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Global Constants

Infinity

-

Infinity

Infinity

-Infinity

-

-Infinity

-Infinity

NaN

-

NaN

NaN

undefined

-

undefined

undefined

Global Functions

Array()

-

Array(...values)

Array(...values)

Frank's comment: https://cwiki.apache.org/confluence/display/FLEX/AS+to+JS+translation+table?focusedCommentId=30744800#comment-30744800

Boolean()

-

Boolean(value)

Boolean(value)

See "Array" function note.

decodeURI()

-

decodeURI(value)

decodeURI(value)

decodeURIComponent()

-

decodeURIComponent(value)

decodeURIComponent(value)

encodeURI()

-

encodeURI(value)

encodeURI(value)

encodeURIComponent()

-

encodeURIComponent(value)

encodeURIComponent(value)

escape()

-

escape(value)

escape(value)

int()

-

int(value)

(value >> 0)

isFinite()

-

isFinite(value)

isFinite(value)

isNaN()

-

isNaN(value)

isNaN(value)

isXMLName()

-

isXMLName(value)

?

There is no matching implementation in JavaScript. We may need to build a utility function to cover this one.

Number()

-

Number(value)

Number(value)

See "Array" function note.

Object()

-

Object(value)

Object(value)

In ActionScript, calling 'Object(value)' returns 'value' (since all values are objects). Given that, does it make sense to just write 'value' in JavaScript and let the Closure Compiler "cast" it?

parseFloat()

-

parseFloat(value)

parseFloat(value)

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parseInt()

-

parseInt(value, [radix])

parseInt(value, [radix])

]]></ac:plain-text-body></ac:structured-macro>

String()

-

String(value)

String(value)

See "Array" function note.

trace()

-

trace(...values)

console.log(...values)

We may need a utility function to wrap 'console.log', as not all browsers have debugging enable, and calling to a non-existent 'console' object will cause an error. Maybe something like Jangaroo's 'trace' implementation?

uint()

uint(value)

(value >>> 0)

unescape()

-

unescape(value)

unescape(value)

Vector()

-

result = Vector.<type>(valueArray);

result = /** @type {Array.<type>} */ valueArray;

Let the Closure Compiler handle (check) what is basically a type cast from general Array to a Typed Array.

XML()

-

XML(value)

?

Use 'goog.dom.xml'?

XMLList()

XMLList(value)

?

Use 'goog.dom.xml'?

Classes

ArgumentError

-

ArgumentError

Error

Need utility class and cast a regular error object to that, for the sake of the Closure Compiler?

arguments

-

arguments

arguments

Array

-

Array

Array

Not sure if all properties and methods of AS Array class map to the JS Array class.

Boolean

Boolean

Boolean

Class

-

Date

-

Date

Date

The JS class seems to be missing all the properties that the AS class offers. The methods on both classes match, AFAICT.

DefinitionError

-

DefinitionError

Error

Need utility class and cast a regular Error object to that, for the sake of the Closure Compiler?

Error

-

Error

Error

There is no 'errorID' property on the JS Error class

EvalError

-

EvalError

EvalError

Not sure if all JS VM implementations support this...

Function

-

Function

Function

int

-

int

Number

JSON

-

JSON

JSON

How about support for "older" browsers? Do we provide "if not JSON, add custom JSON to window object"?

Math

-

Math

Math

Namespace

-

Namespace

?

Do we need a utility class?

Number

-

Number

Number

Object

-

Object

Object

"setPropertyIsEnumerable" not available on JS Object.prototype...

QName

-

QName

?

Part of the E4X implementation in AS... No such beast in JS, so maybe we look at "goog" or even a native utility class?

RangeError

-

RangeError

RangeError

Not sure if all JS VM implementations support this...

ReferenceError

-

ReferenceError

ReferenceError

Not sure if all JS VM implementations support this...

RegExp

-

RegExp

RegExp

Does the regular expression "syntax" of both implementations match?

SecurityError

-

SecurityError

Error

Need utility class and cast a regular Error object to that, for the sake of the Closure Compiler?

String

-

String

String

Not sure if all properties and methods of AS String class map to the JS String class.

SyntaxError

-

SyntaxError

SyntaxError

Not sure if all JS VM implementations support this...

TypeError

-

TypeError

TypeError

Not sure if all JS VM implementations support this...

uint

-

uint

Number

Does the Number object provide all "functionality" of an AS uint? If so, we're good, I think...

URIError

-

URIError

URIError

Not sure if all JS VM implementations support this...

Vector

-

Vector

/** @type {Array.<type>} */ Array

Since a Vector is "nothing more" than a typed Array, we can use Closure annotation to 'force' the Closure Compiler to treat it as such.

VerifyError

-

VerifyError

Error

Need utility class and cast a regular Error object to that, for the sake of the Closure Compiler?

XML

-

XML

?

Part of the E4X implementation in AS... No such beast in JS, so maybe we look at "goog" or even a native utility class?

