1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta http-equiv="Content-Type" content="textml; charset=utf-8"> 5 <meta name="viewport" content="width=device-width"> 6 <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no"> 7 <title>jQuery实现购物车多物品数量的加减+总价计算</title> 8 <script type="text/javascript" src="http://code.jquery.com/jquery-1.6.1.min.js"></script> 9 </head> 10 <script> 11 $(function(){ 12 $(".add").click(function(){ 13 var t=$(this).parent().find('input[class*=text_box]'); 14 t.val(parseInt(t.val())+1) 15 setTotal(); 16 }) 17 $(".min").click(function(){ 18 var t=$(this).parent().find('input[class*=text_box]'); 19 t.val(parseInt(t.val())-1) 20 if(parseInt(t.val())<0){ 21 t.val(0); 22 } 23 setTotal(); 24 }) 25 function setTotal(){ 26 var s=0; 27 $("#tab td").each(function(){ 28 s+=parseInt($(this).find('input[class*=text_box]').val())*parseFloat($(this).find('span[class*=price]').text()); 29 }); 30 $("#total").html(s.toFixed(2)); 31 } 32 setTotal(); 33 34 }) 35 </script> 36 <body> 37 <table id="tab"> 38 <tr> 39 <td> 40 <span>单价:</span><span class="price">1.50</span> 41 <input class="min" name="" type="button" value="-" /> 42 <input class="text_box" name="" type="text" value="1" /> 43 <input class="add" name="" type="button" value="+" /> 44 </td> 45 </tr> 46 <tr> 47 <td> 48 <span>单价:</span><span class="price">3.95</span> 49 <input class="min" name="" type="button" value="-" /> 50 <input class="text_box" name="" type="text" value="1" /> 51 <input class="add" name="" type="button" value="+" /> 52 </td> 53 </tr> 54 </table> 55 56 <p>总价：<label id="total"></label></p> 57 </body> 58 </html>