在React 16.11.0中,我使用map()
了一个简单JSON对象的函数来访问每个元素的值。当ReactDOM呈现时content
,表格将在列中为的每个元素显示值列表data
:
const data = [
{ Name: "Jame", Email: "[email protected]", ID: "1568132456", City: "New York" },
{ Name: "Harris", Email: "[email protected]", ID: "7666487798", City: "Chicago" },
{ Name: "Daisy", Email: "[email protected]", ID: "2177897432", City: "Los Angeles" },
// etc...
];
const Table = ({data}) => {
const head = (
<tr>
<th>Name</th>
<th>Email</th>
<th>ID</th>
<th>City</th>
</tr>
);
const body = data.map(element => (
<tr key={element.ID}>
<td>{element.Name}</td>
<td>{element.Email}</td>
<td>{element.ID}</td>
<td>{element.City}</td>
</tr>
));
return (
<table>
<thead>{head}</thead>
<tbody>{body}</tbody>
</table>
);
};
ReactDOM.render(<Table data={data}/>, document.querySelector('div'));
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script>
<div></div>
该表的输出将在下面显示这些值:
取而代之的是,我想要的是将为每个元素的行显示值,如下表所示:
在这种情况下如何转换表?
为每行创建规则并在这些行上循环,然后在数据上循环:
const data = [
{ Name: "Jame", Email: '[email protected]', ID: "1568132456", City: "New York" },
{ Name: "Harris", Email: '[email protected]', ID: "7666487798", City: "Chicago" },
{ Name: "Daisy", Email: '[email protected]', ID: "2177897432", City: "Los Angeles" },
// etc...
];
const rows = [
{ name: 'Name', render: (item) => item.Name },
{ name: 'Email', render: (item) => item.Email },
{ name: 'ID', render: (item) => item.ID },
{ name: 'City', render: (item) => item.City },
];
const body = rows.map(({ name, render }) => (
<tr key={name}>
<td>{name}</td>
{data.map((item, i) => (
<td key={i}>{render(item)}</td>
))}
</tr>
));
const content = (
<div>
<table>
<tbody>{body}</tbody>
</table>
</div>
);
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