<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<meta charset="utf-8" />
<script src="scripts/jquery-2.1.4.min.js"></script>
<script type="text/javascript">
$(function () { alert($("#div1").html()); });
$(function () { $("#div1").css("background", "red") });
$(function () { alert($("#div1").css("background")); }); //这行的red为何打印出来是空的
$(function () { $("#txt").val(new Date()) });
$(function () { alert($("#txt").val()); });
</script>
</head>
<body>
<div id="div1">
你好呀<font color="red">,朋友</font>
</div>
<input type="text" id="txt" />
</body>
</html>