Java detect if a string is a valid JS script

Question

I want to detect if a string is a valid javasript code for pass it for the evaluation of rhino engine, now i'm assuming that the string is a javascript script with this simple statement :

if(jsString.trim().endsWith(";")) {
//Evaluate with Rhino
}

Is there a better way for figure out if a string is a valid JS script ?

What is the best way ?

What do you mean by "valid JS script"? Pass it to Rhino and if it works, it's valid. — Piotr Praszmo, Oct 13 '11 at 11:01
Cant you just pass it in and catch any exception if it fails and then handle it from there? — Marthin, Oct 13 '11 at 11:05
See also the `ScriptEngine`. Example [here](http://stackoverflow.com/questions/7441625/how-to-find-a-button-source-in-awt-calculator-homework/7441804#7441804). — Andrew Thompson, Oct 13 '11 at 11:19
`jsString.trim().endsWith(";")` BTW - AFAIU a single line script does not need a trailing `;`. — Andrew Thompson, Oct 13 '11 at 11:22

score 1 · Accepted Answer · answered Oct 13 '11 at 11:03

1

You could utilise something like: http://code.google.com/p/jslint4java/

In any case, you want to run the string through JSLint.

answered Oct 13 '11 at 11:03

BGerrissen

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Java detect if a string is a valid JS script

1 Answers1