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May 27, 2017 15:42
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Item/List classes in React
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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
?
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thanks :)