如果我單擊選項卡，它不會回應。為什么？-有解無憂

問題是我無法點擊網站上的標簽，如果我點擊標簽；它顯示

未捕獲的型別錯誤：無法設定 null 的屬性（設定“值”）。

有沒有什么辦法解決這一問題？另外，我是初學者，我不知道如何解決這個問題。代碼是用 PHP 和 Javascript 撰寫的。

    <?php
// session_start();
require("checklogin.php");

$toolsname = "Matrix Setup";
$toolsnamepath = "index.php";
$userlogin = $loginname;
$usrgroup = $_SESSION["usrgrp"];

$str_tab = isset($_POST["str_tab"])? $_POST["str_tab"] : "";
$winwidth = isset($_POST["winwidth"])? $_POST["winwidth"] : "";
$ch = isset($_POST["ch"])? $_POST["ch"] : "";
$badgeno = isset($_SESSION["badgeno"])? $_SESSION["badgeno"] : "";

if($str_tab == ""){
  $str_tab = isset($_GET["str_tab"])? $_GET["str_tab"] : "";
}
if($winwidth == ""){
  $winwidth = isset($_GET["winwidth"])? $_GET["winwidth"] : "";
}
if($ch == ""){
  $ch = isset($_GET["ch"])? $_GET["ch"] : "";
}

echo "<html>";

echo "<head><title>$toolsname</title>";
echo "<meta http-equiv=\"X-UA-Compatible\" content=\"IE=5\">";
echo "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">";
echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"\web/css/lotmgt_edge.css\"/>";
echo "<script src=\"lotmgt.js\"></script>\n";
echo "<script src=\"setup/setup.js\"></script>\n";
echo "<script src=\"productmatrix/productmatrix.js\"></script>\n";
echo "<script src=\"simulator/simulator.js\"></script>\n";
echo "<script src=\"addmatrix/addmatrix.js\"></script>\n";
echo "<script src=\"addAVImatrix/addmatrix.js\"></script>\n";
echo "<script src=\"\web/js/eregister/pointer.js\" type=\"text/javascript\"></script>";

echo "</head>";

  echo "<body onl oad=OnLoad('" . $ch . "','" . $badgeno . "')>";

  //include($_SERVER['DOCUMENT_ROOT']."\library\common\apewsheader.php");
  //include($_SERVER['DOCUMENT_ROOT']."\library\common\db_config.inc");
  //include($_SERVER['DOCUMENT_ROOT']."\library\common\standard_defines.inc");
  include("//sgewsnant21.amk.st.com/ewsweb/wwwroot/library/common7/apewsheader.php");
  include("//sgewsnant21.amk.st.com/ewsweb/wwwroot/library/common7/db_config.inc");
  include("//sgewsnant21.amk.st.com/ewsweb/wwwroot/library/common7/standard_defines.inc");
  include("editme.php");

    echo "<form name=\"lotmgt\" method=\"post\" target=\"_self\" onsubmit=\"return false;\">";

      echo "<div style=\"position:relative; top:20px;\">";
        echo "<table cellpadding=\"3\" cellspacing=\"0\" border=\"0\" width=\"99%\">";
            echo "<tr>";
                echo "<td>";

                    for($c=0;$c<count($ary_tab);$c  ) {
                        
                    $class_tab = (($ch=="ProductMatrix" && $ary_tab[$c]=="Product Matrix" && (!isset($str_tab) || $tr_tab=="")) || ($ch=="SocketSimulator" && $ary_tab[$c]=="Socket Simulator" && (!isset($str_tab) || $str_tab=="")) || ($ch=="AVIMatrixAdd" && $ary_tab[$c]=="AVI Matrix Add" && (!isset($str_tab) || $str_tab=="")) || ($ch=="SetupPostTest" && $ary_tab[$c]=="Setup PostTest" && (!isset($str_tab) || $str_tab=="")) || ($ch=="Setup" && $ary_tab[$c]=="Setup" && (!isset($str_tab) || $str_tab=="")) || (($c==0 && !isset($str_tab)) && $ch=="") || $ary_tab[$c] == $str_tab)? "link_tab_slct" : "link_tab";
                        echo "<a href=\"Javascript:DisplayTab('" . $ary_tab[$c] . "','str_tab');\" hljs-variable">$class_tab . ">" . $ary_tab[$c] . "</a>";
                    }

                echo"</td>";
            echo"</tr>"; 
        echo"</table>";
      echo "</div>";
//echo $str_tab;
      if($str_tab != ""){

        switch($str_tab){
              case "Setup":
                  include("setup/setup.php");
                  break;
              case "Setup PostTest":
                  include("setup/setup.php");
                  break;
              case "Setup1":
                  include("setup1/setup.php");
                  break;
              case "Product Matrix":
                  include("productmatrix/productmatrix.php");
                  break;
              case "Socket Simulator":
                   // include("simulator/simulator.php");
                  include("simulator/Socket_simulator.php");
                  break;
             // case "Matrix Add":
               //   include("addmatrix/addmatrix.php");
              //    break;
              case "AVI Matrix Add":
                  include("addAVImatrix/addmatrix.php");
                  break;

          }
      }
      else {

        if ($ch=="ProductMatrix") {
            include("productmatrix/productmatrix.php");
          }
          else if($ch=="SocketSimulator"){
              // include("simulator/simulator.php");
              include("simulator/Socket_simulator.php");
          }
        else if($ch=="AVIMatrixAdd"){
              include("addAVImatrix/addmatrix.php");
          }
          else if($ch=="Setup"){
              include("setup/setup.php");
          }
          else if($ch=="SetupPost6E"){
              include("setup/setup.php");
          }
          else{
              include("setup/setup.php");
          }
      }

