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<!DOCTYPE html>
<html>
<body>
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<h2>JavaScript new Date()</h2>
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<p>使用 new Date(<i>milliseconds</i>)，创建一个零时（January 1, 1970, 00:00:00 Universal Time）加毫秒的新日期对象：</p>
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<p id="demo"></p>
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<script>
var d = new Date(0);
document.getElementById("demo").innerHTML = d;
</script>
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</body>
</html>
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