What is the value of c? var a = function(){ this.b = 1; } var b = function(){ this.b = new a().b; return 5; } var c = b() + new b();

What is the value of 'x' after the following code runs? var x; x++;

What will be printed to console? function Foo(){ var foo = 1; bar = 'hello' } var f = new Foo; console.log(f.foo,bar);

Which Array prototype method actually modifies the array it's been called on?

What will be printed in console? var i = function(){ return 10; }(); console.log(i());

Consider the following variable assignments: var a = 144; var p = 3; The operation a >> p yields the same result as:

What's true about the document object in any environment?

What's the output? if we call f(3)? const f = (x, y = true) => x * y;

What is TypeError?

What will be the value of a? let a = -1 ? 'foo' ? null : -1 : 1;

What does ~ mean in bitwise operation?