When you assign an HTML element a mouseout event using JavaScript, and there are child element inside, once you move mouseover the inner child element, the parent mouseout event will trigger. To prevent this from happening, you could use jQuery’s mouseleave event handler. This is very very handy.
Here is a example you can save as a HTML and test:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script src="http://code.jquery.com/jquery-latest.js"></script>
<script>
$(document).ready(function(){
var i = 0;
$("div.overout").mouseout(function(){
$("p:first",this).text("mouse out");
$("p:last",this).text(++i);
}).mouseover(function(){
$("p:first",this).text("mouse over");
});
var n = 0;
$("div.enterleave").mouseenter(function(){
$("p:first",this).text("mouse enter");
}).mouseleave(function(){
$("p:first",this).text("mouse leave");
$("p:last",this).text(++n);
});
});
</script>
<style>
div.out {
width:40%;
height:120px;
margin:0 15px;
background-color:#D6EDFC;
float:left;
}
div.in {
width:60%;
height:60%;
background-color:#FFCC00;
margin:10px auto;
}
p {
line-height:1em;
margin:0;
padding:0;
}
</style>
</head>
<body>
<div class="out overout"><p>move your mouse</p><div class="in overout"><p>move your mouse</p><p>0</p></div><p>0</p></div>
<div class="out enterleave"><p>move your mouse</p><div class="in enterleave"><p>move your mouse</p><p>0</p></div><p>0</p></div>
</body>
</html>
