| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> | |
| <html xmlns="http://www.w3.org/1999/xhtml"> | |
| <head> | |
| <title>jQuery实现购物车多物品数量的加减+总价计算</title> | |
| <script type="text/javascript" src="http://code.jquery.com/jquery-1.6.1.min.js"></script> | |
| <script> | |
| $(function(){ | |
| $(".add").click(function(){ | |
| var t=$(this).parent().find(‘input[class*=text_box]‘); | |
| t.val(parseInt(t.val())+1) | |
| setTotal(); | |
| }) | |
| $(".min").click(function(){ | |
| var t=$(this).parent().find(‘input[class*=text_box]‘); | |
| t.val(parseInt(t.val())-1) | |
| if(parseInt(t.val())<0){ | |
| t.val(0); | |
| } | |
| setTotal(); | |
| }) | |
| function setTotal(){ | |
| var s=0; | |
| $("#tab td").each(function(){ | |
| s+=parseInt($(this).find(‘input[class*=text_box]‘).val())*parseFloat($(this).find(‘span[class*=price]‘).text()); | |
| }); | |
| $("#total").html(s.toFixed(2)); | |
| } | |
| setTotal(); | |
| }) | |
| </script> | |
| </head> | |
| <body> | |
| <table id="tab"> | |
| <tr> | |
| <td> | |
| <span>单价:</span><span class="price">1.50</span> | |
| <input class="min" name="" type="button" value="-" /> | |
| <input class="text_box" name="" type="text" value="1" /> | |
| <input class="add" name="" type="button" value="+" /> | |
| </td> | |
| </tr> | |
| <tr> | |
| <td> | |
| <span>单价:</span><span class="price">3.95</span> | |
| <input class="min" name="" type="button" value="-" /> | |
| <input class="text_box" name="" type="text" value="1" /> | |
| <input class="add" name="" type="button" value="+" /> | |
| </td> | |
| </tr> | |
| </table> | |
| <p>总价：<label id="total"></label></p> | |
| </body> | |
| </html> |
原文：http://www.cnblogs.com/xueyu-1/p/5640884.html