Виктор Л

let object = {
        param1: true,
        param2: false,
        param3: true
      }

const getFormData = object => {
    const formData = new FormData();
    Object.keys(object).forEach(key => formData.append(key, object[key]));
    return formData;
}


for (let value of getFormData(object).entries()) {
   console.log(value); 
}

const inputs = [...document.querySelectorAll('.input-form')];
      inputs.map(input=>input.addEventListener('input',(e)=>{
        let target = e.target,
            value = target.value;
        console.log(value )
      }));

document.querySelector('#add-saler').addEventListener('submit', (e) => {
  e.preventDefault();
  const formData = Object.fromEntries(new FormData(e.target).entries());
  console.log(formData)
});

Шаблонные литералы заключены в обратные кавычки (` `) вместо двойных или одинарных. Они могут содержать подстановки, обозначаемые знаком доллара и фигурными скобками (${выражение}).

var a = 5;
var b = 10;
console.log(`Fifteen is ${a + b} and not ${2 * a + b}.`);

var maxName = null;
var max = 0; 
var salaries = {
  "John": 100,
  "Pete": 300,
  "Mary": 250
};
console.log(maxName);
(function topSalary() {  
    for(const [name, salary] of Object.entries(salaries)) {
      if (max < salary) {
        max = salary;
        maxName = name;
      }
    } 
    return maxName;
  })()
console.log(maxName);

Дальше сами...
демо

function getDaysArray(year, month) {
    var numDaysInMonth, daysInWeek, daysIndex, index, i, l, daysArray;
    numDaysInMonth = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
    daysInWeek = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
    daysIndex = { 'Sun': 0, 'Mon': 1, 'Tue': 2, 'Wed': 3, 'Thu': 4, 'Fri': 5, 'Sat': 6 };
    index = daysIndex[(new Date(year, month - 1, 1)).toString().split(' ')[0]];
    daysArray = [];
    for (i = 0, l = numDaysInMonth[month - 1]; i < l; i++) {
        daysArray.push({
          year: year,
          month: month,
          number: (i + 1),
          day: daysInWeek[index++]
        })
        if (index == 7) index = 0;
    }
    return daysArray;
}

console.log(getDaysArray(2019, 7))