Implementation Method to Select DIV with JQuery

We set4div. When the mouse moves over a certain div, the background color will change

That is, we should know that we need to use mouseover() and mouseout() before, the former is to move to a certain position, and the latter is to move away from a certain position

There is also a hover(,) that can replace the above two methods

1.use mouseover() and mouseout()

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript" src="jQuery/jquery-1.12.1.js"></script>
<script type="text/javascript">
$(function(){
	$("div[id^='div']").mouseover(function() {
    $(this).css("background-color","red");
    //$("this").css({"background-color":"red"});
 });
	$("div[id^='div']").mouseout(function() {
    $(this).css("background-color","#0FC");
    //$("this").css({"background-color":"#0FC"});
 });
});
</script>
<style type="text/css">
div[id^="div"]
{
	width:300px;
	height:500px;
	background-color:#0FC;
	border:1px solid black;
	float:left;
	margin-left:2px;
}
</style>
</head>
<body>
<div id="div1></div>
<div id="div2></div>
<div id="div3></div>
<div id="div4></div>
</body>
</html>

2.hover()

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript" src="jQuery/jquery-1.12.1.js"></script>
<script type="text/javascript">
$(function(){
	$("div[id^='div']").hover(function(){
		$(this).css("background-color","blue");
		},
		function(){
			$(this).css("background-color","#0FC");
	});
});
</script>
<style type="text/css">
div[id^="div"]
{
	width:300px;
	height:500px;
	background-color:#0FC;
	border:1px solid black;
	float:left;
	margin-left:2px;
}
</style>
</head>
<body>
<div id="div1></div>
<div id="div2></div>
<div id="div3></div>
<div id="div4></div>
</body>
</html>

It can also be written like this

$(function(){
	var In = function(){
		$(this).css("background-color","red");
	}
	var Out = function(){
		$(this).css("background-color","yellow");
	}
	$("p[id^='p']").hover(In,Out);	
});

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