本文實例講述了jQuery實現購物車表單自動結算效果。分享給大家供大家參考。具體如下：
這里jQuery實現購物車表單自動結算，只要用戶把所購商品的數量輸入進去，就可以適時計算出商品總額，金額+運費，類似淘寶的購物車結算功能，計算過程是適時的，用jquery實現了Ajax不刷新網頁就計算的功能，做購物類網站的或許可以用上這個例子。
運行效果截圖如下：
具體代碼如下：
<!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購物車表單自動結算</title><style>*{margin:0;padding:0;}body{font:12px "Lucida Grande", Helvetica, Sans-Serif;padding:50px;}table{border-collapse:collapse;}#order-table{width:100%;}#order-table td{padding:5px;}#order-table th{padding:5px;background:black;color:white;text-align:left;}#order-table td.row-total{text-align:right;}#order-table td input{width:75px;text-align:center;}#order-table tr.even td{background:#eee;}#order-table td .total-box,.total-box{border:3px solid green;width:70px;padding:3px;margin:5px 0 5px 0;text-align:center;font-size:14px;}#shipping-subtotal{margin:0;}#shipping-table{width:350px;float:right;}#shipping-table td{padding:5px;}#shipping-table th{padding:5px;background:black;color:white;text-align:left;}#shipping-table td input{width:69px;text-align:center;}#order-total{font-weight:bold;font-size:21px;width:110px;}</style><script type="text/javascript" src="jquery-1.6.2.min.js"></script><script type="text/javascript">function IsNumeric(sText){ var ValidChars = "0123456789."; var IsNumber=true; var Char; for (i = 0; i < sText.length && IsNumber == true; i++) { Char = sText.charAt(i); if (ValidChars.indexOf(Char) == -1) { IsNumber = false; } } return IsNumber;};function calcProdSubTotal() { var prodSubTotal = 0; $(".row-total-input").each(function(){ var valString = $(this).val() || 0; prodSubTotal += parseInt(valString); }); $("#product-subtotal").val(prodSubTotal);};function calcTotalPallets() { var totalPallets = 0; $(".num-pallets-input").each(function() { var thisValue = $(this).val(); if ( (IsNumeric(thisValue)) && (thisValue != '') ) { totalPallets += parseInt(thisValue); }; }); $("#total-pallets-input").val(totalPallets);};function calcShippingTotal() { var totalPallets = $("#total-pallets-input").val() || 0; var shippingRate = $("#shipping-rate").text() || 0; var shippingTotal = totalPallets * shippingRate; $("#shipping-subtotal").val(shippingTotal);};function calcOrderTotal() { var orderTotal = 0; var productSubtotal = $("#product-subtotal").val() || 0; var shippingSubtotal = $("#shipping-subtotal").val() || 0; var orderTotal = parseInt(productSubtotal) + parseInt(shippingSubtotal); var orderTotalNice = "$" + orderTotal; $("#order-total").val(orderTotalNice);};$(function(){ $('.num-pallets-input').blur(function(){ var $this = $(this); var numPallets = $this.val(); var multiplier = $this .parent().parent() .find("td.price-per-pallet span") .text(); if ( (IsNumeric(numPallets)) && (numPallets != '') ) { var rowTotal = numPallets * multiplier; $this .css("background-color", "white") .parent().parent() .find("td.row-total input") .val(rowTotal); } else { $this.css("background-color", "#ffdcdc"); }; calcProdSubTotal(); calcTotalPallets(); calcShippingTotal(); calcOrderTotal(); });});</script><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /></head><body><h1>jQuery購物車自動計算表單金額</h1><table id="order-table"> <tr> <th>商品名稱</th> <th>數量</th> <th>X</th> <th>單價</th> <th>=</th> <th style="text-align: right;">總計</th> </tr> <tr class="odd"> <td class="product-title">褲子</td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="turface-pro-league-num-pallets" ></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>340</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="turface-pro-league-row-total" disabled="disabled"></input> </td> </tr> <tr class="even"> <td class="product-title">襪子</td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="turface-pro-league-red-num-pallets"></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>455</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="turface-pro-league-red-row-total" disabled="disabled"></input> </td> </tr> <tr class="odd"> <td class="product-title">嬰兒用品</td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="turface-quick-dry-num-pallets" ></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>300</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="turface-quick-dry-row-total" disabled="disabled"></input> </td> </tr> <tr class="even"> <td class="product-title">電腦用品</td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="turface-mound-clay-red-num-pallets"></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>410</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="turface-mound-clay-red-row-total" disabled="disabled"></input> </td> </tr> <tr class="odd"> <td class="product-title">汽車裝飾用品</td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="diamond-pro-red-num-pallets" ></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>365</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="diamond-pro-red-row-total" disabled="disabled"></input> </td> </tr> <tr class="even"> <td class="product-title">家居裝飾用品</em></td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="diamond-pro-drying-agent-num-pallets"></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>340</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="diamond-pro-drying-agent-row-total" disabled="disabled"></input> </td> </tr> <tr class="odd"> <td class="product-title">生活用品</td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="diamond-pro-professional-num-pallets" ></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>375</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="diamond-pro-professional-row-total" disabled="disabled"></input> </td> </tr> <tr class="even"> <td class="product-title">建材用品</td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="diamond-pro-top-dressing-num-pallets"></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>340</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="diamond-pro-top-dressing-row-total" disabled="disabled"></input> </td> </tr> <tr> <td colspan="6" style="text-align: right;">產品小計: <input type="text" class="total-box" id="product-subtotal" disabled="disabled"></input> </td> </tr></table><table id="shipping-table"> <tr> <th>總數量.</th> <th>X</th> <th>運費</th> <th>=</th> <th style="text-align: right;">總運費</th> </tr> <tr> <td id="total-pallets"> <input id="total-pallets-input" type="text" disabled="disabled"></input> </td> <td>X</td> <td id="shipping-rate">10.00</td> <td>=</td> <td style="text-align: right;"> <input type="text" class="total-box" id="shipping-subtotal" disabled="disabled"></input> </td> </tr></table><div class="clear"></div><div style="text-align:right;"> <span>訂單總額: </span> <input type="text" class="total-box" id="order-total" disabled="disabled"></input> <br /><br /> <input type="submit" value="提交結賬" class="submit" /></div></body></html>希望本文所述對大家的jquery程序設計有所幫助。
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