Question

Here if

document.write(eval("(2 == 2)"));

it prints true

And

document.write(eval("(2 == 2)&(5<10)"));

it prints 1
Why not it always returns true or false.If conditions increases in string it gives 0 or 1.What is the way to get same type of result.

Answer 1

It prints 1 because you used the bitwise and operator (&) instead of the logical and operator (&&).

And because JavaScript is loosely typed it will treat the boolean value true as an int value of 1, which you can check by invoking

document.write(eval("(2 == 2)+(5<10)"));

the result will be

2