Posted in Javascript onMarch 25, 2007
最简单的
function isValidDate(dateStr) { var matchArray = dateStr.match(/^[0-9]+-[0-1][0-9]-[0-3][0-9]$/) if (matchArray == null) { alert("Invalid date: " + dateStr); return false; } return true; } function isValidDate(dateStr) { var matchArray = dateStr.match(/^[0-9]+-[0-1][0-9]-[0-3][0-9]$/) if (matchArray == null) { alert("Invalid date: " + dateStr); return false; } return true; }
第二种
<script language=javascript> String.prototype.isDate = function() { var r = this.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/); if(r==null)return false; var d = new Date(r[1], r[3]-1, r[4]); return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]); } alert("2002-01-31".isDate()); alert("2002-01-41".isDate()); </script> <script language=javascript> String.prototype.isDate = function() { var r = this.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/); if(r==null)return false; var d = new Date(r[1], r[3]-1, r[4]); return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]); } alert("2002-01-31".isDate()); alert("2002-01-41".isDate()); </script>
第三种,比较复杂的
<script language=javascript> String.prototype.isTime = function() { var r = this.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2}) (\d{1,2}):(\d{1,2}):(\d{1,2})$/); if(r==null)return false; var d = new Date(r[1], r[3]-1,r[4],r[5],r[6],r[7]); return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]&&d.getHours()==r[5]&&d.getMinutes()==r[6]&&d.getSeconds()==r[7]); } alert("2002-1-31 12:34:56".isTime()); alert("2001-2-29 12:54:56".isTime()); alert("2002-1-41 12:00:00".isTime()); </script>
JavaScript判断两种格式的输入日期的正确性的代码
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