我猜你想要實現一些東西，你可以編輯列，修改或放棄更改，然后根據需要更新內容。
這個例子是本地狀態，但你仍然可以通過獲取數據來做到這一點。
單擊下面的“運行代碼片段”以查看工作示例。
// main.js
const { useState } = React;
const App = () => {
// State
const [data, setData] = useState([{ id: 1, name: 'John', editing: false }, { id: 2, name: 'Kevin', editing: false }]);
// Functions
const onSubmitForm = index => event => {
// To prevent form submission
event.preventDefault();
// To prevent td onClick
event.stopPropagation();
const newData = [...data];
newData[index].name = newData[index].temp;
newData[index].editing = false;
delete newData[index].temp;
setData(newData);
}
const onClickToggleEditing = index => event => {
// To prevent td onClick and button conflicting with each other for toggling back on
event.stopPropagation();
const newData = [...data];
newData[index].editing = !newData[index].editing;
newData[index].temp = newData[index].name;
setData(newData);
}
const onInputChange = index => event => {
const newData = [...data];
newData[index].temp = event.target.value;
setData(newData);
}
// Render
// This basically like having its own component
const editing = ( data, index, onChange, onSubmit, onCancel) => {
const onKeyUp = index => event => {
if (event.key === 'Escape') {
onCancel(index)(event);
}
}
return <form onSubmit={onSubmit(index)}><input onKeyUp={onKeyUp(index)} onClick={e => e.stopPropagation()} type="text" value={data.temp} placeholder="Enter text" onChange={onChange(index)} /><button onClick={onSubmit(index)} type="submit">Save</button><button type="button" onClick={onCancel(index)}>Cancel</button></form>
}
return <main>
<h1>Table Editing</h1>
<p><small>Click to edit cell for <b>Name</b>.</small></p>
<table>
<thead>
<tr>
<th>ID</th>
<th>Name</th>
</tr>
</thead>
{data && data.length > 0 && <tbody>
{data.map((i, k) => <tr key={`row-${k}`}>
<td>{i.id}</td>
<td className="editable" onClick={onClickToggleEditing(k)}>{i.editing ? editing(i, k, onInputChange, onSubmitForm, onClickToggleEditing) : i.name}</td>
</tr>)}
</tbody>}
</table>
<hr />
<p><b>Data Manipulation:</b></p>
<pre><code>{JSON.stringify(data, null, '\t')}</code></pre>
</main>
}
ReactDOM.render(<App />, document.querySelector('#root'));
body {
padding: 0;
margin: 0;
font-family: Arial,sans-serif;
}
main {
padding: 0 20px;
}
h1 {
font-size: 18px;
}
table {
width: 100%;
border-spacing: 0;
}
table tr td,
table tr th {
border: 1px solid #efefef;
height: 30px;
line-height: 30px;
text-align: left;
padding: 6px;
}
table tr th:first-child {
width: 100px;
}
.editable:hover {
background: #efefef;
cursor: pointer;
}
table input {
height: 30px;
line-height: 30px;
font-size: 14px;
padding: 0 6px;
margin-right: 6px;
}
table button {
height: 32px;
border: none;
background: red;
color: white;
font-size: 14px;
padding: 0 10px;
border-radius: 4px;
margin-right: 5px;
cursor: pointer;
}
table button[type=submit] {
height: 32px;
border: none;
background: green;
color: white;
font-size: 14px;
padding: 0 10px;
border-radius: 4px;
}
hr {
border: none;
height: 1px;
background: #999;
margin: 20px 0;
}
pre {
background: #efefef;
padding: 6px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.8.4/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.8.4/umd/react-dom.production.min.js"></script>
<div id="root"></div>
