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Update parent/child communication tip #746

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vjeux merged 1 commit into from
Dec 30, 2013
Merged

Update parent/child communication tip #746

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6 changes: 4 additions & 2 deletions docs/tips/14-communicate-between-components.md
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Original file line number Diff line number Diff line change
Expand Up @@ -18,15 +18,15 @@ var GroceryList = React.createClass({
handleClick: function(i) {
console.log('You clicked: ' + this.props.items[i]);
},

render: function() {
return (
<div>
{this.props.items.map(function(item, i) {
return (
<div onClick={this.handleClick.bind(this, i)} key={i}>{item}</div>
);
}, this)}
}, this)}
</div>
);
}
Expand All @@ -38,3 +38,5 @@ React.renderComponent(
```

Notice the use of `bind(this, arg1, arg2, ...)`: we're simply passing more arguments to `handleClick`. This is not a new React concept; it's just JavaScript.

For communication between two components that don't have a parent-child relationship, you can set up your own global event system. Subscribe to events in `componentDidMount()`, unsubscribe in `componentWillUnmount()`, and when you receive an event call `setState()`.