Question

我在jsp中有表单。我有一个javascript函数，当它们都满了时动态添加字段。我的表单是100％工作，但我注意到我把元标记放在了头部之外。当我把它放回头部时，功能不再起作用了。为什么呢？

编辑：错误是“var rowCount = table.rows.length;”在javascript中。当元标记在头部之外时，rowCount正在工作，但当它在内部时，rowCount从0开始。

javascript函数：

function addRespDropDownAjax( currentNumberOfDropDown ) {
   // Prepare a new ajaxRequest.
   if( window.XMLHttpRequest ) {
      // code for IE7+, Firefox, Chrome, Opera, Safari
      xmlhttp = new XMLHttpRequest();
   }
   else {// code for IE6, IE5
      xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
   }
   // Ajax receiving the response in this function
   xmlhttp.onreadystatechange = function()  {
      // state 4 is response ready.
      // Status 200 is page found.
      if( xmlhttp.readyState == 4 && xmlhttp.status == 200) {
         //Change the content of the select to ajax result.
         var content = [];
         content = decode(xmlhttp.responseText);
         var table = document.getElementById('tableDropDownResp');
         var rowCount = table.rows.length;
         alert(rowCount);
         var row = table.insertRow(rowCount);
         var cell1 = row.insertCell(0);
         var cell2 = row.insertCell(1);
         var cell3 = row.insertCell(2);
         var cell4 = row.insertCell(3);
         cell1.innerHTML = content[0];
         cell2.innerHTML = content[1];
         cell3.innerHTML = content[2];
         cell4.innerHTML = content[3];
         updateLastTaskCodeSelect();
      }
   };
   // Send the Ajax request.
   xmlhttp.open(
      'GET',
      'mainServlet?command=ajax.AddRespDropDown&NUMBER_OF_DROP_DOWN=' +
         currentNumberOfDropDown,
      true );
   xmlhttp.send();
}

jsp表单：

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">

<head>

    <link href="css/edit.css" rel="stylesheet" type="text/css" />
    <script type="text/javascript" src="js/form.js"></script>
    <script type="text/javascript" src="js/popupCalendar.js"></script>

    <title>IMG - Oracle Access Request</title>
</head>

<body>
    <jsp:include page="../menuBar.jsp" />
    <div class="body">
        <jsp:include page="Formulaire/table1.jsp" >
            <jsp:param name="isCreation" value="0" />
        </jsp:include>

        <jsp:include page="Formulaire/table2.jsp" />

        <jsp:include page="Formulaire/table3.jsp" />
        <a class="submitButton" id="submit" onclick="sendRequest('MODIFICATION')">Send Request</a>
    </div>
</body>

头部内的元标记不起作用

0 个答案: