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!'))
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 will be the output of the following code? var multiply = (x, y) => x * y; console.log(multiply(3, 4));
A). 12
B). 34
C). multiply
D). undefined
How can you invoke a function stored in a variable doSomething?
A). doSomething();
B). call doSomething;
C). doSomething[];
D). invoke(doSomething);
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
Which of the following is an example of using a function as a return value?
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'); }; }
Which of the following is an example of an arrow function assigned to a variable?
A). var add = (a, b) => { return a + b; };
B). var add = (a, b) => return a + b;
C). var add = (a, b) => { a + b };
D). var add = (a, b) { return a + b; };
What will be the output of the following code? var counter = (function() { var count = 0; return function() { return ++count; }; })(); console.log(counter()); console.log(counter());
A). 1, 2
B). 0, 1
C). undefined, undefined
D). 2, 4
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 do you define an anonymous function assigned to a variable?
A). var anon = function() { alert('Anonymous!'); };
B). var anon = function { alert('Anonymous!'); };
C). function anon() { alert('Anonymous!'); }
D). var anon = function anonymous() { alert('Anonymous!'); };