Егор Живагин

let ordersCount = ~~(diffMinutes / (60 / countOfHour)) + startCountOrders;

let startDate = new Date(2019, 0, 28, 12, 0)
let startCountOrders = 100;
let countOfHour = 2;

let diffMS = Date.now() - startDate;
let diffMinutes = diffMS / 1000 / 60;
let ordersCount = ~~(diffMinutes / (60 / countOfHour)) + startCountOrders;
alert(`Кол-во заказов ${ordersCount}`);

const inputSelector = '#icons_care';
const checkboxSelector = '.check_care';
const checkboxCheckedSelector = `${checkboxSelector}:checked`;
const dataAttr = 'icon';
const separator = ', ';

$(document).on('change', checkboxSelector, () => {
  $(inputSelector).val($(checkboxCheckedSelector)
    .get()
    .map(n => $(n).data(dataAttr))
    .join(separator)
  );
});

// или

document.addEventListener('change', e => {
  if (e.target.matches(checkboxSelector)) {
    const input = document.querySelector(inputSelector);
    const cb = document.querySelectorAll(checkboxCheckedSelector);
    input.value = Array.from(cb, n => n.dataset[dataAttr]).join(separator);
  }
});

if (Date.now() - Number(name.split('___')[1]) >= 10000) {

class Buttons extends Component {
  state = {
    foo: 'bar'
  }

  changeText = () => {
    if (this.state.foo === 'bar') {
      this.setState({ foo: 'foo' })
    } else {
      this.setState({ foo: 'bar' })
    }
  }     

  render() {
    return (
      <Button text={this.foo} />
      <Button text={this.foo} />
      <Button text={this.foo} />
      <Button text={'Изменить текст'} onClick={this.changeText} />
    )
  }
}

this.setState(({small}) => {
    return {
        small: small
    }
});

this.setState(({ small }) => ({
  small: !small,
}));

const obj = {}

obj['z'] = {}
obj['a'] = {}
obj['b'] = {}

for (var property in obj) {
    if (obj.hasOwnProperty(property)) {
        console.log(property) // "z" "a" "b"
    }
}

obj['1'] = {}
obj['0'] = {}
for (var property in obj) {
    if (obj.hasOwnProperty(property)) {
        console.log(property) // "0" "1" "z" "a" "b"
    }
}

const map = new Map()

map.set('z', {})
map.set('a', {})
map.set('b', {})
map.forEach((val, key) => {
  console.log(key) // "z" "a" "b"
})

map.set('1', {})
map.set('0', {})
map.forEach((val, key) => {
  console.log(key) // "z" "a" "b" "1" "0"
})