Which of the following will correctly check if an object is an array? (check all that apply)

The following global properties return a value and they have no properties/methods?

Document Properties in W3C DOM, supports all the properties available in Legacy DOM?

Javascript provides the following functions to be frequently used in animation programs?

The replacement string can include the following special replacement patterns?

Which are the valid JavaScript codes to obtain the number of milliseconds since the epoch?

What value is assigned to x: var x = (1, 2, 3);

What values are assigned to x and y: var x = (0.1 + 0.2) == 0.3; var y = (0.1 + 0.1) == 0.2;

What's the output? (function() { var a = b = 1; })(); console.log (typeof b);

The following one line function will return true if str is a palindrome; otherwise, it returns false. function isPalindrome(str) { str = str.replace(/\W/g, '').toLowerCase(); return (str == str.split('').reverse().join('')); }

You want a dictionary-like data object such that you can give it the word to look up and it gives you the definition. Which of the following would create such an object and log a look-up to the console?