function lineBreak() {
document.write("<br><br>");
}
function print(phrase) {
document.write(phrase);
lineBreak();
}
let evenNumber = 2;
print("<h1>Numeros pares del 1 al 100</h1>");
while (evenNumber <= 100) {
print(evenNumber);
evenNumber += 2;
}
print("FIN");