JavaScript

❓ CHALLENGE #207

var a = 1
function output () {
    console.log(a)
    var a = 2
    console.log(a)
}
console.log(a)
output()
console.log(a)

🤔

❓ CHALLENGE #206

for (var i = 0; i < 3; i++) {
  const log = () => {
    console.log(i)
  }
  setTimeout(log, 100)
}

☠️

❓ CHALLENGE #205

function asyncFunction(value) {
  return new Promise(resolve => {
    setTimeout(() => {
      console.log(value);
      resolve(value);
    }, 1000);
  });
}

(async () => {
  const results = await Promise.all([asyncFunction(1), asyncFunction(2), asyncFunction(3)]);
  console.log(results);
})();

CHALLENGE #204

const emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
const emails = ["user@example.com", "john.doe@gmail.", "invalid-email", "info@company.org"];

const validEmails = emails.filter(email => emailPattern.test(email));

console.log(validEmails);

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CHALLENGE #203

const asyncFunction = async () => {
  try {
    await Promise.reject("Oops!");
  } catch (error) {
    return "Caught: " + error;
  } finally {
    return "Finally block executed";
  }
};

asyncFunction().then(result => console.log(result));

❓ CHALLENGE #202

let a = 1;
{
  let a = 2;
}
a+=1;
console.log(a);

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