<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>praise</title>
<script type="text/javascript"src="jquery.min.js"></script>
<style>
.praise {
width: 40px;
height: 40px;
margin: 50px auto;
cursor: pointer;
font-size: 12px;
text-align: center;
position: relative;
}
#praise {
display: block;
width: 40px;
height: 40px;
margin: 0 auto;
}
#praise-txt {
height: 25px;
line-height: 25px;
display: block;
}
.praise img {
width: 40px;
height: 40px;
display: block;
margin: 0 auto;
}
</style>
</head>
<body>
<div class="praise">
<span id="praise"><img src="zan.png"id="praise-img"/></span>
<span id="praise-txt">1455</span>
</div>
<script>
$(function() {
$("#praise").click(function() {
var praise_img = $("#praise-img");
var praise_txt = $("#praise-txt");
var num=parseInt(praise_txt.text());
if(praise_img.attr("src") == ("yizan.png")) {
$(this).html("<img src='zan.png' id='praise-img' />");
num -=1;
praise_txt.text(num)
}
else {
$(this).html("<img src='yizan.png' id='praise-img'/>");
num +=1;
praise_txt.text(num)
}
}
);
}
)
</script>
</body>
</html>
