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Re: Java code to output escaped Javascript?

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From	Joshua Cranmer <Pidgeot18@verizon.invalid>
Newsgroups	comp.lang.java.programmer
Subject	Re: Java code to output escaped Javascript?
Date	Wed, 01 Jun 2011 10:50:40 -0400
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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

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Thread

Java code to output escaped Javascript? laredotornado <laredotornado@zipmail.com> - 2011-06-01 06:11 -0700
  Re: Java code to output escaped Javascript? Travers Naran <tnaran@gmail.com> - 2011-06-01 07:47 -0700
  Re: Java code to output escaped Javascript? Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-06-01 10:50 -0400
    Re: Java code to output escaped Javascript? "laredotornado@zipmail.com" <laredotornado@gmail.com> - 2011-06-01 09:58 -0700
    Re: Java code to output escaped Javascript? Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-06-02 10:17 +1200
      Re: Java code to output escaped Javascript? Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-06-01 21:47 -0400

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