的div
<div className={this.state.showSquareOne?'':'invisible'}></div>
<div className={this.state.showSquareTwo?'':'invisible'}></div>
li
这样的元素
<li onClick={()=>this.toggleShowSquare('showSquareOne')}>Show Square One</li>
<li onClick={()=>this.toggleShowSquare('showSquareTwo')}>Show Square Two</li>
和这样的功能
toggleShowSquare(property){
this.setState((prevState)=>({[property]:!prevState[property]}))
}