Re: Java code to output escaped Javascript?

From:

Joshua Cranmer <Pidgeot18@verizon.invalid>

Newsgroups:

comp.lang.java.programmer

Date:

Wed, 01 Jun 2011 10:50:40 -0400

Message-ID:

<is5jk2$l36$1@dont-email.me>

On 06/01/2011 09:11 AM, laredotornado wrote:

Hi,

I'm using Java 6. I want to output code for a Javascript variable ...

String jsValue = escapeForJS(value);
String expression = "storedVars['myVar'] = \"" + jsValue + "\";";

Is there anything standard that will do this? I came up with my own
function, but I don't want to worry about leaving anything out.

Any Java->JSON library worth its salt should be able to do this.

     /* creates a JS expression that can be used within quotes. */
    private String escapeForJS(String value) {
        value = value.replace("\n", "\\n");
        value = value.replace("\r", "\\r");
        value = value.replace("\"", "\\\"");
        return value;
    }

You also forgot `\' as well as every character in the range
'\u0000'-'\u001f' and '\u007f-\uffff' [if you have to worry about
non-BMP characters, keep in mind that JS is like Java in that it has the
same UCS-2/UTF-16 hairyness].

--
Beware of bugs in the above code; I have only proved it correct, not
tried it. -- Donald E. Knuth