85 lines
2.0 KiB
Markdown
85 lines
2.0 KiB
Markdown
### Multiple Checkbox
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##
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Renders a checkbox list with the options provided through `props`.
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Initially, all the items in the `options` array only have label ( and / or other data provided by the user ) and `checked` is `undefined` if not provided. On clicking any of the items, the `checked` value for the item is toggled and state is updated with the new list.
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The checkbox input in this case is kept as `readOnly` since click events are handled for the item ( label + input ) and not the `input` alone. An `onChange` prop can be passed to the `MultiCheckbox` component to get the updated list on every change event within the list.
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```jsx
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export default class MultiCheckbox extends React.Component {
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constructor(props) {
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super(props);
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this.style = {
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listContainer: {
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listStyle: 'none',
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paddingLeft: 0,
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},
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itemStyle: {
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cursor: 'pointer',
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padding: 5,
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}
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}
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this.state = {
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options: props.options,
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}
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}
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toggle = (item) => {
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const { options } = this.state;
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const { onChange } = this.props;
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options.map((_, key) => {
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if(options[key].label === item.label) {
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options[key].checked = !item.checked;
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}
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});
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this.setState({
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options,
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}, () => {
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onChange(options);
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});
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}
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render() {
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const { options } = this.state;
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return (
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<ul style={this.style.listContainer}>
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{
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options.map(item => (
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<li
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style={this.style.itemStyle}
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onClick={() => this.toggle(item)}
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>
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<input
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readOnly
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type="checkbox"
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checked={item.checked || false}
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/>
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{item.label}
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</li>
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))
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}
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</ul>
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)
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}
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}
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```
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```jsx
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const options = [
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{ label: 'Item One' },
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{ label: 'Item Two' }
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];
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ReactDOM.render(
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<MultiCheckbox
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options={options}
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onChange={(data) => {
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console.log(data);
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}}
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/>,
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document.getElementById('root'));
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``` |