在我的流星项目中,我有一个名为拍卖的集合。使用react我希望以无限数量的行呈现此次拍卖的3列。为了实现这一点,我认为可以发送对象的索引,但我不知道如何做到这一点。另一个问题是它显示了html代码的错误,因为我没有关闭' div'标签
这是我的App.js:
import React, { Component } from 'react';
import ReactDOM from 'react-dom';
import { withTracker } from 'meteor/react-meteor-data';
import { Auctions } from '../api/auctions.js';
import Auction from './Auction.js';
//App component - represents the whole app
class App extends Component {
renderAuctions() {
return this.props.auctions.map((auction, index) => (
<Auction key={auction._id} auction={auction} index={index} />
));
}
render() {
return (
<div className="container section">
<div className="row">
{this.renderAuctions()}
</div>
</div>
);
}
}
export default withTracker(() => {
return {
auctions: Auctions.find({}).fetch(),
};
})(App);
我的Auction.js:
import React, { Component } from 'react';
//Task component - resepresnts a single todo item
export default class Auction extends Component {
render() {
if(index % 3 === 0) {
return (
</div> /* Shows an erros here because of closing tag*/
<div className="row">
<div className="col s4 ">
<div className="card">
<div className="card-image">
<img src="images/logo.png" />
</div>
<div className="card-content">
<span className="card-title">
{this.props.auction.auctionName}
</span>
<p>
I am a very simple card. I am good at containing small bits of information.
I am convenient because I require little markup to use effectively.
</p>
</div>
<div className="card-action">
<a href="#">This is a link</a>
</div>
</div>
</div>
);
} else {
<div className="col s4">
<h1>Brincoooo</h1>
<div className="card">
<div className="card-image">
<img src="images/logo.png" />
</div>
<div className="card-content">
<span className="card-title">
{this.props.auction.auctionName}
</span>
<p>
I am a very simple card. I am good at containing small bits of information.
I am convenient because I require little markup to use effectively.
</p>
</div>
<div className="card-action">
<a href="#">This is a link</a>
</div>
</div>
</div>
}
}
}
答案 0 :(得分:1)
每次从渲染函数返回HTML时,它都需要自包含且具有平衡标记。这就是React的工作方式,以及它为什么会给你一个错误。
您可以考虑使用flexbox,而不是一次尝试对3个拍卖进行分组。使用flexbox,您只需呈现所有拍卖,并自动为您设置包装。屏幕较宽的用户将看到超过3列,移动用户在纵向模式下可能会看到一列。
如果你想了解flexbox,可以在这里找到一个可爱的教程:https://flexboxfroggy.com/如果你不喜欢那个,有很多教程,例如:https://scotch.io/tutorials/a-visual-guide-to-css3-flexbox-properties < / p>
我允许你从这里开始工作