prevent javascript executing \n

Question

Is it possible to prevent javascript in executing \n from string.

I have string which contains \n (i.e. "ksqOOEe+sqQwexx12lMf31V\nLqW23ds"). This is encrypted string and I have to handle it in Javascript. Problem is that JS break it into two rowns, than browser register Illegal operation. I don't want to escape it with other special characters because it is encrypted string and I have to use decryption process for data reconstruction in next steps.

Javascript wouldn't parse out that \n unless you were eval() or otherwise executing the line - how is this string getting sent to JS? — Marc B
– Marc B, Commented May 31, 2012 at 15:54
no I can't... As I said I need to do decryption operation on that string later in process flow... — jMn
– jMn, Commented May 31, 2012 at 15:54
@MarcB I call web service with Ajax request, and than just put it into element ($.html("<div id="xx" data-id="'+ajaxResponse.encrypted+'">'+ajaxResponse.name+'</div>"); — jMn
– jMn, Commented May 31, 2012 at 15:57
Unless you can guarantee that this encrypted string won't contain " or ' characters, you'll have to escape it, or set the data-id separately so you're not passing the raw string through jquery's HTML parser. — Marc B
– Marc B, Commented May 31, 2012 at 16:02

gcochard · Accepted Answer · 2012-05-31 15:53:14Z

2

Escape the slash so it doesn't see it as an escape sequence. Doing this will tell javascript that it's a literal slash, not store two slashes in the string.

answered May 31, 2012 at 15:53

gcochard

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jMn · Accepted Answer · 2012-06-01 08:50:30Z

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Since I'm using web service and generate encrypted string on Java side, I used URLEncoder to encode it before returning it to the client. Than on next request which contains the same encoded string, I decode it with URLDecoder and than with base64 decoder... It works, and thanks everyone for help :)

answered Jun 1, 2012 at 8:50

jMn

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