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年月日三级联动（纯JS）

来源：互联网发布：mysql minpoolsize 编辑：程序博客网时间：2024/04/26 00:38

<script type="text/javascript" src="jquery-1.8.3.js"></script>

<script type="text/javascript">

   var currentDate = new Date();

   var currentYear;

   var currentMonth;

   $(function(){

       renderYearSelect();

       renderMonthSelect();

       renderDaySelect(currentMonth);
   })

   // 生成【年份】下拉框的内容
   function renderYearSelect(){

       currentYear = currentDate.getFullYear();

       for(var i = currentYear - 50; i < currentYear + 10; i++){
           $("#yearSelect").append("<option>"+i+"</option>");
       }

       $("#yearSelect option[value="+currentYear+"]").attr("selected", "selected");
   }

   function renderMonthSelect(){

       currentMonth = currentDate.getMonth() + 1;

       for(var i = 1; i <= 12; i++){
           $("#monthSelect").append("<option value="+i+">"+i+"</option>");
       }

       $("#monthSelect option[value="+currentMonth+"]").attr("selected", "selected");

   }

   // 生成【日】下拉框的内容
   function renderDaySelect(month){

       $("#daySelect").empty();

       var currentDays = computeDays(month);

       for(var i = 1; i <= currentDays; i++){
           $("#daySelect").append("<option>"+i+"</option>");
       }

   }

   function computeDays(month){

       if(month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12){
           return 31;
       }
       else if(month == 4 || month == 6 || month == 9 || month == 11){
           return 30;
       }
       else{
           if( isLeapYear(currentYear)){
               return 29;
           }
           else{
               return 28;
           }
       }
   }

   function isLeapYear(year){

       if(year % 400 == 0){
           return true;
       }
       else if (year % 4 == 0 && year % 100 != 0)
       {
           return true;
       }
       else{
           return false;
       }
   }

   function changeMonth(){

       currentMonth = $("#monthSelect").val();

       renderDaySelect(currentMonth);
   }

   function changeYear(){

       currentYear = $("#yearSelect").val();

       changeMonth();
   }

</script>

<body>

<select id="yearSelect" style="width:100px;" onchange="changeYear()">
</select>

<select id="monthSelect" onchange="changeMonth()">
</select>

<select id="daySelect">
</select>

</body>

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mysql minpoolsize

mysql minpoolsize

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