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import React from 'react' | |
import ReactDOM from 'react-dom' | |
import PropTypes from 'prop-types' | |
// Instead of using a HOC, we can share code using a | |
// regular component with a render prop! | |
class Mouse extends React.Component { | |
static propTypes = { | |
render: PropTypes.func.isRequired | |
} | |
state = { x: 0, y: 0 } | |
handleMouseMove = (event) => { | |
this.setState({ | |
x: event.clientX, | |
y: event.clientY | |
}) | |
} | |
render() { | |
return ( | |
<div style={{ height: '100%' }} onMouseMove={this.handleMouseMove}> | |
{this.props.render(this.state)} | |
</div> | |
) | |
} | |
} | |
const App = React.createClass({ | |
render() { | |
return ( | |
<div style={{ height: '100%' }}> | |
<Mouse render={({ x, y }) => ( | |
// The render prop gives us the state we need | |
// to render whatever we want here. | |
<h1>The mouse position is ({x}, {y})</h1> | |
)}/> | |
</div> | |
) | |
} | |
}) | |
ReactDOM.render(<App/>, document.getElementById('app')) |
Why did you use createClass
for <App />
, but use class
for <Mouse />
?
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Won't it make
this.setState
inaccessible from withinhandleMouseMove
, if you declareonMouseMove
in such way?