Na aplikacje internetowe

document.write("z.1");
for (let i = 1; i <= 5; i++) {
  document.write("<br>");
  for (let i = 1; i <= 5; i++) {
    document.write(i + " ");
  }
}

document.write("<br> <br>z.2");

let b = 0;
for (let i = 1; i <= 5; i++) {
  document.write("<br>");
  b++;
  for (let a = b; a <= 5; a++) {
    document.write(a + " ");
  }
}

document.write("<br> <br>z.3 <br>");

let c = prompt("Podaj wartość zmiennej x");
let d = 0;
for (let i = 1; i <= c; i++) {
  document.write(i + " ");
}

let i = 1;
while (i <= c) {
  if (i % 2 === 0) {
    d++;
  }
  i++;
}

document.write("<br>" + d);