Question on "nesting" Javascript

[Michel]

Hi everyone.

I am trying to get this page to work using
<script src="url/test.php?webid=ADSasdfasdwerqy34"> //you get my point

in test.php I do something like this:

var test='hello world.';
document.write(test);
of course this works when I call the first page, it actually displays: hello
world.

But I now want something different. I want an alert coming up.

var test="<SCRIPT>
window.alert('hello world');
</SCRIPT";
document.write(test);

This does absolutely nothing. Can you help me please? I need this to work!

Thx

Michel

[web.dev]

Michel wrote:

Hi everyone.

I am trying to get this page to work using
<script src="url/test.php?webid=ADSasdfasdwerqy34"> //you get my point

in test.php I do something like this:

var test='hello world.';
document.write(test);
of course this works when I call the first page, it actually displays: hello
world.

But I now want something different. I want an alert coming up.

var test="<SCRIPT>
window.alert('hello world');
</SCRIPT";
document.write(test);

replace above with just:

window.alert("hello world");

[Lasse Reichstein Nielsen]

"Michel" <[e-mail]> writes:

But I now want something different. I want an alert coming up.

var test="<SCRIPT>
window.alert('hello world');
</SCRIPT";
document.write(test);

I'll assume you have some reason for adding a new script element
instead of just its content to the current one.

I see two errors in the above.
First of all, a Javascript string literal cannot contain newlines.
Change it to:

var test="<SCRIPT>\n"+
" window.alert('hello world');\n"+
" </SCRIPT";

if you want exactly the same string as you seem to intend.

Second, you are missing an ">" after the "</SCRIPT".
A third potential error can occour if the above code is contained in a
script element in an HTML page, since the content of such ends at the
first occurence of "</". So, in total, change the line to:

var test="<SCRIPT>\n"+
" window.alert('hello world');\n"+
" <\/SCRIPT>";

/L
--
Lasse Reichstein Nielsen - lr*@hotpop.com
DHTML Death Colors: <URL:http://www.infimum.dk/HTML/rasterTriangleDOM.html>
'Faith without judgement merely degrades the spirit divine.'

[Michel]

"web.dev" <we********@gmail.com> wrote in message
news:11*********************@g49g2000cwa.googlegro ups.com...

Michel wrote:

Hi everyone.

I am trying to get this page to work using
<script src="url/test.php?webid=ADSasdfasdwerqy34"> //you get my point

in test.php I do something like this:

var test='hello world.';
document.write(test);
of course this works when I call the first page, it actually displays: hello world.

But I now want something different. I want an alert coming up.

var test="<SCRIPT>
window.alert('hello world');
</SCRIPT";
document.write(test);

replace above with just:

window.alert("hello world");

O you so funny.

Anyone more serious?

[web.dev]

Michel wrote:

"web.dev" <we********@gmail.com> wrote in message
news:11*********************@g49g2000cwa.googlegro ups.com...

Michel wrote:

Hi everyone.

I am trying to get this page to work using
<script src="url/test.php?webid=ADSasdfasdwerqy34"> //you get my point

in test.php I do something like this:

var test='hello world.';
document.write(test);
of course this works when I call the first page, it actually displays: hello world.

But I now want something different. I want an alert coming up.

var test="<SCRIPT>
window.alert('hello world');
</SCRIPT";
document.write(test);

replace above with just:

window.alert("hello world");

O you so funny.

Anyone more serious?

Sorry, perhaps I wasn't being clear enough. In your example, you are
invoking a php file indirectly via javascript, therefore the final
output of the php script needs to be a valid javascript. Therefore you
need to think of it as a dynamic .js file, bounded by the same
limitations as a regular .js file. Thus, to do what you are asking,
just do the following in your php file:

<?php
echo "window.alert('hello world');";
?>

Now of course since it isn't within a function block it will be
executed immediately.

[Thomas 'PointedEars' Lahn]

web.dev wrote:

Michel wrote:

"web.dev" <we********@gmail.com> wrote [...]:

> Michel wrote:
> > I am trying to get this page to work using
> > <script src="url/test.php?webid=ADSasdfasdwerqy34"> //you get my
> > point
> >
> > in test.php I do something like this:
> > [...]
> > But I now want something different. I want an alert coming up.
> >
> > var test="<SCRIPT>
> > window.alert('hello world');
> > </SCRIPT";
> > document.write(test);
>
> replace above with just:
>
> window.alert("hello world");
O you so funny.
ISTM you (Michel) have no fully understood PHP.
Anyone more serious?

Sorry, perhaps I wasn't being clear enough. In your example, you are
invoking a php file indirectly via javascript, therefore the final
output of the php script needs to be a valid javascript. Therefore
you need to think of it as a dynamic .js file, bounded by the same
limitations as a regular .js file.

