这样试下，也可行，是否可以产生互动
function clock(){
document.getElementById("cc").style.color = document.getElementById("cl").value;
}
setInterval("clock()",5000);
</script>
</head>
<body>
<form>
<input type="text" id="cl" size="50" value="blue" />
<input type="text" id="clock" size="50" />
<div style="background:red;width:100px;height:300px" id ="cc" value="1111111">11111</div>
