Update MappedList.md

This commit is contained in:
Angelos Chalaris
2018-10-17 20:31:22 +03:00
committed by GitHub
parent fc726d85a6
commit 8b54ea0cda

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@ -2,17 +2,17 @@
Renders a list of elements from an array of data.
Use the value of the `isOrderedList` prop to conditionally render a `<ol>` or `<ul>` list.
Use the value of the `isOrdered` prop to conditionally render a `<ol>` or `<ul>` list.
Use `Array.prototype.map` to render every item in `data` as a `<li>` element and give it a `key`.
`data` can either be an array of objects with the `id` and `value` properties or an array of primitives.
Omit the `isOrderedList` prop to render a `<ul>` list by default.
Omit the `isOrdered` prop to render a `<ul>` list by default.
```jsx
function MappedList({ isOrderedList, data }) {
function MappedList({ isOrdered, data }) {
const list = data.map((v, i) => (
<li key={v.id ? v.id : i}>{v.value ? v.value : v}</li>
));
return isOrderedList ? <ol>{list}</ol> : <ul>{list}</ul>;
return isOrdered ? <ol>{list}</ol> : <ul>{list}</ul>;
}
```
@ -21,7 +21,7 @@ const names = ['John', 'Paul', 'Mary'];
ReactDOM.render(<MappedList data={names}/>, document.getElementById('root'));
const users = [ { id: 8, value: 'john' }, { id: 3, value: 'paul' }];
ReactDOM.render(
<MappedList data={users} isOrderedList />,
<MappedList data={users} isOrdered />,
document.getElementById('root')
);
```