Which of the following is a method of the Object constructor in JavaScript?Review LaterObject.entries()Object.values()Object.keys()All of the above

Which of the following is a valid way to declare an object in JavaScript?

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

Which of the following is a valid way to declare an object in JavaScript?Points:1All of the above{name: "John", age: 30}Object.create({name: "John", age: 30})new Object({name: "John", age: 30})I don't know

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

What does the Object.keys(obj) method return in JavaScript?OptionsThe object's prototypeThe object itselfAn array of the object's own enumerable property namesAn array of all properties, including non-enumerable ones