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我想在这个 nopcart.js 文件中放置一个 for 循环,以便我可以将订单的详细信息保存为字符串。目前它正在将订单的所有详细信息输出到表格中以显示结帐页面。我只想要数组信息

fields = new Array;
          fields[0] = database.substring( 0, Token0 );                 // Product ID
          fields[1] = database.substring( Token0+1, Token1 );          // Quantity
          fields[2] = database.substring( Token1+1, Token2 );          // Price
          fields[3] = database.substring( Token2+1, Token3 );          // Product Name/Description
          fields[4] = database.substring( Token3+1, Token4 );          // Shipping Cost
          fields[5] = database.substring( Token4+1, database.length ); //Additional Information

循环并保存到一个字符串中。然后将所有订单详细信息放在一个字符串上,然后我可以将其保存到 php.ini 中的文本文件中。(我们目前没有使用 SQL。

到目前为止,我的尝试只得到了购物车中的最后一项,或者循环也在编写 html 表格代码。这是一个uni分配,我们不打算编辑基本的购物车功能,但我认为将客户和订单详细信息保存到文本文件会更有用。

//---------------------------------------------------------------------||
// FUNCTION:    CheckoutCart                                           ||
// PARAMETERS:  Null                                                   ||
// RETURNS:     Product Table Written to Document                      ||
// PURPOSE:     Draws current cart product table on HTML page for      ||
//              checkout.                                              ||
//---------------------------------------------------------------------||
function CheckoutCart( ) {
   var iNumberOrdered = 0;    //Number of products ordered
   var fTotal         = 0;    //Total cost of order
   var fTax           = 0;    //Tax amount
   var fShipping      = 0;    //Shipping amount
   var strTotal       = "";   //Total cost formatted as money
   var strTax         = "";   //Total tax formatted as money
   var strShipping    = "";   //Total shipping formatted as money
   var strOutput      = "";   //String to be written to page
   var bDisplay       = true; //Whether to write string to the page (here for programmers)
   var strPP          = "";   //Payment Processor Description Field

   iNumberOrdered = GetCookie("NumberOrdered");
   if ( iNumberOrdered == null )
      iNumberOrdered = 0;

   if ( TaxByRegion ) {
      QueryString_Parse();
      fTax = parseFloat( QueryString( OutputOrderTax ) );
      strTax = moneyFormat(fTax);
   }

   if ( bDisplay )
      strOutput = "<TABLE CLASS=\"nopcart\"><TR>" +
                  "<TD CLASS=\"nopheader\"><B>"+strILabel+"</B></TD>" +
                  "<TD CLASS=\"nopheader\"><B>"+strDLabel+"</B></TD>" +
                  "<TD CLASS=\"nopheader\"><B>"+strQLabel+"</B></TD>" +
                  "<TD CLASS=\"nopheader\"><B>"+strPLabel+"</B></TD>" +
                  (DisplayShippingColumn?"<TD CLASS=\"nopheader\"><B>"+strSLabel+"</B></TD>":"") +
                  "</TR>";

   for ( i = 1; i <= iNumberOrdered; i++ ) {
      NewOrder = "Order." + i;
      database = "";
      database = GetCookie(NewOrder);

      Token0 = database.indexOf("|", 0);
      Token1 = database.indexOf("|", Token0+1);
      Token2 = database.indexOf("|", Token1+1);
      Token3 = database.indexOf("|", Token2+1);
      Token4 = database.indexOf("|", Token3+1);

      fields = new Array;
      fields[0] = database.substring( 0, Token0 );                 // Product ID
      fields[1] = database.substring( Token0+1, Token1 );          // Quantity
      fields[2] = database.substring( Token1+1, Token2 );          // Price
      fields[3] = database.substring( Token2+1, Token3 );          // Product Name/Description
      fields[4] = database.substring( Token3+1, Token4 );          // Shipping Cost
      fields[5] = database.substring( Token4+1, database.length ); //Additional Information



      fTotal     += (parseInt(fields[1]) * parseFloat(fields[2]) );
      fShipping  += (parseInt(fields[1]) * parseFloat(fields[4]) );
      if ( !TaxByRegion ) fTax = (fTotal * TaxRate);
      strTotal    = moneyFormat(fTotal);
      if ( !TaxByRegion ) strTax = moneyFormat(fTax);
      strShipping = moneyFormat(fShipping);

      if ( bDisplay ) {
         strOutput += "<TR><TD CLASS=\"nopentry\">"  + fields[0] + "</TD>";

         if ( fields[5] == "" )
            strOutput += "<TD CLASS=\"nopentry\">"  + fields[3] + "</TD>";
         else
            strOutput += "<TD CLASS=\"nopentry\">"  + fields[3] + " - <I>"+ fields[5] + "</I></TD>";

         strOutput += "<TD CLASS=\"nopentry\">" + fields[1] + "</TD>";
         strOutput += "<TD CLASS=\"nopentry\">"+ MonetarySymbol + moneyFormat(fields[2]) + "/ea</TD>";

