why????
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js" type="text/javascript"></script>
<link href="style.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="divtest">
<div class="title">
<span class="fl">检测数字是否大于0</span>
<span class="fr"><input id="btnCheck" type="button" value="检测" /></span>
</div>
<ul>
<li>请求输入一个数字 <input id="txtNumber" type="text" size="12" /></li>
</ul>
</div>
<script type="text/javascript">
$(function () {
$("#btnCheck").bind("click", function () {
$.post("http://www.imooc.com/data/check_f.php",{
num:$("#txtNumber").val()
},
function (data) {
$("ul").append("<li>你输入的<b> "
+ $("#txtNumber").val() + " </b>是<b> "
+ data + " </b></li>");
});
})
});
</script>
</body>
</html>
