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41

eval javascript, check for syntax error

rated 0 times [ 45] [ 4] / answers: 1 / hits: 58922 / 14 Years ago, mon, february 7, 2011, 12:00:00

I wanted to know if it is possible to find through javascript if a call to eval() has a syntax error or undefined variable, etc... so lets say I use eval for some arbitrary javascript is there a way to capture the error output of that eval?

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leandraannabellar

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1 Year ago

answered 14 Years ago micayla · Accepted Answer

You can test to see if an error is indeed a SyntaxError.

try {

    eval(code); 

} catch (e) {

    if (e instanceof SyntaxError) {

        alert(e.message);

    }

}