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'); } };
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
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
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 will be the output of the following code? var double = function(x) { return x * 2; }; console.log(double(5));
A). 10
B). 5
C). undefined
D). double
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
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!'); };
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 do you define a function using a function expression?
A). var myFunc = function() { alert('Hello'); };
B). function myFunc() { alert('Hello'); }
C). var myFunc = function { alert('Hello'); };
D). var myFunc() { alert('Hello'); }
What will be the output of the following code? var add = new Function('a', 'b', 'return a + b'); console.log(add(2, 3));
A). 5
B). add
C). undefined
D). 2 3