JS时间正则表达式样例

  if (document.getElementById("txtVisitDate").value.length <= 0) {
            AlertMessageNew("访视时间必填！", null, "3", null);
            return false;
        }
        var begin = document.getElementById("txtFenmianrq").value;
        var end = document.getElementById("txtVisitDate").value;
        
        if (parseFloat(begin) > parseFloat(end)) {
            //alert("起始时间不能大于结束时间");
            AlertMessage('产后访视时间必须在孕妇分娩日期之后!', null, '3', null);
            return false;
        }
    

      
        var txtVisitDateStr = document.getElementById("txtVisitDate").value;
        var r = /"^[0-9]{4}[-]{1}{0-9}[2][-]{1}[0-9]{2}$"/;
       
        

        if (!r.test(txtVisitDateStr)) {
            AlertMessageNew("访视时间格式错误", null, "3", null);
            return false;
        }