关于php和javascript subtotal问题 - JBTALKS.CC

想问各位如果我要加subtotal和total进去我的webpage里面，就好象tgv或gsc的cinema网上订票一样，
在dropbox那边我选什么quantity，subtotal和total都会在同一个webpage里面Update和显示出来，是应该怎样写code呢？

以下我用alert的觉得很奇怪，谁可以指导我呢？先说声谢谢

<form id="form1" name="form1" method="post" action="getcashprocess.php">

                              <table cellSpacing="0" cellPadding="0" width="500" border="0">

            <td width="154" align="center">Ticket Type</td>

            <td width="67" align="center">Qty</td>

            <td width="86" align="center">Cost(RM)</td>

            <td width="100" align="center">Subtotal(RM)</td>

            <tr>



         <td width="154" align="center" ><p>1.Children</p> <p>2.Adult(Above age 18)</p>

            <p>3.Twin Seat</p></td>

            <td width="67" align="center"><p>nbsp;</p>

            <p>

               <label>

                  <select name="qty" id="qty" tableindex="1"

onchange="showOption(this.options[this.options.selectedIndex].value)">

            <option value="0">0</option>

            <option value="1">1</option>

            <option value="2">2</option>

            <option value="3">3</option>

            <option value="4">4</option>

            <option value="5">5</option>

            <option value="6">6</option>

            <option value="7">7</option>

            <option value="8">8</option>

            <option value="9">9</option>

            <option value="10">10</option>

            </select>

               </label>

            </p>

            <p>

               <label>

            <select name="qty2" id="qty2" tableindex="1"

onchange="showOption1(this.options[this.options.selectedIndex].value)">

            <option value="0">0</option>

            <option value="1">1</option>

            <option value="2">2</option>

            <option value="3">3</option>

            <option value="4">4</option>

            <option value="5">5</option>

            <option value="6">6</option>

            <option value="7">7</option>

            <option value="8">8</option>

            <option value="9">9</option>

            <option value="10">10</option>

            </select>

            </label>

            </p>

            <p>

            <select name="qty3" id="qty3" tableindex="1"

onchange="showOption2(this.options[this.options.selectedIndex].value)">

               <option>0</option>

               <option>1</option>

               <option>2</option>

               <option>3</option>

               <option>4</option>

               <option>5</option>

               <option>6</option>

               <option>7</option>

               <option>8</option>

               <option>9</option>

               <option>10</option>

            </select>

            </p>

            <p>nbsp;</p>



            <td width="86" align="center"><p>6.00</p>

            <p> 10.00             </p>

            <p>12.00</p></td>

            <td width="100" align="center">



            <p>nbsp;

                        <script type="text/javascript">

                              function showOption(option) {

                              alert("Subtotal(Children) = RM"+(option*6.00));

                              }



                              function showOption1(option) {

                              alert("Subtotal(Adult) = RM"+(option*10.00));

                              }

                              function showOption2(option) {

                              alert("Subtotal(TwinSeat) = RM"+(option*12.00));

                              }

                              </script></p></td>

         <td width="2"></td>



         </tr>

         <br />

         <tr>

                  <td width="91" align="center"></td>

            <td width="154" align="center"></td>

            <td width="86" align="center">



            Total(RM):

            </td>

         </tr>

         <td>Payment type:

         <label>

                  <select name="paymenttype" id="paymenttype" tableindex="1">

                  <option>Credit Card</option>

                  <option>Paypal</option>

                  </select>

               </label>

         </td>

         <tr><td>

               <label>

               <input type="submit" name="Submit" value="Submit" />



                  </label>

               </td>

               </tr>

               </table>

</form>

复制代码

kuang 发表于 2011-5-3 06:34 PM