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  1. Prepare
  2. Tutorials
  3. 10 Days of Javascript
  4. Day 4: Classes
  5. Discussions

Day 4: Classes

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280 Discussions

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  • praveen111890
     + 0 comments

    class Polygon { constructor(sides) { this.sides = sides; } }

    Polygon.prototype.perimeter = function() { let sum=0; this.sides.forEach(side=> sum += side); return sum; }

  • Bye_Shuvo
     + 0 comments

    This is my Solution . I tried to use the reduce() method to sum the element , in this case the numbers in the give array. the method takes a callback function as well as the array itself(optional) for which we call the reduce() , the callback function takes 3 param. (previousValue , currentIndexValue , currentIndex(optional) ) and return the result (a number) . class Polygon{ constructor(lenghts){
    this.lenghts = lenghts; } perimeter(){ return this.lenghts.reduce((total , currentValue)=>{return total + currentValue }) } }

  • abhinavg916
     + 0 comments
    class Polygon {
    constructor(sides) {
        this.sides = sides;
    }
    
    perimeter() {
        return this.sides.reduce((acc, curr)=> acc+curr, 0);
    }
}

  • karenbanci1
     + 0 comments
    class Polygon {
  constructor(length) {
    this.length = length;
  }

  perimeter() {
    let sum = 0;
    for (let i = 0; i < this.length.length; i++) {
     sum += this.length[i];
    }
		
		
    return sum;
  }
}

  • tomas_bajarunas
     + 0 comments

    "Singleton Class Using a Function" has incorrect information in the "Topics".

    The given example creates an object, similarly as if one would do:

    myObject = {a:1};

    It doesn't create a singleton.