Javascript DOM onmousemove Event difference between the onmousemove, onmouseenter and mouseover events

Introduction

This example demonstrates the difference between the onmousemove, onmouseenter and mouseover events:

The onmousemove event occurs every time the mouse pointer is moved over the div element.</p>

The mouseenter event only occurs when the mouse pointer enters the div element. </p>

The onmouseover event occurs when the mouse pointer enters the div element, and its child elements (p and span).

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<!DOCTYPE html>
<html>
<head>
<style>
div {// w w  w.  j  av a2  s .  co m
  width: 100px;
  height: 100px;
  border: 1px solid black;
  margin: 10px;
  float: left;
  padding: 30px;
  text-align: center;
  background-color: lightgray;
}

p {
  background-color: white;
}
</style>
</head>
<body>
<div onmousemove="myMoveFunction()">
  <p>onmousemove: <br> <span id="demo">Mouse over me!</span></p>
</div>

<div onmouseenter="myEnterFunction()">
  <p>onmouseenter: <br> <span id="demo2">Mouse over me!</span></p>
</div>

<div onmouseover="myOverFunction()">
  <p>onmouseover: <br> <span id="demo3">Mouse over me!</span></p>
</div>

<script>
var x = 0;
var y = 0;
var z = 0;

function myMoveFunction() {
  document.getElementById("demo").innerHTML = z+=1;
}

function myEnterFunction() {
  document.getElementById("demo2").innerHTML = x+=1;
}

function myOverFunction() {
  document.getElementById("demo3").innerHTML = y+=1;
}
</script>

</body>
</html>



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