<p id="p1"></p>
<p id="p2"></p>
<p id="p3"></p>
function p1() {
 document.getElementById("p1").innerHTML  = 'p1 has Done';
}
function p2() {
  setTimeout(
      function() {
        document.getElementById("p2").innerHTML = 'p2 has Done';
      },5000
  )
}
function p3() {
  document.getElementById("p3").innerHTML = "p3 has Done";
}

p1();
p2();
p3();

External CSS

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External JavaScript

This Pen doesn't use any external JavaScript resources.