JavaScript判断两种格式的输入日期的正确性的代码

JavaScript判断两种格式的输入日期的正确性的代码_javascript技巧

WBOY

Libérer： 2016-05-16 19:16:01

original

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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

复制代码代码如下:

<script>     <BR>String.prototype.isDate = function()     <BR>{     <BR>   var r = this.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/);      <BR>   if(r==null)return false; var d = new Date(r[1], r[3]-1, r[4]);      <BR>   return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]);     <BR>}     <BR>alert("2002-01-31".isDate());     <BR>alert("2002-01-41".isDate());     <BR></script>    
<script>  <BR>String.prototype.isDate = function()  <BR>{  <BR>   var r = this.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/);   <BR>   if(r==null)return false; var d = new Date(r[1], r[3]-1, r[4]);   <BR>   return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]);  <BR>}  <BR>alert("2002-01-31".isDate());  <BR>alert("2002-01-41".isDate());  <BR></script> 

第三种,比较复杂的

复制代码代码如下:

<script>     <BR>String.prototype.isTime = function()     <BR>{     <BR>  var r = this.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2}) (\d{1,2}):(\d{1,2}):(\d{1,2})$/);      <BR>  if(r==null)return false; var d = new Date(r[1], r[3]-1,r[4],r[5],r[6],r[7]);      <BR>  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]);     <BR>}     <BR>alert("2002-1-31 12:34:56".isTime());     <BR>alert("2001-2-29 12:54:56".isTime());     <BR>alert("2002-1-41 12:00:00".isTime());     <BR></script>   