我是javascript新手。我有一個名為sendToQuickPrinter（）的打印機函數，它可以正常打印，但是當該腳本完成時，我需要自動提交表單以返回到我的“ cart.php”頁面。我想我真的很親密。請幫忙。<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>