document.getElementById("clock").value = time; 传值time和传值attime为什么结果是一样的
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>定时器</title>
<script type="text/javascript">
var attime;
function clock(){
var time=new Date();
attime= setInterval(clock,100) ;
document.getElementById("clock").value = time;
}
</script>
</head>
<body>
<form>
<input type="text" id="clock" size="50" />
</form>
</body>
</html>
发现一个问题:
document.getElementById("clock").value = time;
传值time和传值attime结果是一样的,这个要怎么理解