年月日的三级联动
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<input type= "text" id= "hs" > <input type= "button" id= "btn" value= "提交" >
<span id= "rent" ></span>
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这个年月日的三级联动 主要是用的select标签
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var str = "<select id='year'></select> <select id='month'>" +
"</select> <select id='day'></select>" ;
$( "#rent" ).html(str);
fullyear();
fullmonth();
fullday();
//当其中一个改变,后面的要跟着改变
$( "#year" ).change( function (){
fullday();
});
$( "#month" ).change( function (){
fullday();
});
function fullyear()
{
var d = new Date ();
var year = d.getFullYear();
str = "" ;
for ( var i=year-5;i<year+6;i++)
{
if (i==year)
{
str += "<option selected='selected' value='" +i+ "'>" +i+ "</option>" ;
}
else {
str += "<option value='" +i+ "'>" +i+ "</option>"
}
}
$( "#year" ).html(str);
}
function fullmonth()
{
var d = new Date ();
var month = d.getMonth()+1;
str = "" ;
for ( var j=1;j<13;j++)
{
if (j==month)
{
str += "<option selected='selected' value='" +j+ "'>" +j+ "</option>" ;
}
else {
str += "<option value='" +j+ "'>" +j+ "</option>"
}
}
$( "#month" ).html(str);
}
function fullday()
{
var d = new Date ();
var day = d. getDate ();
var year=$( "#year" ).val();
var month=$( "#month" ).val();
var rq=31;
str = "" ;
if (month==4|| month==6|| month==9|| month===11)
{
rq=30;
}
else if (month==2)
{
if (year%4==0 && year%100!=0 || year%400==0)
{
rq=29; //闰年
}
else {
rq=28; //不是闰年
}
}
for ( var n=1;n<rq+1;n++)
{
if (n==day)
{
str += "<option selected='selected' value='" +n+ "'>" +n+ "</option>" ;
}
else
{
str += "<option value='" +n+ "'>" +n+ "</option>" ;
}
}
$( "#day" ).html(str);
} //到这里就完成了下拉列表的内容了,下一步要做的是把内容存到表单中
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$( "#btn" ).click(function(){
var nian=$( "#year" ).val();
var yue=$( "#month" ).val();
var ri=$( "#day" ).val();
var time=nian+ "-" +yue+ "-" +ri+ "" ;
$( "#hs" ).val(time)
})
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