Consider this code: var x = ['Hello']; What value will 'x[1]' return?

Result of the following expression: var a = 'test'; console.log(!!a);

The loop isn't working. What's the problem? var foos = ['a', 'b', 'c' , 'd', 'e']; var bars = ['x', 'y', 'z']; for (var i = 0; i < foos.length; i++) { var foo = foos[i]; for (var i = 0; i < bars.length; i++) { var bar = bars[i]; /* some code using `bar` */ } }

If a function doesn't explicitly use the 'return' operator, what will the return value be when the function is invoked?

How do you write a conditional statement that will only execute the contained code if variable x has a value 5 of type number?

Value of x? function foo(y) { var z = 10; z = 7; }; var x = foo('bar');

The ____ method repeatedly executes the same code after being called only once.

The ____ metacharacter is used to allow a string to contain an alternate set of substrings.

A(n) ____ is an object that has been created from an existing class.

Value is a function of ___________ and ___________?

To manipulate arrays in your scripts, you use the methods and length property of the ____ class.