How can you pass a function as an argument to another function?
A). performAction(function() { alert('Action!'); });
B). performAction(function { alert('Action!'); });
C). performAction(function() alert('Action!'););
D). performAction(function() alert('Action!'))
Which of the following correctly demonstrates a function returning another function?
A). function outer() { return function() { alert('Inner'); }; }
B). function outer() { function() { alert('Inner'); } return; }
C). function outer() { function() { alert('Inner'); }; }
D). function outer() { return function { alert('Inner'); }; }
What will be the output of the following code? var sayHi = function() { return 'Hi'; }; console.log(sayHi());
A). Hi
B). undefined
C). sayHi
D). function
What is the output of the following code? var person = { name: 'Alice', greet: function() { return 'Hello, ' + this.name; } }; console.log(person.greet());
A). Hello, Alice
B). Hello, undefined
C). Hello, name
D). undefined
Which of the following is true about functions in JavaScript?
A). Functions can be assigned to variables
B). Functions can be passed as arguments to other functions
C). Functions can be returned from other functions
D). All of the above
How do you assign a function to a variable in JavaScript?
A). var greet = function() { alert('Hello'); };
B). var greet = function { alert('Hello'); };
C). function greet() { alert('Hello'); }
D). var greet = function alert('Hello');
What is the output of the following code? function makeAdder(a) { return function(b) { return a + b; }; } var add5 = makeAdder(5); console.log(add5(2));
A). 7
B). 5
C). add5
D). makeAdder
How can you store a function as a property of an object?
A). var obj = { method: function() { alert('Hello'); } };
B). var obj = { method: alert('Hello'); };
C). var obj = { method: function { alert('Hello'); } };
D). var obj = { function() { alert('Hello'); } };
What is the term for a function that is passed as an argument to another function?
A). Callback function
B). Nested function
C). Helper function
D). Inner function
How can you define a method inside an object?
A). var obj = { method: function() { alert('Hello'); } };
B). var obj = { method() { alert('Hello'); } };
C). Both A and B
D). var obj = { function method() { alert('Hello'); } };