Correct.
Thus, to do what you are asking, just do the following in your php file:

<?php
echo "window.alert('hello world');";
?>

No, only content within `<?php ...?>' (or `<? ... ?>' with discouraged
short_open_tag=on) is parsed by PHP. Content outside of it is not parsed
by PHP, that is, it is served as-is: valid J(ava)Script code. Therefore
your first approach

window.alert('hello world');

(in the PHP resource, but outside of PHP-parsed content) suffices and is
more efficient than your second approach.

The OP should have tried before he complained.
PointedEars

[Michel]

PointedEars

Let's say I have my reasons to do it the way I am trying to get it
accomplished.

So if you can give any advice that get's me there, thanks
Otherwise, please do me a favor and type stupid remarks in another thread.

M

[Thomas 'PointedEars' Lahn]

Michel wrote:

[my signature]

It is impolite to quote signatures without referring to them.
Let's say I have my reasons to do it the way I am trying to get it
accomplished.
You have not even explained what you expected the code to do and where!
So if you can give any advice that get's me there,
Maybe I even had one.
thanks Otherwise, please do me a favor and type stupid remarks in
another thread.

PLONK

(also for address munging -- another diregardment of Netiquette, and
violation of Internet Standards)

[Michel]

"Thomas 'PointedEars' Lahn" <Po*********@web.de> wrote in message
news:51*****************@PointedEars.de...

Michel wrote:

[my signature]

It is impolite to quote signatures without referring to them.

Let's say I have my reasons to do it the way I am trying to get it
accomplished.

You have not even explained what you expected the code to do and where!

So if you can give any advice that get's me there,

Maybe I even had one.

thanks Otherwise, please do me a favor and type stupid remarks in
another thread.

PLONK

(also for address munging -- another diregardment of Netiquette, and
violation of Internet Standards)

PLonk to you too

[Michel]

var test="<SCRIPT>\n"+
" window.alert('hello world');\n"+
" <\/SCRIPT>";

/L
--
Lasse Reichstein Nielsen - lr*@hotpop.com
DHTML Death Colors: <URL:http://www.infimum.dk/HTML/rasterTriangleDOM.html> 'Faith without judgement merely degrades the spirit divine.'

Hi Lasse,

Can you write me a snippet that works? I can't seem to get it to work
myself.

now:
in test.php I have

<HTML>
<BODY>
<SCRIPT SRC='in.php'></SCRIPT>
</BODY>
</HTML>

and in in.php I have

$test="<SCRIPT>\n"+window.alert('hello world');\n"+<\/SCRIPT>";
document.write($test);

Forget about the file extention. all other scripts are working fine like
this.
I want the alert to pop up then calling test.php

Thank you for your help!

Mich

[Michel]

Found the mistake. Thanks

"Michel" <[e-mail]> wrote in message
news:do**********@news.cistron.nl...

var test="<SCRIPT>\n"+
" window.alert('hello world');\n"+
" <\/SCRIPT>";

/L
--
Lasse Reichstein Nielsen - lr*@hotpop.com
DHTML Death Colors:

<URL:http://www.infimum.dk/HTML/rasterTriangleDOM.html>

'Faith without judgement merely degrades the spirit divine.'

Hi Lasse,

Can you write me a snippet that works? I can't seem to get it to work
myself.

now:
in test.php I have

<HTML>
<BODY>
<SCRIPT SRC='in.php'></SCRIPT>
</BODY>
</HTML>

and in in.php I have

$test="<SCRIPT>\n"+window.alert('hello world');\n"+<\/SCRIPT>";
document.write($test);

Forget about the file extention. all other scripts are working fine like
this.
I want the alert to pop up then calling test.php

Thank you for your help!

Mich

[Lasse Reichstein Nielsen]

"Michel" <[e-mail]> writes:

Can you write me a snippet that works? I can't seem to get it to work
myself. .... and in in.php I have

$test="<SCRIPT>\n"+window.alert('hello world');\n"+<\/SCRIPT>";
document.write($test);
I assume this is what is sent by the PHP page (which is good, we don't
want no steenking PHP in this group :).

Is this valid Javascript?
If not, you should get some errors from your browser when you try it
(and if not, you *should* enable display of errors!)

Another way to check validity is with jslint:
<URL:http://www.crockford.com/jslint/index.html>
In this case, it balks at the "\" in "\n", because it occours outside
of a string. Probably because the string was not begun just
before "window.alert" (or before "<\/SCRIPT>")

Now, since you don't seem to know why you split the string or
why the newlines are there, you might as well not do it. Try just:

var $test = "<script>window.alert('hello world');<\/script>";

Actually, preferably:

var $test = "<script type='text/javascript'>window.alert('hello world');<\/script>";

(on one line, if your newsreader breaks the line, you should get new
one for reading groups where code is posted!)
I want the alert to pop up then calling test.php

What do you mean by "calling test.php"?

You don't call web pages, they are not functions. You request them,
and the response is evaluated on the client in some way.

/L
--
Lasse Reichstein Nielsen - lr*@hotpop.com
DHTML Death Colors: <URL:http://www.infimum.dk/HTML/rasterTriangleDOM.html>
'Faith without judgement merely degrades the spirit divine.'