<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8">
<script src="http://libs.useso.com/js/jquery/1.9.1/jquery.min.js"></script>
<script>
$(document).ready(function () {
$("#st").click(function () {
if($("#btncode").attr("disabled")=="disabled"){
$("#btncode").attr("disabled", false);
alert("11111111111111111111");
}
else{
$("#btncode").attr("disabled", true);
alert("2222222222222222222222");
}
})
});
</script>
</head>
<body>
<input id="btncode" type="button" value="显示按钮"/>
<input id="st" type="button" value="设置按钮" />
</body>
</html>
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