Exam 70-480 topic 4 question 91 discussion

Actual exam question from Microsoft's 70-480

Question #: 91
Topic #: 4

You are creating a custom object as described by the following code. Line numbers are included for reference only.

You need to implement the perimeter method.
Which code segment should you insert at line 05?

A. function perimeter () {return 4 * side;}
B. function perimeter () {return 4 * this.side;}
C. function perimeter () {return 4 * me.side;}
D. function perimeter (obj) {return 4 * obj.side;}

Show Suggested Answer

Suggested Answer: B 🗳️
http://creative-coding.decontextualize.com/objects-with-methods/

by BadBot at April 22, 2020, 2:05 p.m.

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BadBot

Highly Voted 5 years, 1 month ago

Poorly formed question. "At line 5" means that you are outside the scope of the square-object. B is correct "inside" the object, D is correct outside.

upvoted 7 times

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Kebo

Most Recent 4 years, 11 months ago

//correct answer B function square(side) { this.side = side; //reference to the perimeter function defined below this.perimeter = perimeter; } function perimeter() { return 4 * this.side } /// const firstSquare = new square(4); //here we call the perimeter as a method of firstSquare this refers to the firstSquareObject firstSquare.perimeter(); //test this code to the console of any browse it works

upvoted 2 times

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Sanfour

5 years ago

no that mean that you have a copy of function perimeter inside the square function function square(side){ this.side=side; this.perimeter = perimeter; console.log(perimeter());} undefined square(4); the result is 16

upvoted 2 times

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