提示:文章写完后,目录可以自动生成,如何生成可参考右边的帮助文档
所需函数:
function cal():计算购物车里的价格,积分,数量等;
$(".add").click(function(){}):添加商品数量;
$(".sub").click(function(){}):减少商品数量;
$("#add").click(function(){}):添加新商品;
$(".del").click(function(){}):删除商品;
$("#control").click(function(){}):商品全选;
<script> function cal(){ //设置三个全局变量来接受总数量,总积分,总价格 var allnum = 0; var allsorce = 0; var allprice = 0; //通过类选择器拿到每一个商品数量框 $(".num").each(function(i,v){ var num = $(v).val(); var price = $(v).parent().prev().html(); var all = parseInt(num)*parseInt(price); $(v).parent().next().html(all); allnum+=parseInt(num); allprice+=parseInt(all) var jf = $(v).parent().prev().prev().html(); var alljf = parseInt(num)*parseInt(jf); allsorce+=parseInt(alljf); $("#allnum").html(allnum); $("#alljf").html(allsorce); $("#allmoney").html(allprice); }); } $(function(){ cal(); $(".add").click(function(){ var n = $(this).prev().val(); $(this).prev().val(parseInt(n)+1); cal(); }); $(".sub").click(function(){ var n = $(this).next().val(); if(n>1){ $$(this).next().val(parseInt(n)-1); cal(); }else{ var bet = confirm("要删除吗?") if(bet){ $(this).parents("tr").remove(); cal(); } } }); $("#add").click(function(){ var $newNode=$("table tr:eq(2)").clone(true); $("table tr:last").before($newNode); cal(); }); $(".del").click(function(){ var bet = confirm("要删除吗?") if(bet){ $(this).parents("tr").remove(); cal(); } }); var flag = $("#control").val(); $("#control").click(function(){ if(flag){ $("input[type='checkbox']").attr("checked","true"); flag=false; }else{ $("input[type='checkbox']").removeAttr("checked"); flag=true; } }); }); </script>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style type="text/css"> *{ margin: 0px; padding: 0px; } table{ width: 800px; margin: 0px auto; font-size: 12px; text-align: center; } td{ padding: 10px; background-color: #E2F2FF; } .td_2 div{ float: left; } .td_2 div:last-of-type{ width: 260px; margin-left:5px; } .td_2 p{ line-height: 20px; text-align: left; } .num{ border: 1px solid powderblue; width: 20px; height: 20px; text-align: center; } .sub,.add{ width: 20px; height: 20px; } </style> </head> <body> <input type="button" οnclick="cal();" value="aa"/> <table> <tr> <td><input type="checkbox" id="control"/>全选</td> <td>店铺宝贝</td><td>获积分</td><td>单价(元)</td> <td>数量</td><td>小计(元)</td><td>操作 <input type="button" id="add" value="添加"/></td> </tr> <tr id="pro1"> <td class="td_1"><input type="checkbox" /></td> <td class="td_2"> <div><img src="images/taobao_cart_01.jpg"></div> <div> <p><a href="#">日韩流行风时尚美眉最爱独特米字拼图金属坡跟公主靴子黑色</a></p> <p>颜色:棕色 尺码:37</p> <p>保障:<img src="images/taobao_icon_01.jpg"> </p> </div> </td> <td class="td_3">5</td> <td class="td_4">138</td> <td class="td_5"> <input type="button" value="-" class="sub"/> <input type="text" value="1" class="num" /> <input type="button" value="+" class="add"/> </td> <td class="td_6"> </td> <td class="td_7"> <a href="#" class="del">删除</a> </td> </tr> <tr id="pro2"> <td class="td_1"><input type="checkbox" /></td> <td class="td_2"> <div><img src="images/taobao_cart_02.jpg"></div> <div> <p><a href="#">chanel/香奈尔/香奈尔炫亮魅力唇膏3.5g</a></p> <p>保障:<img src="images/taobao_icon_01.jpg"> </p> </div> </td> <td class="td_3">12</td> <td class="td_4">265</td> <td class="td_5"> <input type="button" value="-" class="sub"/> <input type="text" value="1" class="num" /> <input type="button" value="+" class="add"/> </td> <td class="td_6"> </td> <td class="td_7"> <a href="#" class="del">删除</a> </td> </tr> <tr id="pro3"> <td class="td_1"><input type="checkbox" /></td> <td class="td_2"> <div><img src="images/taobao_cart_03.jpg"></div> <div> <p><a href="#">蝶妆海?蓝清滢粉底液10#(象牙白)</a></p> <p>保障:<img src="images/taobao_icon_01.jpg"> <img src="images/taobao_icon_02.jpg"></p> </div> </td> <td class="td_3">3</td> <td class="td_4">85</td> <td class="td_5"> <input type="button" value="-" class="sub"/> <input type="text" value="2" class="num" /> <input type="button" value="+" class="add"/> </td> <td class="td_6"> </td> <td class="td_7"> <a href="#" class="del">删除</a> </td> </tr> <tr id="pro4"> <td class="td_1"><input type="checkbox" /></td> <td class="td_2"> <div><img src="images/taobao_cart_04.jpg"></div> <div> <p><a href="#">相宜促销专供 大S推荐 最好用的LilyBell化妆棉</a></p> <p>保障:<img src="images/taobao_icon_01.jpg"> <img src="images/taobao_icon_02.jpg"></p> </div> </td> <td class="td_3">12</td> <td class="td_4">12</td> <td class="td_5"> <input type="button" value="-" class="sub"/> <input type="text" value="5" class="num" /> <input type="button" value="+" class="add"/> </td> <td class="td_6"> </td> <td class="td_7"> <a href="#" class="del">删除</a> </td> </tr> <tr id="all"> <td colspan="7"> 总数量:<span id="allnum"></span> 总积分:<span id="alljf"></span> 总金额:<span id="allmoney"></span> </td> </tr> </table> </body> </html>
效果图: