JavaScript获取某年某月的最后一天

2015/02/01 35520
    <!DOCTYPE html>  
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    <html>  
        <head>  
            <title>JavaScript获取某年某月的最后一天</title>  
            <meta charset="UTF-8">  
            <meta name="viewport" content="width=device-width">  
            <script type="text/javascript">  
                  /**  
                   * 获取某年某月的最后一天  
                   */  
                  function getLastDayOfMonth(year,month)  
                  {  
                      //获取本年本月的第一天日期  
                      var date = new Date(year,month-1,'01');  
                      //设置日期  
                      date.setDate(1);  
                      //设置月份  
                      date.setMonth(date.getMonth() + 1);  
                      //获取本月的最后一天  
                      cdate = new Date(date.getTime() - 1000*60*60*24);  
                      //打印某年某月的最后一天  
                      alert(cdate.getFullYear()+"年"+(Number(cdate.getMonth())+1)+"月最后一天的日期:"+cdate.getDate()+"日");   
                      //返回结果  
                      return cdate.getDate();  
                  }  
            </script>  
        </head>  
        <body>  
            <input type="button" value="获取某年某月的最后一天" onclick="getLastDayOfMonth(2014,6)"/>  
        </body>  
    </html>
代码片段
