摘要： script language=javascriptString.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());aler 阅读全文