Functions Used as Variable Values Mockest | JavaScript

11.

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

12.

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"); } };

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13.

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

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14.

How do you create an Immediately Invoked Function Expression (IIFE)?

A). (function() { alert("IIFE"); })(); B). function() { alert("IIFE"); }(); C). (function { alert("IIFE"); })(); D). function() { alert("IIFE"); };

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15.

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

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16.

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

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17.

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"); }

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18.

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

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19.

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"); } };

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20.

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"); }; }

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Functions Used as Variable Values Mocktest

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