我需要你的帮助。我想用反应渲染三个标签。问题是:我需要按照他们的订单(1,2,0)对标签进行排序。我在 app.js 中创建了函数 getTabsTitlesInOrder(),我想下载所需的文件并将其分配给适当的内容[" tab&#34 ]。在这种情况下有没有办法下载文件?
已更新
新问题:现在我遇到错误 未捕获错误:对象作为React子对象无效(找到:带键的对象{default})。如果你想渲染一个孩子的集合,请使用数组。 帮我修复它!
我的档案: 的 tabs.json :
{
"tabs": [
{
"title": "tabA",
"order": 1,
"path": "./tabA.js",
},
{
"title": "tabB",
"order": 2,
"path": "./tabB.js",
},
{
"title": "tabC",
"order": 0,
"path": "./tabC.js",
},
]
}
tabA.js ( tabB.js , tabC.js 相同):
import React from 'react';
const TabA = createReactClass({
render: function(){
return(
<div className="tabAContent">
<p>Content of Tab A</p>
</div>
);
}
)};
export default TabA;
app.js :
const tabsJson = require('../tabs.json');
import React from 'react';
import ReactDOM from 'react-dom';
class Tabs extends React.Component{
render(){
return(
<div className="tabs">
{React.Children.map(this.props.children, (child, i) => {
return(
<div
className={"tabTitle " + (child.key === this.props.active ? "tabTitleActive"
: " ")}
onClick={() => {
this.props.onChange(child.key);
}}>
{child}
</div>
);
})}
</div>
);
}
};
class App extends React.Component{
constructor(props) {
super(props);
this.state = {active: 'tab1'};
}
render() {
var firstTabTitle, secondTabTitle, thirdTabTitle;
var content = {};
var requireTab = require.context("./tabs", true, /^.*\.js$/);
const getTabsTitlesInOrder = () => {
for(var i = 0; i < tabsJson.tabs.length; i ++){
switch (tabsJson.tabs[i].order){
case 0:
firstTabTitle = tabsJson.tabs[i].title;
content["tab1"] =
requireTab(tabsJson.tabs[i].path);
break;
case 1:
secondTabTitle = tabsJson.tabs[i].title;
content["tab2"] =
requireTab(tabsJson.tabs[i].path);
break;
case 2:
thirdTabTitle = tabsJson.tabs[i].title;
content["tab3"] =
requireTab(tabsJson.tabs[i].path);
break;
}
}
getTabsContentInOrder (firstTabTitle, secondTabTitle, thirdTabTitle);
};
return(
<div>
<div className="tabButtons">
<Tabs
active = {this.state.active}
onChange = {active => this.setState({active})}
>
<div key="tab1">{firstTabTitle}</div>
<div key="tab2">{secondTabTitle}</div>
<div key="tab3">{thirdTabTitle}</div>
</Tabs>
</div>
<div className="tabContent">{content[this.state.active]}</div>
</div>
);
}
};
ReactDOM.render(
<App />,
document.getElementById('tab')
);
答案 0 :(得分:0)
https://webpack.js.org/guides/dependency-management/#require-context
var requireTab = require.context("./tabs", true, /^tab[A-Z]\.js$/);
...
if (tab === 'A') {
const content = requireTab('tabA')
...