javascript教程 判斷是否為日期函數代碼
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<title>javascript 判斷是否為日期函數代碼</title>
<script language="javascript">
function isDate(dateStr){
var datePat = /^(d{4})(-) (d{1,2}) (-) (d{1,2})$/;
var matchArray = dateStr.match(datePat);
if (matchArray == null) return false;
var month = matchArray[3];
var day = matchArray[5];
var year = matchArray[1];
if (month < 1 || month > 12) return false;
if (day < 1 || day > 31) return false;
if ((month==4 || month==6 || month==9 || month==11) && day==31) return false;
if (month == 2){
var isleap = (year % 4 == 0 && amp; (year % 100 != 0 || year % 400 == 0));
if (day > 29 || (day==29 && !isleap)) return false;
}
return true;
}
</script>
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