XMLList

-

XMLList

?

Part of the E4X implementation in AS... No such beast in JS, so maybe we look at "goog" or even a native utility class?

Arithmetic

+

-

+

+

--

-

--

--

/

-

/

/

++

-

++

++

%

-

%

%

*

-

*

*

-

-

-

-

Arithmetic compound assignment

+=

-

+=

+=

/=

-

/=

/=

%=

-

%=

%=

*=

-

*=

*=

-=

-

-=

-=

Assignment

=

-

=

=

Bitwise

&

-

&

&

<<

-

<<

<<

~

-

~

~

|

-

|

|

>>

-

>>

>>

>>>

-

>>>

>>>

^

-

^

^

Bitwise compound assignment

&=

-

&=

&=

<<=

-

<<=

<<=

|=

-

|=

|=

>>=

-

>>=

>>=

>>>=

-

>>>=

>>>=

^=

-

^=

^=

Comment

/**/

-

/**/

/**/

//

-

//

//

Comparison

==

-

==

==

>

-

>

>

>=

-

>=

>=

!=

-

!=

!=

<

-

<

<

<=

-

<=

<=

===

-

===

===

!==

-

!==

!==

Logical

&&

-

&&

&&

&&=

-

x &&= y

x = x && y

Excellent suggestion from Fank: Keep It Simple, Stupid ;-)

!

-

!

!

||

-

||

||

||=

-

x ||= y

x = x || y

KISS, again.

Other

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[]

-

[]

[]

]]></ac:plain-text-body></ac:structured-macro>

as

-

as

?

I think we need a utility function

,

  -  

,

  ,

?:

-

(value) ? true : false;

(value) ? true : false; 

delete

  -  

delete

  delete

.

  -  

.

  .

in

  -  

in

  in

instanceof

  -  

instanceof

instanceof

We need to check the "goog" way of inheritance for correctness of the JS 'instanceof' and see if the Closure annotation method for implementing "Interfaces" covers the functionality of AS 'instanceof'. 

is

  -  

is

?

I think we need a utility function 

::

  -  

::

 ?

new

  -  

new

  new

{}

  -  

{}

  {}

()

  -  

()

  ()

/

  -  

/

/

Is the regular expression syntax the same between the two (AS and JS) implementations?  

:

  -

:

multiple solutions, context dependent

To "strongly" type JS, we use the Google Closure annotations. These are JSDoc block that go with function or variable declarations and give the Closure Compiler hints as to the type of variables, arguments and return values.

typeof

-

typeof

typeof

Only the "xml" type is not supported on the JS side (nor are the data types that go with it, XML and XMLList)

void

-

void

void

Note: this applies to 'void' as an operator, not the "data type" typeof

  void

String

+

  -  

+

String +

+=

  -  

+=

+=

"

  -  

"

+= "

"  

XML

@

  -  

@

XML

?

Part of the E4X implementation in AS... No such beast in JS, so maybe we look at "goog" or even a native utility class?

{}

-

@

{}

?

See '@' above, and: these are the same as used in AS object literals, Mike: can you make the distinction?  

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[]

-

[]

?

See '@' above, and: these are the same as used in AS array literals, Mike: can you make the distinction?

]]></ac:plain-text-body><![CDATA[

[]

]]></ac:plain-text-body></ac:structured-macro>

+

+=

delete

..

.

()

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+

-

+

?

See '@' above, and: this is the same as used the AS concatenation operator: Mike, can you make the distinction?

+=

-

+=

?

See '@' above, and: this is the same as used the AS concatenation operator: Mike, can you make the destinction?

delete

-

delete

?

See '@' above, and: this is the same as used the AS delete operator: Mike, can you make the distinction?

..

-

..

?

Part of the E4X implementation in AS... No such beast in JS, so maybe we look at "goog" or even a native utility class?

.

-

.

?

See '@' above, and: this is the same as used the AS access operator: Mike, can you make the distinction?

()

-

()

?

See '@' above, and: this is the same as used the AS grouping operator: Mike, can you make the destinction?

<>

-

<>

?

Part of the E4X implementation in AS... No such beast in JS, so maybe we look at "goog" or even a native utility class?

<>

Statements

break

case

continue

default

do...while

else

for

for...in

for each...in

if

label

return

super

switch

throw

try...catch...finally

while

with

Attribute Keywords

dynamic

final

internal

native

override

private

protected

public

static

Definition keywords

... (rest) parameter

class

const

extends

function

get

implements

interface

namespace

package

set

var

Directives

default xml namespace

import

include

use namespace

Namespaces

AS3

flash_proxy

object_proxy

Primary expression keywords

false

null

this

true

OLD

Inheriting

Implementing

TBD

TBD

Inheriting + Implementing

TBD

TBD

Fields

private

Inside the constructor function:

/**
 * @private
 * @type {string}
 */
this._myVar = '';

protected

This is how far I got today ;-)

public

Global Constants