Stockholm Syndrome

let zaprets1 = (message.$match[1] || '').toLowerCase();

function Calc() {
  let state = {};

  let digits = ['zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine'];
  for (let i = 0, l = digits.length; i < l; i++) {
    Object.defineProperty(this, digits[i], {
      get: function() {
        if (!state.o) {
          state.v = i;
          return this;
        }

        if (state.o === 'plus') state.v = state.v + i; 
        if (state.o === 'minus') state.v = state.v - i; 
        if (state.o === 'times') state.v = state.v * i; 
        if (state.o === 'divide') state.v = state.v / i; 

        return this;
      }
    });
  }

  let operations = ['plus', 'minus', 'times', 'divide'];
  for (let i = 0, l = operations.length; i < l; i++) {
    Object.defineProperty(this, operations[i], {
      get: function() {
        state.o = operations[i]; 
        return this;
      }
    });
  } 

  this.value = function() {
    let {v} = state;
    state = {};
    return v;
  }; 
}

let calc = new Calc();
console.log(calc.one.plus.two.value()); // 3
console.log(calc.one.minus.four.value()); // -3
console.log(calc.one.plus.one.minus.two.value()); // 0
console.log(calc.one.value()); // 1

'https://website.com/sale/3bdr-panora/'.replace(/(\.com\/)/, '$1en/');

class Slider {
  constructor({images, btnPrev, btnNext, rate, time}) {
    this.images = document.querySelectorAll(images);
    this.btnPrev = btnPrev;
    this.btnNext = btnNext;
    this.rate = rate;
    this.time = time || 1000;    
    this.counter = 0; 
   
    document.querySelector(this.btnPrev).onclick = this.prev.bind(this);
    document.querySelector(this.btnNext).onclick = this.next.bind(this);

    if (this.rate) {
      setInterval(this.next.bind(this), this.time);
    }
  }
   
  prev() {
    this.images[this.counter].classList.remove("showed");
    this.counter--;
    if (this.counter < 0) {
      this.counter = this.images.length - 1;
    }
    this.images[this.counter].classList.add("showed");
  }
  
  next() {
    this.images[this.counter].classList.remove("showed");
    this.counter++;
    if (this.counter >= this.images.length) {
      this.counter = 0;
    }
    this.images[this.counter].classList.add("showed");
  }
}

+function(param1, param2) {
  console.log(param1);
}(10, 20);

function checkProps(obj, props) {
  if (!obj) return false; 
  let value = obj; 
  for (let i = 0, l = props.length; i < l; i++) {
    value = value[props[i]];
    if (value == null) return false;
  }
  return true;
}

if (checkProps(campaign, ['budget', 'bills', 'type'])) {}

var n = 0; 
var m = 25; 
var result = [];
while(n < m) {
  result.push(API.users.get({user_ids: n})); 
  n = n + 1;
}
return result;