JSX version 1.1 - non-breaking changes #117

Some features has been proposed before, but nothing seems to be happening even though they get upvoted.

Would it be easier if we think in terms of non-breaking changes to update the JSX specification?

E.g. I believe this is a non-breaking addition to the JSX specification.

<Foo bar=2 />
#64

In JSX 1.1 you would then have the options

<Foo bar=2 />
<Foo bar={2} />

JSX 1.0 (current version) you have the option

<Foo bar={2} />

Option 1: <Foo bar=2 /> this could be evaluated to an AssignmentExpression without the { }

The generated AST should be identical for

<Foo bar=2 /> and <Foo bar={2} />

Option 2: We could extend allowed values for JSXAttributeValue
https://facebook.github.io/jsx/

JSXAttributeValue :

• JSXNumber
• JSXDoubleStringCharacters "
• JSXSingleStringCharacters '
• AssignmentExpression {}
• JSXElement <
• JSXFragment <

The definition of JSXNumber could be typeof number

e.g.

2, 0x10, NaN

Could this be generalised?
Allow non-breaking changes where we omit the brackets for JSXAttributeValue?

e.g.

<Button 
  onClick = { onCreate } 
  id = { 123 } 
  zIndex = { 1 } 
  onMouseOver = { onMouseOverCreateButton }>
    Create
</Button>

Could also be

<Button 
  onClick = onCreate  
  id = 123  
  zIndex = 1 
  onMouseOver = onMouseOverCreateButton>
    Create
</Button>

Languages evolves and gets updated.

I see JSX as an essential part of React that makes it popular and loved.
I hope the JSX specification evolves over time. Even if is small minor syntax sugar improvements.