Which keyword is used to define a class in JavaScript?OptionsclassobjectprototypeClass

What does the this keyword refer to in a JavaScript constructor function?OptionsIt refers to the global objectIt refers to the parent objectIt refers to the first parameter passed to the constructorIt refers to the object being constructed

Which of the following methods can be used to add a class to an HTML element in JavaScript?OptionsaddClass()element.addClass()element.classList.add()element.addClassName()

7What are first-class objects in JavaScript?Review LaterFunctions that can be passed as arguments to other functionsObjects that can be stored in a variableBoth A and BNeither A nor B

What does built-in function type do in context of classes?OptionsDetermines the object name of any valueDetermines class description of any valueDetermines the file name of any valueDetermines the class name of any value

Which of the following is not a valid way to create a new object in JavaScript?OptionsObject.create(proto)new Object(){} (object literal)Object.make()