close
<script>
// 取得當月的第一天和最後一天
var date = new Date(), y = date.getFullYear(), m = date.getMonth();
var firstDay = new Date(y, m - 1, 1);
var lastDay = new Date(y, m, 0);
alert("第一天:"+firstDay.toString());
alert("最後一天:"+lastDay.toString());
</script>
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