Optional param in a javascript fct

[JellyON]

Hello everybody. I'm trying to use an optional parameters in a
javascript function and don't succeed.

If I believe in the page at <http://www.mozilla.org/js/language/js20-
2002-
04/core/functions.html#N-Parameter>, it's possible at least in
Javascript 2.0 (don't know for the others versions).

Here is what I do :

<script language="JavaScript"><!--
function Test(a,b=100){alert("a=" & a & ", b=" & b);}
//--></script>

And, too, with <script language="JavaScript2.0">.

And it doesn't work. The javascript console binded with Mozilla indicate
the "=" as being an error, telling it wait a ")" after the formal
parameters

I've tried differents syntax too, without success(example : function
Test(a,b:Integer=100)).

How to proceed ? And, do these optional params specific to javascript
2.0 ?

[Michael Winter]

On 10/07/2005 15:33, JellyON wrote:

I'm trying to use an optional parameters in a javascript function and
don't succeed.

Optional arguments are not implemented in current browsers. However, you
can produce the same effect yourself:

function Test(a, b) {
if('undefined' == typeof b) {b = 100;}

/* ... */
}

[snip]

Mike

--
Michael Winter
Prefix subject with [News] before replying by e-mail.

[Martin Honnen]

JellyON wrote:

If I believe in the page at <http://www.mozilla.org/js/language/js20-
2002-
04/core/functions.html#N-Parameter>, it's possible at least in
Javascript 2.0 (don't know for the others versions).

JavaScript 2.0 is a design but so far not a language implemented in
existing browsers.

--

Martin Honnen
http://JavaScript.FAQTs.com/

[VK]

> Here is what I do :

<script language="JavaScript"><!--
function Test(a,b=100){alert("a=" & a & ", b=" & b);}
//--></script>

What mf did learn you to do such things any way? Even Bezerkly system
doesn't imply it. What school are you from? Street mf's society?

[JellyON]

In article <42***********************@newsread4.arcor-online.net>,
ma*******@yahoo.de says...

JellyON wrote:

If I believe in the page at <http://www.mozilla.org/js/language/js20-
2002-
04/core/functions.html#N-Parameter>, it's possible at least in
Javascript 2.0 (don't know for the others versions).

JavaScript 2.0 is a design but so far not a language implemented in
existing browsers.

Oups ! I better understand now. Thanks

[JellyON]

In article <GB******************@text.news.blueyonder.co.uk >,
m.******@blueyonder.co.uk says...

On 10/07/2005 15:33, JellyON wrote:

I'm trying to use an optional parameters in a javascript function and
don't succeed.

Optional arguments are not implemented in current browsers. However, you
can produce the same effect yourself:

function Test(a, b) {
if('undefined' == typeof b) {b = 100;}

/* ... */
}

[snip]

Mike

Nice, i'll go this way. Thanks a lot Mike

[JellyON]

In article <11**********************@o13g2000cwo.googlegroups .com>,
sc**********@yahoo.com says...

Here is what I do :
<script language="JavaScript"><!--
function Test(a,b=100){alert("a=" & a & ", b=" & b);}
//--></script>

What mf did learn you to do such things any way? Even Bezerkly system
doesn't imply it. What school are you from? Street mf's society?

Simply not used to use javascript, but open minded, anyway ;-)

[VK]

sorry, it was a bad day I guess.