CODE EXAMPLE FOR JAVASCRIPT

js document.addEventListner

//Syntax
target.addEventListener(type, listener);
//Example 
document.addEventListener("click", modifyText);
//HTML
<table id="outside">
  <tr><td id="t1">one</td></tr>
  <tr><td id="t2">two</td></tr>
</table>
//JavaScript
// Function to change the content of t2
function modifyText(new_text) {
  const t2 = document.getElementById("t2");
  t2.firstChild.nodeValue = new_text;
}
// Function to add event listener to table
const el = document.getElementById("outside");
el.addEventListener("click", function(){modifyText("four")}, false);