我想添加下拉样式日期选择器,根据所选年份和月份重新填充日期列表,例如。 2008年2月有29天,4月有30天,6月有31天等...我怎么能用javascript做到这一点?
答案 0 :(得分:3)
答案 1 :(得分:1)
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答案 2 :(得分:1)
<强> HTML 强>
<select name="" id="year">
<option value="2016">2016</option>
<option value="2015">2015</option>
<option value="2014">2014</option>
<option value="2013">2013</option>
<option value="2012">2012</option>
</select>
<select name="" id="month">
<option value="0">January</option>
<option value="1">February</option>
<option value="2">March</option>
<option value="3">April</option>
<option value="4">May</option>
<option value="5">June</option>
<option value="6">July</option>
<option value="7">August</option>
<option value="8">September</option>
<option value="9">October</option>
<option value="10">Novenmer</option>
<option value="11">December</option>
</select>
<select name="" id="day">
</select>
<强> SCRIPT 强>
<script>
$(document).ready(function(){
dpick('#year','#month','#day',1);
});
function dpick(year,month,day,td){
if(td==1){
var today = new Date();
$(year).val(today.getFullYear());
$(month).val(today.getMonth());
}
$(year).change(function(){
dpick(year,month,day);
});
$(month).change(function(){
dpick(year,month,day);
});
var month_val = $(month).val();
var i=0;
$(day).empty();
if(month_val=="1"){
if($(year).val()%4 == 0){
for(i=1;i<=29;i++){
$(day).append($("<option></option>").attr("value", i).text(i));
}
}else{
for(i=1;i<=28;i++){
$(day).append($("<option></option>").attr("value", i).text(i));
}
}
}
else if(month_val=="8" || month_val=="3" || month_val=="5" || month_val=="10"){
for(i=1;i<=30;i++){
$(day).append($("<option></option>").attr("value", i).text(i));
}
}
else{
for(i=1;i<=31;i++){
$(day).append($("<option></option>").attr("value", i).text(i));
}
}
if(td==1){
$(day).val(today.getDate());
}
}
</script>