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Code that shows mouse events
<div onmousemove="showCoords(event)" onmousemove="why()" onmouseout="clearCoor()">

<p id="demo"></p>
function showCoords(event) 
  var x = event.clientX;
  var y = event.clientY;
  var coor = "X coords: " + x + ", Y coords: " + y;
  document.getElementById("demo").innerHTML = coor;     

function clearCoor() 
  document.getElementById("demo").innerHTML = "";

function why(event) 
  var x = event.clientX;
  var y = event.clientY;
  if ((x == '40') && (y =='40'))
    document.getElementById("what").innerHTML = "Wow";

function why() does not do what it should which is display message

What I have tried:

changed functions and added more features
Updated 24-Aug-21 3:38am
four systems 24-Aug-21 8:36am

another with vanilla js should display message with mouse co ordinates
Richard Deeming 24-Aug-21 8:52am
1. Include the relevant parts of your code in your question. Do not simply link to another site with all of your code and expect people to visit it and dig through to find the problem.

2. Your question says the function wow doesn't do what it should. But there is no such function in your sample.
Richard MacCutchan 24-Aug-21 8:53am
Where is the code for function wow?
Richard MacCutchan 24-Aug-21 9:01am
You need to put your onmousemove in the body tag as shown in the sample link above:
<body onmousemove="why(event)" onmouseout="clearCoor()">

You also need to check the actual names you are using in the id fields of your HTML. What you have is inconsistent. A few simple corrections and your code works (sort of).
four systems 24-Aug-21 9:26am
the function is why; its raining here
Richard MacCutchan 24-Aug-21 9:41am
I have no idea what that means, or what relevance it has to your question.

1 solution

This sort of works, so you can build on it yourself:
<!DOCTYPE html>

<body onmousemove="showCoords(event)" onmouseout="clearCoor()">
<script type="application/javascript">

  function showCoords(event) {
    var x = event.clientX;
    var y = event.clientY;
    var coor = "X coords: " + x + ", Y coords: " + y;
    document.getElementById("what").innerHTML = coor;

  function clearCoor() {
    document.getElementById("what").innerHTML = "";


<h2>A simple Javascript test</h2>

<p id="what">this is what</p>


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