Why doesn't this alert("Summer")?
eval('(caption="Summer";alert(caption))');
Does it have something to do with the quotes in "Summer"?
+3
A:
The extra parentheses are wrong, this is correct:
eval('caption="Summer";alert(caption)');
frunsi
2010-02-14 23:36:53
+8
A:
Uncaught SyntaxError: Unexpected token ;
The outer parentheses make no syntactical sense. Try this:
eval('caption="Summer";alert(caption)');
Aistina
2010-02-14 23:37:32
Correct, parentheses (the Grouping Operator) can be used only to evaluate *one expression*, more info: http://bclary.com/2004/11/07/#a-11.1.6
CMS
2010-02-15 01:04:41
+3
A:
Chrome console:
eval('(caption="Summer";alert(caption))')
SyntaxError: Unexpected token ;
This works:
eval('caption="Summer"; alert(caption)')
Jonathon
2010-02-14 23:38:09
A:
A more better way to do this and avoid syntax problem is to do following,
eval(function(){var x="test"; alert(x)}());
Anil Namde
2010-02-15 08:23:18
But here the eval is superfluous. Eval only makes sense if the code to evaluate is available as a string from some source (e.g. ajax call or even user input). But you don't need eval if you already have the code as code. Right?
frunsi
2010-02-15 16:31:27