What is the purpose of the this keyword in an object method?
A). It refers to the global object.
B). It refers to the current object.
C). It refers to the parent object.
D). It refers to the previous object.
How do you add a new property to an existing object in JavaScript?
A). object.property = value;
B). object->property = value;
C). object:property = value;
D). object.addProperty('property', value);
What will the following code output? console.log(car.make); if var car = {make: 'Honda', model: 'Civic'};
A). Honda
B). Civic
C). Undefined
D). Error
Which method can be used to call a function defined within an object?
A). object.functionName();
B). object->functionName();
C). object::functionName();
D). object.callFunction('functionName');
In JavaScript, what keyword is used to define a new object from a constructor function?
A). create
B). construct
C). new
D). object
What does Object.keys(obj) return?
A). An array of the values of the object's properties
B). An array of the names of the object's properties
C). The first key of the object
D). The number of properties in the object
How do you create a method inside an object using an object literal?
A). methodName: function() {}
B). methodName = function() {}
C). methodName: () {}
D). methodName: method() {}
What will car['make'] return if var car = {make: 'Ford', model: 'Mustang'};?
A). Ford
B). Mustang
C). Undefined
D). Error
What is encapsulation in the context of JavaScript objects?
A). Hiding the internal state and requiring all interaction to be performed through an object's methods
B). Extending one object from another
C). Creating a new object
D). Removing a property from an object
How do you define a method inside a class in JavaScript ES6?
A). methodName() {}
B). this.methodName = function() {}
C). function methodName() {}
D). methodName: function() {}