jquery Production Mall Shopping cart auto Calculate amount Form

Very practical jquery Production Mall shopping cart automatically calculate the amount of form code, you can calculate a number of items of the total price.

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 (the function () {var valstring = $ (this). Val () 0;
                     
    Prodsubtotal + + parseint (valstring);
         
    });
$ ("#product-subtotal"). Val (prodsubtotal);
};
    function Calctotalpallets () {var totalpallets = 0;
     
        $ (". Num-pallets-input"). each (the 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-pall
         
        ET span "). text (); if ((IsNumeric (numpallets)) &&amP (Numpallets!= '))
             
            {var rowtotal = numpallets * multiplier; $this. CSS ("Background-color", "White"). Parent (). Parent (). Find ("Td.row-t                    
             
        Otal input "). Val (rowtotal); 
                         
        else {$this. css ("Background-color", "#ffdcdc");
         
        };
        Calcprodsubtotal ();
        Calctotalpallets ();
        Calcshippingtotal ();
     
    Calcordertotal ();
}); });