打印机脚本运行后，Javascript自动提交未执行

Question

我是javascript新手。我有一个名为sendToQuickPrinter（）的打印机函数，它可以正常打印，但是当该脚本完成时，我需要自动提交表单以返回到我的“ cart.php”页面。我想我真的很亲密。请帮忙。<script>function sendToQuickPrinter(){    var text =    "<CENTER><MEDIUM2><?php echo $shop_name ?><BR>" +    "<CENTER><?php echo $display_date ?>        <?php echo $display_time ?><BR><BR>" +    "Description          Price<BR>" +    "<?php $i=0;while($i < $print_count){$i=$i+1; echo $p_name_array[$i].';; ;;'.$transaction_qty_array[$i].' @ '.number_format($p_price_array[$i],2).'<BR>';} ?>" +    "<BR>" +    "<CENTER>Sub-total      $<?php echo number_format($subtotal,2) ?><BR>" +    "<CENTER>Tax            $<?php echo number_format($subtax,2) ?><BR>" +    "<CENTER>Total          $<?php echo number_format($item_total,2) ?><BR>" +    "<BR>" +    "<CENTER>Thank you for shopping with us, we appreciate your business!<BR>" +    "<CENTER><MEDIUM2> Have a great day!<BR>" +    "<BR>" +    "<CUT>" +    "DRAWER";        var textEncoded = encodeURI(text);        window.location.href="quickprinter://"+textEncoded;        document.frm2.submit()  // !!!important- I auto submit frm2 below}sendToQuickPrinter();</script><form  action="cart.php" name="frm2" method="post">    <input type="hidden" name="longitude" id="getlon" />    <input type="hidden" name="latitude" id="getlat" />    <input type="hidden" name="shop_name" value="<?php echo $shop_name ?>" /></form>

Answer 1

将您的脚本移到</body>标记之前或下方，form它将起作用。

    

    function sendToQuickPrinter(){

    

        var text =

        "<CENTER><MEDIUM2><?php echo $shop_name ?><BR>" +

        "<CENTER><?php echo $display_date ?>        <?php echo $display_time ?><BR><BR>" +

        "Description          Price<BR>" +

        "<?php $i=0;while($i < $print_count){$i=$i+1; echo $p_name_array[$i].';; ;;'.$transaction_qty_array[$i].' @ '.number_format($p_price_array[$i],2).'<BR>';} ?>" +

        "<BR>" +

        "<CENTER>Sub-total      $<?php echo number_format($subtotal,2) ?><BR>" +

        "<CENTER>Tax            $<?php echo number_format($subtax,2) ?><BR>" +

        "<CENTER>Total          $<?php echo number_format($item_total,2) ?><BR>" +

        "<BR>" +

        "<CENTER>Thank you for shopping with us, we appreciate your business!<BR>" +

        "<CENTER><MEDIUM2> Have a great day!<BR>" +

        "<BR>" +

        "<CUT>" +

        "DRAWER";

            var textEncoded = encodeURI(text);

            window.location.href="quickprinter://"+textEncoded;

    

            document.frm2.submit()  // !!!important- I auto submit frm2 below

    }

    

    //sendToQuickPrinter();

<form  action="cart.php" name="frm2" method="post">

        <input type="hidden" name="longitude" id="getlon" />

        <input type="hidden" name="latitude" id="getlat" />

        <input type="hidden" name="shop_name" value="<?php echo $shop_name ?>" />

    </form>

    

    <button id="print" click="sendToQuickPrinter();">Print</button>

Answer 2

更改document.frm2.submit()与document.forms["frm2"].submit()

function sendToQuickPrinter(){

  var text =

  "<CENTER><MEDIUM2><?php echo $shop_name ?><BR>" +

  "<CENTER><?php echo $display_date ?>        <?php echo $display_time ?><BR><BR>" +

  "Description          Price<BR>" +

  "<?php $i=0;while($i < $print_count){$i=$i+1; echo $p_name_array[$i].';; ;;'.$transaction_qty_array[$i].' @ '.number_format($p_price_array[$i],2).'<BR>';} ?>" +

  "<BR>" +

  "<CENTER>Sub-total      $<?php echo number_format($subtotal,2) ?><BR>" +

  "<CENTER>Tax            $<?php echo number_format($subtax,2) ?><BR>" +

  "<CENTER>Total          $<?php echo number_format($item_total,2) ?><BR>" +

  "<BR>" +

  "<CENTER>Thank you for shopping with us, we appreciate your business!<BR>" +

  "<CENTER><MEDIUM2> Have a great day!<BR>" +

  "<BR>" +

  "<CUT>" +

  "DRAWER";

    var textEncoded = encodeURI(text);

    window.location.href="quickprinter://"+textEncoded;

    document.forms["frm2"].submit()  // !!!important- I auto submit frm2 below

}