Which function is used to get input from the user?

Deduce the output of the following code:

<script>

document.write(Boolean("false"))

</script>

Which of the following are possible states of a Promise?

Which of the following operations uses a lot of CPU cycles?

 When a program contains extensive use of event handlers, which of the following is necessary? 

What is the observer effect?

Which of the following is the correct syntax for the indexOf() function in JavaScript?

function compare()
{
   int a=1;
   char b=1;
   if(a.tostring()===b)
       return true;
   else
       return false;
}

What will be the output of the above code?

Which of the following Firefox features shows better runtime performance for coalescing functionality, using functions, and using objects?

The property of JSON() method is __________