The cookie attribute which will return boolean value is _____

What data type does the async attribute optionally accept?

A Closure Compiler UI is _____.

What is the code snippet to go back two steps in the browser history?

Which function among the following allows you to register a function to be invoked once?

What will be the output of the following code?

var x = 2;
function f() {
 var x = y = 1;
}
f();

console.log(x, y);

What is the purpose of a Rendering Engine?

How to insert a new node (node 1) as a child before another node (node 2)?

What does Rhino do when the getter and setter methods exist in Java classes?

 The purpose of extensible attribute is to __________