         if ( DisplayShippingColumn ) {
            if ( parseFloat(fields[4]) > 0 )
               strOutput += "<TD CLASS=\"nopentry\">"+ MonetarySymbol + moneyFormat(fields[4]) + "/ea</TD>";
            else
               strOutput += "<TD CLASS=\"nopentry\">N/A</TD>";
         }

         strOutput += "</TR>";
      }

      if ( AppendItemNumToOutput ) {
         strFooter = i;
      } else {
         strFooter = "";
      }
      if ( PaymentProcessor != '' ) {
         //Process description field for payment processors instead of hidden values.
         //Format Description of product as:
         // ID, Name, Qty X
         strPP += fields[0] + ", " + fields[3];
         if ( fields[5] != "" )
            strPP += " - " + fields[5];
         strPP += ", Qty. " + fields[1] + "\n";
      } else {
         strOutput += "<input type=hidden name=\"" + OutputItemId        + strFooter + "\" value=\"" + fields[0] + "\">";
         strOutput += "<input type=hidden name=\"" + OutputItemQuantity  + strFooter + "\" value=\"" + fields[1] + "\">";
         strOutput += "<input type=hidden name=\"" + OutputItemPrice     + strFooter + "\" value=\"" + fields[2] + "\">";
         strOutput += "<input type=hidden name=\"" + OutputItemName      + strFooter + "\" value=\"" + fields[3] + "\">";
         strOutput += "<input type=hidden name=\"" + OutputItemShipping  + strFooter + "\" value=\"" + fields[4] + "\">";
         strOutput += "<input type=hidden name=\"" + OutputItemAddtlInfo + strFooter + "\" value=\"" + fields[5] + "\">";

      } 

   }

   if ( bDisplay ) {
      strOutput += "<TR><TD CLASS=\"noptotal\" COLSPAN=3><B>"+strSUB+"</B></TD>";
      strOutput += "<TD CLASS=\"noptotal\" COLSPAN=2 ALIGN=RIGHT><B>" + MonetarySymbol + strTotal + "</B></TD>";
      strOutput += "</TR>";

      if ( DisplayShippingRow ) {
         strOutput += "<TR><TD CLASS=\"noptotal\" COLSPAN=3><B>"+strSHIP+"</B></TD>";
         strOutput += "<TD CLASS=\"noptotal\" COLSPAN=2 ALIGN=RIGHT><B>" + MonetarySymbol + strShipping + "</B></TD>";
         strOutput += "</TR>";
      }

      if ( DisplayTaxRow || TaxByRegion ) {
         strOutput += "<TR><TD CLASS=\"noptotal\" COLSPAN=3><B>"+strTAX+"</B></TD>";
         strOutput += "<TD CLASS=\"noptotal\" COLSPAN=2 ALIGN=RIGHT><B>" + MonetarySymbol + strTax + "</B></TD>";
         strOutput += "</TR>";
      }

      strOutput += "<TR><TD CLASS=\"noptotal\" COLSPAN=3><B>"+strTOT+"</B></TD>";
      strOutput += "<TD CLASS=\"noptotal\" COLSPAN=2 ALIGN=RIGHT><B>" + MonetarySymbol + moneyFormat((fTotal + fShipping + fTax)) + "</B></TD>";
      strOutput += "</TR>";

      strOutput += "</TABLE>";


      if ( PaymentProcessor == 'an') {
         //Process this for Authorize.net WebConnect
         strOutput += "<input type=hidden name=\"x_Version\" value=\"3.0\">";
         strOutput += "<input type=hidden name=\"x_Show_Form\" value=\"PAYMENT_FORM\">";
         strOutput += "<input type=hidden name=\"x_Description\" value=\""+ strPP + "\">";
         strOutput += "<input type=hidden name=\"x_Amount\" value=\""+ moneyFormat((fTotal + fShipping + fTax)) + "\">";
      } else if ( PaymentProcessor == 'wp') {
         //Process this for WorldPay
         strOutput += "<input type=hidden name=\"desc\" value=\""+ strPP + "\">";
         strOutput += "<input type=hidden name=\"amount\" value=\""+ moneyFormat((fTotal + fShipping + fTax)) + "\">";
      } else if ( PaymentProcessor == 'lp') {
         //Process this for LinkPoint         
         strOutput += "<input type=hidden name=\"mode\" value=\"fullpay\">";
         strOutput += "<input type=hidden name=\"chargetotal\" value=\""+ moneyFormat((fTotal + fShipping + fTax)) + "\">";
         strOutput += "<input type=hidden name=\"tax\" value=\""+ MonetarySymbol + strTax + "\">";
         strOutput += "<input type=hidden name=\"subtotal\" value=\""+ MonetarySymbol + strTotal + "\">";
         strOutput += "<input type=hidden name=\"shipping\" value=\""+ MonetarySymbol + strShipping + "\">";
         strOutput += "<input type=hidden name=\"desc\" value=\""+ strPP + "\">";
      } else {
         strOutput += "<input type=hidden name=\""+OutputOrderSubtotal+"\" value=\""+ MonetarySymbol + strTotal + "\">";
         strOutput += "<input type=hidden name=\""+OutputOrderShipping+"\" value=\""+ MonetarySymbol + strShipping + "\">";
         strOutput += "<input type=hidden name=\""+OutputOrderTax+"\"      value=\""+ MonetarySymbol + strTax + "\">";
         strOutput += "<input type=hidden name=\""+OutputOrderTotal+"\"    value=\""+ MonetarySymbol + moneyFormat((fTotal + fShipping + fTax)) + "\">";
      }
   }

   document.write(strOutput);


   document.close();
}

谢谢大家的帮助,你们已经帮了我不少忙了。我迫不及待地等到我对编程更加熟悉并且可以立即解决这些问题。

4

1 回答 1

2

更新

根据我们的讨论,这是您正在寻找的代码(或类似的东西)吗?

