Сергей delphinpro

document.body.style.backgroundColor=theme_config['--back-color']

console.log(parseFloat((0.2 + 0.1).toFixed(3)));      // 0.3
console.log(parseFloat((0.21 + 0.14).toFixed(3)));   // 0.35

console.log(Number(Math.round((0.2 + 0.1)+'e'+3)+'e-'+3));      
console.log(Number(Math.round((0.21 + 0.14)+'e'+3)+'e-'+3));

console.log(Math.round((0.2 + 0.1) * 100) / 100); 
console.log(Math.round((0.21 + 0.14) * 100) / 100);

['name', 'socialname', 'numberfo', 'email', 'text'].forEach(name => {
  let input = document.querySelector(`[name='${name}']`);
  input.value = escape(input.value);
});

if (event.code === 'Enter') {
  textArea.textContent += '\n'
};

const student = {
    name   : 'Sasha',
    age    : 46,
    surname: 'Belov',
  };
  const studentCS = { ...student };
  studentCS.speiality = 'Computer Science';

  const courses = {
    Math   : 10,
    English: 9,
    Sport  : 8,
  };
  const permissions = {
    canView : true,
    canEdit : false,
    canPrint: true,
  };
  Object.assign(studentCS, courses, permissions);
  console.log(studentCS);

  studentCS.average = function () {
    return (this.Math + this.Sport + this.English) / 3;
  };
  studentCS.checkPermission = function () {
    return [
      this.canView,
      this.canEdit,
      this.canPrint,
    ].filter(i => i).length;
  };
  console.log('Score: ' + studentCS.average());
  console.log('Number of enabled rights: ' + studentCS.checkPermission());

const servicesList = document.querySelector('.services__сategory');
const activeClass = "active-category";

servicesList.addEventListener("click", function(event) {
  const element = event.target.closest(".category-item");
  if (!element) return;

  const activeElement = element.parentElement.querySelector(".active-category");
  
  if (element !== activeElement) {
    activeElement.classList.remove(activeClass);
    element.classList.add(activeClass);
  }
});