Item/List classes in React

gistfile1.js

var Item = React.createClass({
  render: function() {
    return(
      <li>
        ... Item goes here ...
        <input type="checkbox" checked={this.props.selected} onChange={this.onChange} />
      </li>
    );
  },
  onChange: function(event) {
    if (event.target.checked) {
      this.props.onSelect(this.item.id);
    } else {
      this.props.onDeselect(this.item.id);
    }
  }
});

var List = React.createClass({
  getInitialState: function() {
    return {
      selected: {}
    }
  },
  render: function() {
    var items = this.props.items.map(this.renderItem);
    return (
      <ul>
        {items}
      </ul>
    );
  },
  renderItem: function(item) {
    return (
      <Item
        item={item}
        selected={this.selected(item.id)}
        onSelect={this.onSelect}
        onDeselect={this.onDeselect}
    );
  },
  selected: function(itemID) {
    return !!this.state.selected[itemID];
  },
  select: function(itemID) {
    var selected = this.state.selected;
    selected[itemID] = true;
    this.setState({ selected: selected });
  },
  deselect: function(itemID) {
    var selected = this.state.selected;
    delete selected[itemID];
    this.setState({ selected: selected });
  }
})

Thanks for this! Really useful.

One thing - Is the function name on line 45 supposed to be onSelect rather than select?