// Return a string containing all of the items in the cart,
// one line per item with a newline character after each line,
// and the fields in each line separated by | characters.
function getCartString() {
    var result = '',
        count = GetCookie('NumberOrdered') || 0;
    for( var i = 1;  i <= count;  i++ ) {
        result += GetCookie( 'Order.' + i ) + '\n';
    }
    return result;
}

这段代码有什么你不明白的吗?我很乐意解释。它产生的格式是您想要的吗?如果不是,请详细描述您想要的格式,并且生成它应该是微不足道的 - 现在来自该nopcart.js罚款的糟糕代码已经消失,所以它不会让我们所有人感到困惑。

原始答案

你写的代码太多了!当你有如此多的重复时,它很难跟上,而且很容易出错。

编辑:笑话是在我身上!这不是你写的代码,也不是你的教授或任何类似的人写的代码,它是“动态 HTML”时代遗留下来的一些可怕的脚本。不过,对于必须处理这样的脚本的任何人,以下内容可能会有一两个有用的提示。:-)

你现在最重要的事情是如何简化你的代码。两个领域特别突出:

  1. 尽可能使用内置的 JavaScript 功能而不是手动编码。
  2. 每当你发现自己重复了一段代码时,就把它变成一个函数。

这是一个例子:

database = "";
database = GetCookie(NewOrder);

Token0 = database.indexOf("|", 0);
Token1 = database.indexOf("|", Token0+1);
Token2 = database.indexOf("|", Token1+1);
Token3 = database.indexOf("|", Token2+1);
Token4 = database.indexOf("|", Token3+1);

fields = new Array;
fields[0] = database.substring( 0, Token0 );                 // Product ID
fields[1] = database.substring( Token0+1, Token1 );          // Quantity
fields[2] = database.substring( Token1+1, Token2 );          // Price
fields[3] = database.substring( Token2+1, Token3 );          // Product Name/Description
fields[4] = database.substring( Token3+1, Token4 );          // Shipping Cost
fields[5] = database.substring( Token4+1, database.length ); //Additional Information

该代码可以替换为:

var database = GetCookie(NewOrder);
var fields = database.split('|');

对真的!这完全一样。(嗯,不完全正确。正如你所看到的,它不会创建所有的Token0,Token1等变量,但无论如何这些变量都不会在其他任何地方使用。)

此外,您应该完全删除这些注释,而不是所有描述fields[0]fields[1]等含义的注释,而是为所有这些字段创建命名变量:

var database = GetCookie(NewOrder);
var fields = database.split('|'),
    productID = fields[0],
    quantity = parseInt( fields[1], 10 ),
    price = +fields[2],
    description = fields[3],
    shipping = +fields[4],
    moreInfo = fields[5];

然后在其余代码中,您可以将所有fields[n]引用替换为这些名称。例如,这段代码:

 fTotal += ( parseInt(fields[1]) * parseFloat(fields[2]) );

可以替换为:

 fTotal += quantity * price;

这样更易读,不是吗?

相关说明:

  1. 如果使用parseInt(),请始终在第二个参数中提供显式基数。否则,如果用户碰巧输入“010”,它将被转换8为可能不是预期的。
  2. 为了简单起见,您可以使用+someString而不是parseFloat(someString)

现在我将留给你一些练习。查看您有这样的代码重复多次但有细微变化的所有地方:

strOutput += "<TR><TD CLASS=\"noptotal\" COLSPAN=3><B>"+strSUB+"</B></TD>";
strOutput += "<TD CLASS=\"noptotal\" COLSPAN=2 ALIGN=RIGHT><B>" + MonetarySymbol + strTotal + "</B></TD>";
strOutput += "</TR>";

你能想出一种方法,你可以编写一次代码并多次调用它,传递每个实例更改的项目吗?例如在这段代码的重复中,除了你输入strSUB和的地方之外,每次都是一样的Symbol + strTotal。代码重复的下一个地方,它有strSHIPMonetarySymbol + strShipping在那些地方,但其他地方是相同的。等等。

在 JavaScript 中有没有办法编写一段可重用的代码,你可以在其中传递这样的参数,所以大部分代码只出现一次,你给它每个实例的参数?

最后,一个小的文体说明。你的一些 HTML 有<lowercasetags>,一些有<UPPERCASETAGS>. 无论大小写,浏览器都会以相同的方式处理这些内容,但最好保持一致,现代 JavaScript/HTML 代码使用<lowercasetags>.

于 2013-05-31T05:13:35.460 回答