Legend for Javascript column color usage:
Black: JavaScript matches ActionScript
Red: solution not agreed upon
Blue: solution looks good, need consencus to approve (use Comments or Notes column)
Green: solution agreed upon
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Test Available In FlexJS (+/-)? |
ActionScript |
JavaScript + Closure annotation |
Notes |
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Global Constants |
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Infinity |
- |
Infinity |
Infinity |
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-Infinity |
- |
-Infinity |
-Infinity |
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NaN |
- |
NaN |
NaN |
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undefined |
- |
undefined |
undefined |
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Global Functions |
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Array() |
- |
Array(...values) |
Array(...values) |
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Boolean() |
- |
Boolean(value) |
Boolean(value) |
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decodeURI() |
- |
decodeURI(value) |
decodeURI(value) |
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decodeURIComponent() |
- |
decodeURIComponent(value) |
decodeURIComponent(value) |
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encodeURI() |
- |
encodeURI(value) |
encodeURI(value) |
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encodeURIComponent() |
- |
encodeURIComponent(value) |
encodeURIComponent(value) |
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escape() |
- |
escape(value) |
escape(value) |
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int() |
- |
int(value) |
int(value) |
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isFinite() |
- |
isFinite(value) |
isFinite(value) |
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isNaN() |
- |
isNaN(value) |
isNaN(value) |
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isXMLName() |
- |
isXMLName(value) |
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Number() |
- |
Number(value) |
Number(value) |
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Object() |
- |
Object(value) |
Object(value) |
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parseFloat() |
- |
parseFloat(value) |
parseFloat(value) |
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parseInt() |
- |
parseInt(value, [radix]) |
parseInt(value, [radix]) |
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String() |
- |
String(value) |
String(value) |
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trace() |
- |
trace(...values) |
trace(...values) |
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uint() |
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uint(value) |
uint(value) |
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unescape() |
- |
unescape(value) |
unescape(value) |
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Vector() |
- |
result = Vector.<type>(valueArray); |
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XML() |
- |
XML(value) |
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XMLList() |
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XMLList(value) |
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Classes |
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ArgumentError |
- |
ArgumentError |
ArgumentError |
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arguments |
- |
arguments |
arguments |
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Array |
- |
Array |
Array |
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Boolean |
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Boolean |
Boolean |
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Class |
- |
- |
- |
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Date |
- |
Date |
Date |
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DefinitionError |
- |
DefinitionError |
DefinitionError |
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Error |
- |
Error |
Error |
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EvalError |
- |
EvalError |
EvalError |
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Function |
- |
Function |
Function |
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int |
- |
int |
int |
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JSON |
- |
JSON |
JSON |
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Math |
- |
Math |
Math |
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Namespace |
- |
Namespace |
Namespace |
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Number |
- |
Number |
Number |
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Object |
- |
Object |
Object |
"setPropertyIsEnumerable" not available on JS Object.prototype... |
QName |
- |
QName |
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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? |
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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? |
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Arithmetic |
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+ |
- |
+ |
+ |
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-- |
- |
-- |
-- |
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/ |
- |
/ |
/ |
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++ |
- |
++ |
++ |
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% |
- |
% |
% |
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* |
- |
* |
* |
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- |
- |
- |
- |
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Arithmetic compound assignment |
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+= |
- |
+= |
+= |
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/= |
- |
/= |
/= |
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%= |
- |
%= |
%= |
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*= |
- |
*= |
*= |
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-= |
- |
-= |
-= |
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Assignment |
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= |
- |
= |
= |
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Bitwise |
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& |
- |
& |
& |
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<< |
- |
<< |
<< |
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~ |
- |
~ |
~ |
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| |
- |
| |
| |
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>> |
- |
>> |
>> |
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>>> |
- |
>>> |
>>> |
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^ |
- |
^ |
^ |
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Bitwise compound assignment |
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&= |
- |
&= |
&= |
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<<= |
- |
<<= |
<<= |
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|= |
- |
|= |
|= |
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>>= |
- |
>>= |
>>= |
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>>>= |
- |
>>>= |
>>>= |
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^= |
- |
^= |
^= |
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Comment |
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/**/ |
- |
/**/ |
/**/ |
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// |
- |
// |
// |
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Comparison |
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== |
- |
== |
== |
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> |
- |
> |
> |
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>= |
- |
>= |
>= |
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!= |
- |
!= |
!= |
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< |
- |
< |
< |
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<= |
- |
<= |
<= |
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=== |
- |
=== |
=== |
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!== |
- |
!== |
!== |
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Logical |
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&& |
- |
&& |
&& |
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&&= |
- |
x &&= y |
x = x && y |
Excellent suggestion from Fank: Keep It Simple, Stupid ;-) |
! |
- |
! |
! |
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|| |
