Melaksanakan pemilihan pautan tarikh hari lahir berdasarkan kemahiran bootstrap_javascript javascript

<div class="col-sm-9">
                    <label class="checkbox-inline">
                      <select node-type="birthday_year" name="birthday_y" id="birthday_y">
                        <option value=""></option>
 
                      </select><span>年</span>
                    </label>
                    <label class="checkbox-inline">
                      <select node-type="birthday_month" name="birthday_m" id="birthday_m">
                        <option value=""></option>
 
                      </select><span>月</span>
                    </label>
                    <label class="checkbox-inline">
                      <select node-type="birthday_month" name="birthday_d" id="birthday_d">
                        <option value=""></option>
 
                      </select><span>日</span>
                    </label>
                    <input type="hidden" name="birth" id="birth" value="2016/2/12">
                    <label class='checkbox-inline text-warning hidden' id="birth_error_info"><i class='fa fa-warning'>请输入完整生日</i></label>
                  </div>

//设置生日的转换和获取
 
 
  var date=new Date();
  var year=date.getFullYear();
  for(var i=year;i>=1900;i--){
    $("#birthday_y").append("<option value="+i+" label="+i+">"+i+"</option>");
  }
 
 
 
 
  $('#birthday_y').change(function(){
    var birth_year=$('#birthday_y').val();
    if(birth_year!=""){
      var birth_month=$('#birthday_m').val();
      if(birth_month!=""){
        if(birth_month=="2"){
          if((birth_year%4==0 && birth_year%100!=0) || (birth_year%400==0)){
            $("#birthday_d").append("<option value=" + 29 + " label=" + 29 + ">" + 29 + "</option>");
          }else{
            $("#birthday_d option[value='29']").remove();
          }
        }
      }else {
        for (var i = 1; i <= 12; i++) {
          $("#birthday_m").append("<option value=" + i + " label=" + i + ">" + i + "</option>");
        }
      }
    }else{
      $("#birthday_m").html("<option value=''></option>");
      $("#birthday_d").html("<option value=''></option>");
    }
    checkBirthday();
  });
  $('#birthday_m').change(function(){
    var birth_year=$('#birthday_y').val();
    var birth_month=this.value;
    var birth_day=$('#birthday_d').val();
    if(birth_month!=""){
      switch (birth_month){
        case "1":case "3":case "5":case "7":case "8":case "10":case "12":
        if(birth_day=="") {
          $("#birthday_d").empty();
          $("#birthday_d").append("<option value='' ></option>");
          for (var i = 1; i <= 31; i++) {
            $("#birthday_d").append("<option value=" + i + " label=" + i + ">" + i + "</option>");
          }
        }else {
          switch ($("#birthday_d option:last").attr("value")){
            case "28":$("#birthday_d").append("<option value=" + 29 + " >" + 29 + "</option>");
            case "29":$("#birthday_d").append("<option value=" + 30 + " >" + 30 + "</option>");
              $("#birthday_d").append("<option value=" + 31 + " >" + 31 + "</option>");break;
            case "30":$("#birthday_d").append("<option value=" + 31 + " >" + 31 + "</option>");
              break;
            default :break;
 
          }
        }
        break;
        case "4":case "6":case "9": case "11":
        if(birth_day=="") {
          $("#birthday_d").empty();
          $("#birthday_d").append("<option value='' ></option>");
          for (var i = 1; i <= 30; i++) {
            $("#birthday_d").append("<option value=" + i + " label=" + i + ">" + i + "</option>");
          }
        }else{
          switch ($("#birthday_d option:last").attr("value")){
            case "28":$("#birthday_d").append("<option value=" + 29 + " >" + 29 + "</option>");
            case "29":$("#birthday_d").append("<option value=" + 30 + " >" + 30 + "</option>");
            case "31":$("#birthday_d option[value='31']").remove();
              break;
            default :break;
 
          }
        }
        break;
        case "2":
          if(birth_day==""){
            if((birth_year%4==0 && birth_year%100!=0) || (birth_year%400==0)){
              for(var i=1;i<=29;i++){
                $("#birthday_d").append("<option value="+i+" label="+i+">"+i+"</option>");
              }
            }else{
              for(var i=1;i<=28;i++){
                $("#birthday_d").append("<option value="+i+" label="+i+">"+i+"</option>");
              }
            }}else{
            $("#birthday_d option[value='31']").remove();
            $("#birthday_d option[value='30']").remove();
            if((birth_year%4==0 && birth_year%100!=0) || (birth_year%400==0)){
 
            }else{
              $("#birthday_d option[value='29']").remove();
            }
          }
          break;
        default :break;
      }
 
 
    }
    checkBirthday();
  });
 
  $('#birthday_d').change(function() {
      checkBirthday();
    }
  );
  $('#birthday_d').focus(
    function(){
      if($('#birthday_m').val()==""){
        $("#birthday_d").empty();
        $("#birthday_d").append("<option value='' ></option>");
      }
    }
  );
 
  //根据后台提供的数据，填充用户的值
  var birth_value=$('#birth').val();
  if(birth_value!="") {
    var date1 = new Date(birth_value);
    var b_year=date1.getFullYear();
    var b_month=date1.getMonth()+1;
    var b_day=date1.getDate();
    $("#birthday_y").find("option[value='"+b_year+"']").attr("selected","selected");
    if($('#birthday_y').val()!="") {
      for (var i = 1; i <= 12; i++) {
        $("#birthday_m").append("<option value=" + i + " label=" + i + ">" + i + "</option>");
      }
    }
    $("#birthday_m").find("option[value='"+b_month+"']").attr("selected","selected");
    switch (b_month){
      case 1:case 3:case 5:case 7:case 8:case 10:case 12:
      for (var i = 1; i <= 31; i++) {
        $("#birthday_d").append("<option value=" + i + " label=" + i + ">" + i + "</option>");
      }
      break;
      case 4:case 6:case 9: case 11:
 
      $("#birthday_d").append("<option value='' ></option>");
      for (var i = 1; i <= 30; i++) {
        $("#birthday_d").append("<option value=" + i + " label=" + i + ">" + i + "</option>");
      }
      break;
      case 2:
        if((b_year%4==0 && b_year%100!=0) || (b_year%400==0)){
          for(var i=1;i<=29;i++){
            $("#birthday_d").append("<option value="+i+" label="+i+">"+i+"</option>");
          }
        }else{
          for(var i=1;i<=28;i++){
            $("#birthday_d").append("<option value="+i+" label="+i+">"+i+"</option>");
          }
        }
        break;
      default :break;
    }
    $("#birthday_d").find("option[value='"+b_day+"']").attr("selected","selected");
  }
 
//验证生日是否输入完整
  function checkBirthday(){
    var b_year= $('#birthday_y').val();
    var b_month=$('#birthday_m').val();
    var b_day=$('#birthday_d').val();
    if(b_year!=""&&b_month!=""&&b_day!=""){
      $('#birth').val(b_year+"-"+b_month+"-"+b_day);
      $('#birth_error_info').addClass("hidden");
    }else{
      $('#birth').val("");
      $('#birth_error_info').removeClass("hidden");
    }
  }