<!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> <meta charset="utf-8" /> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"> <title>JQuery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]'); if(t.val()==""||undefined||null){ t.val(0); } t.val(parseInt(t.val()) + 1) setTotal(); }) $(".min").click(function() { var t = $(this).parent().find('input[class*=text_box]'); if(t.val()==""||undefined||null){ t.val(0); } t.val(parseInt(t.val()) - 1) if(parseInt(t.val()) < 0) { t.val(0); } setTotal(); }) $(".text_box").keyup(function(){ var t = $(this).parent().find('input[class*=text_box]'); if(parseInt(t.val())==""||undefined||null || isNaN(t.val())) { t.val(0); } setTotal(); }) function setTotal() { var s = 0; $("#tab td").each(function() { var t = $(this).find('input[class*=text_box]').val(); var p = $(this).find('span[class*=price]').text(); if(parseInt(t)==""||undefined||null || isNaN(t) || isNaN(parseInt(t))){ t=0; } s += parseInt(t) * parseFloat(p); }); $("#total").html(s.toFixed(2)); } setTotal(); }) </script> <style type="text/css"> input[type=number] { -moz-appearance:textfield; } input[type=number]::-webkit-inner-spin-button, input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; } </style> </head> <body> <table id="tab"> <tr> <td> <span>单价:</span><span class="price">50.00</span> <input class="min" name="" type="button" value="-" /> <input class="text_box" name="" type="number" value="" placeholder="0"/> <input class="add" name="" type="button" value="+" /> </td> </tr> <tr> <td> <span>单价:</span><span class="price">25.50</span> <input class="min" name="" type="button" value="-" /> <input class="text_box" name="" type="number" value="" placeholder="0"/> <input class="add" name="" type="button" value="+" /> </td> </tr> </table> <p>总价：<label id="total"></label></p> </body> </html>
效果预览
