JavaScriptはフィボナッチの数列(ウサギの繁殖問題)を実現します.

2016年の最初の勤務日は、JavaScriptでフィボナッチの数列を実現しました.この数列は規則を理解すればよく実現できます.

HTML    ：
1 <input type="text" value="" id="num">
2 <button onclick="test()">  button>
3 <div id="txt">div>

JavaScript    ：
 1 
<span style="color:#008080;"> 2</span> <span style="color:#0000ff;">function</span><span style="color:#000000;"> test(){
</span><span style="color:#008080;"> 3</span>     <span style="color:#0000ff;">var</span> obj = $("#num").val();<span style="color:#008000;">//</span><span style="color:#008000;">                 </span>
<span style="color:#008080;"> 4</span>     <span style="color:#0000ff;">function</span><span style="color:#000000;"> rabbit(obj){
</span><span style="color:#008080;"> 5</span>         <span style="color:#0000ff;">var</span> a = 1<span style="color:#000000;">;            
</span><span style="color:#008080;"> 6</span>         <span style="color:#0000ff;">var</span> b = 1<span style="color:#000000;">;            
</span><span style="color:#008080;"> 7</span>         <span style="color:#0000ff;">var</span> str = "";         <span style="color:#008000;">//</span><span style="color:#008000;">         </span>
<span style="color:#008080;"> 8</span>         <span style="color:#0000ff;">if</span>(obj<=1){           <span style="color:#008000;">//</span><span style="color:#008000;">        1,</span>
<span style="color:#008080;"> 9</span>             str = " 1       1"+"<br/>"<span style="color:#000000;">;
</span><span style="color:#008080;">10</span>             $("#txt").html(str);  <span style="color:#008000;">//</span><span style="color:#008000;">         1</span>
<span style="color:#008080;">11</span>         }<span style="color:#0000ff;">else</span> <span style="color:#0000ff;">if</span>(obj<=2){    <span style="color:#008000;">//</span><span style="color:#008000;">           2</span>
<span style="color:#008080;">12</span>             str = " 1       1"+"<br/>"+" 2       1"+"<br/>"<span style="color:#000000;">;
</span><span style="color:#008080;">13</span>             $("#txt").html(str);  <span style="color:#008000;">//</span><span style="color:#008000;">id txt div   str     ；</span>
<span style="color:#008080;">14</span> <span style="color:#000000;">        }
</span><span style="color:#008080;">15</span>         <span style="color:#0000ff;">else</span>{                <span style="color:#008000;">//</span><span style="color:#008000;">          3   </span>
<span style="color:#008080;">16</span>             str = " 1       1"+"<br/>"+" 2       1"+"<br/>";<span style="color:#008000;">//</span><span style="color:#008000;">               </span>
<span style="color:#008080;">17</span>             $("#txt"<span style="color:#000000;">).html(str);
</span><span style="color:#008080;">18</span>                 <span style="color:#0000ff;">for</span> (i=3;i<=obj;i++){  <span style="color:#008000;">//</span><span style="color:#008000;">for  </span>
<span style="color:#008080;">19</span>                 sum = a + b;           <span style="color:#008000;">//</span><span style="color:#008000;">                    </span>
<span style="color:#008080;">20</span>                 a = b;                 <span style="color:#008000;">//</span><span style="color:#008000;">   b    a</span>
<span style="color:#008080;">21</span>                 b = sum;               <span style="color:#008000;">//</span><span style="color:#008000;">      sum   b</span>
<span style="color:#008080;">22</span>                 str = " "+(i)+"       "+sum+"<br/>"<span style="color:#000000;">;
</span><span style="color:#008080;">23</span>                 $("#txt").append(str); <span style="color:#008000;">//</span><span style="color:#008000;">          id txt div  。</span>
<span style="color:#008080;">24</span> <span style="color:#000000;">            }
</span><span style="color:#008080;">25</span> <span style="color:#000000;">        }
</span><span style="color:#008080;">26</span> <span style="color:#000000;">    }
</span><span style="color:#008080;">27</span>     rabbit(obj);                       <span style="color:#008000;">//</span><span style="color:#008000;">           （   input  ）</span>
<span style="color:#008080;">28</span> <span style="color:#000000;">}
</span><span style="color:#008080;">29</span> 

 
転載先:https://www.cnblogs.com/lxgandlz/p/5098714.html