I have to pass the string '\abcd' to a function. Ofcourse one (or two) extra
'\' is needed to escape but experimenting with it shows that I have to pass
three extra backslashes to make it work.
<script>
var q = "\\\\abcd";
displayLatex(q) ;
</script>
/* this function is in another file */
function displayLatex(q) {
alert(q); /* this shows \abcd when called by above script*/
}
Can anyone explain why this is so? why 4 backslashes?
4  1362 
freelance71 schreef:
I have to pass the string '\abcd' to a function. Ofcourse one (or two) extra
'\' is needed to escape but experimenting with it shows that I have to pass
three extra backslashes to make it work.
<script>
var q = "\\\\abcd";
displayLatex(q) ;
</script>
/* this function is in another file */
function displayLatex(q) {
alert(q); /* this shows \abcd when called by above script*/
}
Can anyone explain why this is so? why 4 backslashes?
I do not understand.
Your script alerts \\abcd over here (on FF), as expected.
There must be more to it than you describe.
Regards,
Erwin Moller
"Erwin Moller"
<Si************ *************** *************** @spamyourself.c omwrote in
message news:48******** *************** @news.xs4all.nl ...
freelance71 schreef:
>I have to pass the string '\abcd' to a function. Ofcourse one (or two)
extra '\' is needed to escape but experimenting with it shows that I have
to pass three extra backslashes to make it work.
<script>
var q = "\\\\abcd";
displayLatex(q );
</script>
/* this function is in another file */
function displayLatex(q) {
alert(q); /* this shows \abcd when called by above script*/
}
Can anyone explain why this is so? why 4 backslashes?
I do not understand.
Your script alerts \\abcd over here (on FF), as expected.
There must be more to it than you describe.
Regards,
Erwin Moller
can it be because I'm using it in a PHP file like this?
<?php
echo <<< HTMLOUT
<script>
var q = '\\\\abcd';
displayLatex(q) ;
</script>
HTMLOUT;
?>
freelance71 schreef:
"Erwin Moller"
<Si************ *************** *************** @spamyourself.c omwrote in
message news:48******** *************** @news.xs4all.nl ...
>freelance71 schreef:
>>I have to pass the string '\abcd' to a function. Ofcourse one (or two)
extra '\' is needed to escape but experimenting with it shows that I have
to pass three extra backslashes to make it work.
<script>
var q = "\\\\abcd";
displayLatex( q);
</script>
/* this function is in another file */
function displayLatex(q) {
alert(q); /* this shows \abcd when called by above script*/
}
Can anyone explain why this is so? why 4 backslashes?
I do not understand.
Your script alerts \\abcd over here (on FF), as expected.
There must be more to it than you describe.
Regards,
Erwin Moller
can it be because I'm using it in a PHP file like this?
Yes. That is the reason.
>
<?php
echo <<< HTMLOUT
<script>
var q = '\\\\abcd';
that becomes:
var q = '\\abcd';
in your HTML.
Simply check your source in your browser to see it.
Regards,
Erwin Moller
>
displayLatex(q) ;
</script>
HTMLOUT;
?>
freelance71 wrote:
>freelance71 schreef:
>>I have to pass the string '\abcd' to a function. Ofcourse one (or two)
extra '\' is needed to escape but experimenting with it shows that I have
to pass three extra backslashes to make it work.
[...]
can it be because I'm using it in a PHP file like this?
<?php
echo <<< HTMLOUT
<script>
var q = '\\\\abcd';
displayLatex(q) ;
</script>
HTMLOUT;
?>
Yes, you have to escape each backslash for use with `echo'. A simple test
(with php -a) shows that
<?php
echo <<<HTML
var q = '\\a';
HTML;
?>
displays only one backslash.
The simple and most efficient solution is to take heed of this general
advice: Do not let the PHP parser do things it does not have to.
<?php
...
?>
var q = '\\a';
<?php
...
?>
(The first and last part are optional, of course.)
F'up2 cl.php
PointedEars
--
realism: HTML 4.01 Strict
evangelism: XHTML 1.0 Strict
madness: XHTML 1.1 as application/xhtml+xml
-- Bjoern Hoehrmann This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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