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用js -- interval 实现当前时间

2015-08-23 14:47 627 查看
<body>
<span id="year"></span><span>年</span>
<span id="month"></span><span>月</span>
<span id="date"></span><span>日</span>
<span id="hour"></span><span>:</span>
<span id="minute"></span><span>:</span>
<span id="second"></span>
</body>
<script type="text/javascript">
function now() {
var dt = new Date();
document.getElementById("year").innerHTML = dt.getFullYear();
document.getElementById("month").innerHTML = dt.getMonth() + 1;
document.getElementById("date").innerHTML = dt.getDate();
document.getElementById("hour").innerHTML = dt.getHours();
document.getElementById("minute").innerHTML = dt.getMinutes();
document.getElementById("second").innerHTML = dt.getSeconds();
}
now();
setInterval("now()", 1000);
</script>
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