How can i pass a string with multiple line to a javascript function?

Question

I have a variable in php

$test = "This is a string
It has multiple lines
there are three total" ;

(Output from a text area)

I want to pass this variable to a javascript function

I have write this in my php file

<?php echo "<script language=javascript>convert('$test');</script>"; ?>

but this makes an error "Unterminated string literal" How can i solve this issue ??

not related to your question but you should use <?php echo "<script language=\"javascript\">convert('$test');</script>"; ?> — Gaurav
– Gaurav, Commented May 3, 2011 at 11:36

stealthyninja · Accepted Answer · 2011-05-03 11:36:55Z

1

Try

$test = "This is a string\nIt has multiple lines\nthere are three total";

answered May 3, 2011 at 11:36

stealthyninja

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Comments

Philippe Gerber · Accepted Answer · 2011-05-03 11:41:47Z

1

<script>convert(<?php echo json_encode($test); ?>);</script>

answered May 3, 2011 at 11:41

Philippe Gerber

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1 Comment

groovenectar Over a year ago

It looks like this even escapes double quotes. Very good solution IMO!

user447356 · Accepted Answer · 2011-05-03 11:37:02Z

0

Try this:

$test = str_replace($test, "\n", "\\n");

answered May 3, 2011 at 11:37

user447356

4 Comments

duri Over a year ago

It should be \\\n which will turn into backslash followed by newline.

user447356 Over a year ago

@duri not sure this is true.. we want \n to be passed literally to the JS function.

duri Over a year ago

Oh, I see. I was thinking of another thing (adding backslash to the end of line would allow Javascript string to cross multiple lines; sorry about that).

user447356 Over a year ago

@duri no sweat, I see what you mean. :-)

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