js 获取某个月份的天数(未测试)

[JavaScript]代码    

function getDay(){var year=$("#year").val();var month=$("#month").val();if(year==""||month==""){return;}  var  max = new Date(year,month,0).getDate();   //获取天数：var con="<option value=''>-日-</option>"; for(var i=1;i<=max;i++){  con=con+"<option value='"+i+"'>"+i+"</option>";   }$("#day").html(con);}