生日代码需要ajax

Question

我有下一个代码，我需要在当天“选择”。

EX：今天是18/04/2014这样：

day=18 
month=04 
year=14 

如有不明白：

<select name="day" id="day"> 
<option value="na">day</option> 
<option value="01">1</option> 
<option value="02">2</option> 
<option value="03">3</option> 
<option value="04">4</option> 
<option value="05">5</option> 
<option value="06">6</option> 
<option value="07">7</option> 
<option value="08" selected>8</option> 
<option value="09">9</option> 
<option value="10">10</option> 
<option value="11">11</option> 
</select> 

和年月....

它的完整代码：

<select name="day" id="day"> 
<option value="na">day</option> 
<option value="01">1</option> 
<option value="02">2</option> 
<option value="03">3</option> 
<option value="04">4</option> 
<option value="05">5</option> 
<option value="06">6</option> 
<option value="07">7</option> 
<option value="08">8</option> 
<option value="09">9</option> 
<option value="10">10</option> 
<option value="11">11</option> 
<option value="12">12</option> 
<option value="13">13</option> 
<option value="14">14</option> 
<option value="15">15</option> 
<option value="16">16</option> 
<option value="17">17</option> 
<option value="18">18</option> 
<option value="19">19</option> 
<option value="20">20</option> 
<option value="21">21</option> 
<option value="22">22</option> 
<option value="23">23</option> 
<option value="24">24</option> 
<option value="25">25</option> 
<option value="26">26</option> 
<option value="27">27</option> 
<option value="28">28</option> 
<option value="29">29</option> 
<option value="30">30</option> 
<option value="31">31</option> 
</select>/ 
<select name="month" id="month"> 
<option value="na">month</option> 
<option value="01">January</option> 
<option value="02">February</option> 
<option value="03">March</option> 
<option value="04">April</option> 
<option value="05">May</option> 
<option value="06">June</option> 
<option value="07">July</option> 
<option value="08">August</option> 
<option value="09">September</option> 
<option value="10">October</option> 
<option value="11">November</option> 
<option value="12">December</option> 
</select>/ 
<select name="year" id="year"> 
<option value="na">year</option> 
<option value="14">2014</option> 
</select> 

其简单，但我需要帮助...

如果你可以我更愿意ajax更多。

Answer 1

AJAX与此有什么关系？

document.getElementById('day').selectedIndex = day; 
document.getElementById('month').selectedIndex = month; 
document.getElementById('year').selectedIndex = year-2013; 
// "year-2013" will need adjusting if you have more than just the current year 
// if they are in increasing order, replace 2013 with "lowest year -1" 
// otherwise, do "highest year +1" - year