- |
|| |
|| |
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||= |
- |
x ||= y |
x = x || y |
KISS, again. |
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Other |
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[] |
- |
[] |
[] |
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as |
- |
as |
? |
I think we need a utility function |
, |
- |
, |
, |
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?: |
- |
(value) ? true : false; |
(value) ? true : false; |
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delete |
- |
delete |
delete |
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. |
- |
. |
. |
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in |
- |
in |
in |
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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 |
:: |
- |
:: |
? |
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new |
- |
new |
new |
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{} |
- |
{} |
{} |
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() |
- |
() |
() |
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/ |
- |
/ |
/ |
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" |
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String |
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+ |
- |
+ |
+ |
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+= |
- |
+= |
+= |
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" |
- |
" |
" |
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XML |
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@ |
- |
@ |
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{} |
- |
{} |
This is the same as used in AS object literals, Mike: can you make the distinction? |
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[] |
- |
[] |
This isthe same as used in AS array literals, Mike: can you make the distinction? |
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+ |
- |
+ |
This isthe same as used the AS concatenation operator: Mike, can you make the distinction? |
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+= |
- |
+= |
This isthe same as used the AS concatenation operator: Mike, can you make the destinction? |
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delete |
- |
delete |
This is the same as used the AS delete operator: Mike, can you make the distinction? |
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.. |
- |
.. |
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. |
- |
. |
This is the same as used the AS access operator: Mike, can you make the distinction? |
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() |
- |
() |
This is the same as used the AS grouping operator: Mike, can you make the destinction? |
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<> |
- |
<> |
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Statements |
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break |
- |
break |
break |
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case |
- |
case |
case |
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continue |
- |
continue |
continue |
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default |
- |
default |
default |
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do...while |
- |
do...while |
do...while |
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else |
- |
else |
else |
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for |
- |
for |
for |
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for...in |
- |
for...in |
for...in |
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for each...in |
- |
for each...in |
? |
We need the compiler to rework the AS loop a bit... (See comment from Frank: https://cwiki.apache.org/confluence/display/FLEX/AS+to+JS+translation+table?focusedCommentId=30745636#comment-30745636 |
if |
- |
if |
if |
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label |
- |
label |
label |
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return |
- |
return |
return |
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super |
- |
super([arg1, ..., argN]); |
goog.base(this, [arg1, ..., argN]); |
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switch |
- |
switch |
switch |
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throw |
- |
throw |
throw |
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try...catch...finally |
- |
try...catch...finally |
try...catch...finally |
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while |
- |
while |
while |
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with |
- |
with |
with |
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Attribute Keywords |
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dynamic |
- |
dynamic |
no annotation needed |
All JS 'classes' are dynamic by nature, so there's no need for this keyword? |
final |
- |
final |
no annotation needed |
Is this a runtime attribute, or is it handled at compile time? If the latter, we can just leave it out as attempts to subclass this type are handled (blocked) on the AS side anyway? |
internal |
- |
internal |
no annotation needed |
Same as with 'final'? |
native |
- |
[not user accessible] |
no annotation needed |
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override |
- |
override function myFunction() |
/** |
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private |
- |
private |
/** |
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protected |
- |
protected |
/** |
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public |
- |
public |
no annotation needed |
All JS entities are public by nature, so there's no need for this keyword? |
static |
- |
static |
check "diff" page |
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Definition keywords |
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... (rest) parameter |
- |
...rest |
[leave out] |
All JS functions allow an arbitrary number of arguments, so there's no need for this keyword? |
class |
- |
class |
function |
Please see "Class" in the Class section, above. |
const |
- |
const |
/** |
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extends |
- |
extends MyBaseClass |
/** Unknown macro: {MyBaseClass}
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function |
- |
function |
function |
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get |
- |
get |
? |
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implements |
- |
implements MyInterface |
/** |
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interface |
- |
interface |
/** |
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namespace |
- |
namespace |
? |
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package |
- |
package my.package |
goog.provides("my.package.MyClass") |
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set |
- |
set |
? |
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var |
- |
var |
var |
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Directives |
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default xml namespace |
- |
default xml namespace |
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import |
- |
import my.package.MyOtherClass |
goog.requires("my.package.MyOtherClass"); |
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include |
- |
include |
? |
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use namespace |
- |
use namespace |
? |
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Namespaces |
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AS3 |
- |
? |
? |
I'm not familiar with this in AS, so can't figure out what, if anything, might 'replace' this in JS. |
flash_proxy |
- |
? |
? |
I'm not familiar with this in AS, so can't figure out what, if anything, might 'replace' this in JS. |
object_proxy |
- |
? |
? |
I'm not familiar with this in AS, so can't figure out what, if anything, might 'replace' this in JS. |
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Primary expression keywords |
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false |
- |
false |
false |
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null |
- |
null |
null |
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this |
- |
this |
Any method in which "this" is referenced should have the following in it's JSDoc block |
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true |
- |
true |
true |
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