Why next code is valid Javascript code?
var global = (1,eval)('this');
alert(global);
Why next code is valid Javascript code? var global = (1,eval)(‘this’); alert(global);
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Why next code is valid Javascript code?
var global = (1,eval)('this');
alert(global);
That’s because the comma operator returns its second operand (and evaluates both).
The code in your question is equivalent to: