isPointExist.js

/**
 * This class provides a functional to find a point inside a specific figure.
 * First of all you have to define a figure coordinates.
 * Then use an appropriate method "check( point )", which will return a result.
 */

class PointManager {
  constructor(setList) {
    this.setX = [];
    this.setY = [];
    setList.forEach((s) => {
      s.forEach((coord, index) => index %2 == 0 ? this.setX.push(coord) : this.setY.push(coord));
    });
  }
  check(point) {
    let xMax = this.getMaxOfArray(this.setX);
    let yMax = this.getMaxOfArray(this.setY);
    let xMin = this.getMinOfArray(this.setX);
    let yMin = this.getMinOfArray(this.setY);
    let x = point.x >= xMin && point.x <= xMax;
    let y = point.y >= yMin && point.y <= yMax;
    return x && y ? "YES" : "NO";
  }
  getMaxOfArray(numArray) {
    return Math.max.apply(null, numArray);
  }
  getMinOfArray(numArray) {
    return Math.min.apply(null, numArray);
  }
}

// Define a new figure instance.
let p1 = new PointManager([[10,20], [20, 30]]);

// Case #1 will return a negative result.
console.log(p1.check({x:5,y:4}));
// Case #2 will return a positive result.
console.log(p1.check({x:10,y:29}));