A proposal for JSX attribute shorthand syntax.
const title = 'something'
const onClick = () => {}
<button onClick= title= />
or:
<button {onClick} {title} />
or:
<button { onClick, title } />
or:
<button {{ onClick, title }} />
instead of (already supported):
<button onClick={onClick} title={title} />
or (also already supported):
<button {...{onClick, title}} />
See also: facebook/jsx#23 (comment)