❗️Что будет на выходе:

function highlight(strings, ...values) {
  return strings.reduce((result, str, i) => {
    const value = values[i] ? `<span>${values[i]}</span>` : '';
    return result + str + value;
  }, '');
}

const language = 'JavaScript';
const years = 10;

const result = highlight`I have been coding in ${language} for ${years} years`;
console.log(result);

Ответ: I have been coding in <span>JavaScript</span> for <span>10</span> years


JavaScript test | #JavaScript & Max

❗️Что будет на выходе:

function greet(name) {
  return `Hello, ${name}!`;
}

function highlight(strings, ...values) {
  return strings.reduce((result, str, i) => {
    return result + str + (values[i] ? `<em>${values[i]}</em>` : '');
  }, '');
}

const user = 'Sarah';
const status = 'online';

console.log(highlight`User ${user} is currently ${status}.`);

Ответ: User <em>Sarah</em> is currently <em>online</em>.

JavaScript test | #JavaScript & Max

❗️Что будет на выходе:

function greet(name) {
  return `Hello, ${name}!`;
}

function highlight(strings, ...values) {
  return strings.reduce((result, str, i) => {
    return result + str + (values[i] ? `<em>${values[i]}</em>` : '');
  }, '');
}

const user = 'Sarah';
const status = 'online';

console.log(highlight`User ${user} is currently ${status}.`);

Ответ: User <em>Sarah</em> is currently <em>online</em>.

JavaScript test | #JavaScript & Max

❗️Что будет на выходе:

const words = ['a', 'b', 'c'];
const result = words.concat(1, 2, 3);
console.log(result);

Ответ: ['a', 'b', 'c', 1, 2, 3]


JavaScript test | #JavaScript & Max

❗️Что будет на выходе:

function* generator1() {
  yield 1;
  yield 2;
}

function* generator2() {
  yield* generator1();
  yield 3;
}

const gen = generator2();
console.log(gen.next().value);
console.log(gen.next().value);
console.log(gen.next().value);

Ответ: 1, 2, 3

JavaScript test | #JavaScript & Max

❗️Что будет на выходе:

const array = Array.from({ length: 5 }, () => Math.random() > 0.5);

console.log(array);

Ответ: An array of 5 random true/false values

JavaScript test | #JavaScript & Max

❗️Что будет на выходе:

function getOrder() {
  console.log('1');
  
  setTimeout(() => console.log('2'), 0);
  
  Promise.resolve().then(() => {
    console.log('3');
    Promise.resolve().then(() => console.log('4'));
  });
  
  Promise.resolve().then(() => console.log('5'));
  
  console.log('6');
}

getOrder();

Ответ: 1 6 3 5 4 2

JavaScript test | #JavaScript & Max

❗️Что будет на выходе:

function* gen() {
  yield 1;
  yield 2;
  yield 3;
}

async function asyncFunc() {
  for (let value of gen()) {
    await new Promise(res => setTimeout(res, 100));
    console.log(value);
  }
  return 'done';
}

const result = asyncFunc();
console.log(result instanceof Promise);

Ответ: true 1 2 3

JavaScript test | #JavaScript & Max

❗️Что будет на выходе:

function createCounter() {
  let count = 0;
  
  function increment() {
    count += 1;
    return count;
  }
  
  function decrement() {
    count -= 1;
    return count;
  }
  
  return { increment, decrement, value: () => count };
}

const counter = createCounter();
counter.increment();
counter.increment();
counter.decrement();

console.log(counter.value() + counter.increment());

Ответ: 3

JavaScript test | #JavaScript & Max

❗️Что будет на выходе:

const numbers = [1, 2, 3, 4, 5];

const result = numbers
  .map(n => n * 2)
  .filter(n => n > 5)
  .reduce((acc, n, index) => {
    acc.sum += n;
    acc.indices.push(index);
    return acc;
  }, { sum: 0, indices: [] });

console.log(result.sum);
console.log(result.indices);

Ответ: 18 [0, 1, 2]

JavaScript test | #JavaScript & Max