JS functions: complete tasks

01/app.js

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+function showCurrentTime() {
+  const time = new Date().toLocaleTimeString();
+  console.log(time);
+}
+
+showCurrentTime();

02/app.js

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+function sayHello(firstName) {
+  console.log(`Cześć ${firstName}!`);
+}
+sayHello("Natalia");

03/app.js

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+const sumNumbers = function (maxNumber) {
+  let sum = 0;
+  for (let i = 1; i <= maxNumber; i++) {
+    sum = sum + i;
+  }
+  return sum;
+};
+
+console.log(sumNumbers(5));

04/app.js

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+const runTimer = function () {
+  let counter = 0;
+  let timerId = setInterval(function () {
+    const time = new Date().toLocaleTimeString();
+    console.log(time);
+    counter++;
+    if (counter >= 5) {
+      clearInterval(timerId);
+    }
+  }, 5000);
+};
+runTimer();