非常实用的一款jquery制作商城购物车自动计算金额表单代码，可以计算多项物品总价。
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(); }); });
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