CODEWITHSUNDEEP
javascriptjspjstl
ayyappa
ayyappa

Reputation: 121

How to pass Special characters to JavaScript in JSP..?

i know that there is an function Escape() in javascript, escapeXml in JSTL, i used several ways for solving this thing but didnt get the solution. The problem is ..

the JSTL variable suppose say ${str} has value "system # with ^%$ / <".

i pass this value to javascript as OnClick="special('${str}')"

i get an error as:-

Error: unterminated string literal Source File: http://localhost:8080/.. Line: 1, Column: 27 Source Code: special('system # with ^%$ / <

I am not able to pass the string is itself to javaScript.

PS : i copied the above error statement from mozilla error console.

Upvotes: 1

Views: 4112

Answers (1)

Matt Ball
Matt Ball

Reputation: 359816

It sounds like you need to escape the double and single quotes in the string. I'd do this with a function you define, rather than fn:replace() because the quoting is kind of gnarly.

The simplest way to do this is to use the Apache StringEscapeUtils#escapeJavaScript() function.

Escapes the characters in a String using JavaScript String rules.

Escapes any values it finds into their JavaScript String form. Deals correctly with quotes and control-chars (tab, backslash, cr, ff, etc.)

So a tab becomes the characters '\\' and 't'.

The only difference between Java strings and JavaScript strings is that in JavaScript, a >single quote must be escaped.

Example:

input string: He didn't say, "Stop!"
output string: He didn\'t say, \"Stop!\"

So your servlet could do this:

request.setAttribute("str",
    StringEscapeUtils.escapeJavaScript("\"system # with ^%$ / <\""));

Then your JSP can simply contain:

... onclick="'${str}'" ...

You could create a custom EL function to do this as well (using the same escapeJavaScript() function underneath) but that is more complicated.

Upvotes: 2

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