      //common
      echo "<input type=\"hidden\" name=\"str_tab\" value=\"" . $str_tab . "\">";
      echo "<input type=\"hidden\" name=\"winwidth\" value=\"" . $winwidth . "\">";
      echo "<input type=\"hidden\" name=\"username\" value=\"" . $loginname . "\">";

    echo "</form>";
    flush();
    mysqli_close($conn);
    
  echo "</body>";
echo "</html>";
?>

以上代碼為 index.php 代碼。

var winplanproducttoentity = '';
var winupdateauto = '';
var winupdatebytester = '';
var winupdatebyproduct = '';
var winupdatestatus = '';
var wintestlot = '';
var winassignlot = '';
var winshowlot = ''
var winchecksicom = '';

var w;
var winwidth = window.screen.width;
var div = new Array('outputdiv','setupdiv');
//var div = new Array('outputdiv','setupdiv','availdiv');

var reqHttp  = InitRequest();
var reqHttp1 = InitRequest();
var reqHttp2 = InitRequest();
var reqHttp3 = InitRequest();


function InitRequest()  {
    var request=null;

    try { 
        request=new XMLHttpRequest(); 
    } 
    catch (e)   {   
        try { 
            request=new ActiveXObject("Msxml2.XMLHTTP");    
        } 
        catch (e){ 
            request=new ActiveXObject("Microsoft.XMLHTTP"); 
        }
    }
    return request;
}

function AsynReqData(request,url,fn) {
    request.open("GET", url   '&sid='   Date()   Math.random(), true);
  request.onreadystatechange = eval(fn);
  request.send(null);
}

function SynReqData(request,url) {      
    request.open("GET", url   '&sid='   Date()   Math.random(), false); 
    request.send(null);
    return request.responseText;
} 

function DisplayTab(tabname,tabid) {
    document.getElementById(tabid).value = tabname;  // this is the $str_tab
    document.lotmgt.submit();
}

function OnLoad(ch,badgeno){
   
    var tab = document.lotmgt.str_tab.value; //  this is the $str_tab from DisplayTab function
    w = (winwidth < 1280)? 1280 : winwidth;
    
    if((tab=='' & ch=='') || tab=='Setup' || (ch=='Setup' & tab=='')) {  
    
    var p_1 = "checked";
    var T_0 = "checked";
    var zmiss = "checked";

        for(var i=0; i<div.length; i  ) {    
            document.getElementById(div[i]).className = 'hide'; 
        }
    
        // var wd = (128*5) - 10;  
        var wd = (128*7.5) - 50;  
        var lf = 0;     
        document.getElementById('filterdiv').style.width = wd   'px';
        document.getElementById('filterdiv').style.left = lf   'px';

        wd = (128*5.5) - 80;
        lf = (128*5) - 10;      // lf = (128*7) - 20;   
        document.getElementById('waferdiv').style.width = wd   'px';
        document.getElementById('waferdiv').style.left = lf   'px';
        
//  AsynReqData(reqHttp,'setup/content_wafer.php?site=','UpdateWafer');
        AsynReqData(reqHttp1,'setup/content_filter.php?site='   ''   '&badgeno='   badgeno   '&p_1='   p_1   '&T_0='   T_0   '&zmiss='   zmiss,'UpdateFilter');
    }
    
    else if (tab=='Product Matrix' || (ch=='ProductMatrix' & tab=='')){
        AsynReqData(reqHttp,'productmatrix/content_filter.php?area=','UpdatePMFilter');
    }
    // else if (tab=='Matrix Simulator' || (ch=='MatrixSimulator' & tab=='')){
    //  // AsynReqData(reqHttp,'simulator/content_filter.php?area=','UpdateSIMFilter');
    // }
    else if (tab=='Setup PostTest' || (ch=='SetupPostTest' & tab=='')){
        var p_1 = "checked";
        var T_0 = "checked";

        var wd = (128*9) - 50;  
        var lf = 0;     
        document.getElementById('filterdiv').style.width = wd   'px';
        document.getElementById('filterdiv').style.left = lf   'px';

        AsynReqData(reqHttp1,'setup/content_filter1.php?site='   ''   '&badgeno='   badgeno   '&p_1='   p_1   '&T_0='   T_0,'UpdateFilter');
    }       
}

//shared functions
function ManagePopup(except){
    var mywin = new Array('winplanproducttoentity','winupdateauto','winupdatebytester','winupdatebyproduct','winupdatestatus','wintestlot','winassignlot','winshowlot','winchecksicom');

    for(var i=0; i<mywin.length; i  )   {   
        var win = window[mywin[i]];
        if (mywin[i] == except){
            if(!win.closed && win.location) win.focus();
        }
        else{
            if(!win.closed && win.location) win.close();            
        }
    }   
}

function PlanProductToEntity(product,type){
    var w = 300;
    var h = 600;
    var winl = (screen.width - w) / 2;
    var wint = (screen.height - h) / 2;     
    var winprops = 'height=' h ',width=' w ',top=' wint ',left=' winl ',toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=no';
    
    ManagePopup('winplanproducttoentity');
    winplanproducttoentity = this.open('../lotmgt/wip/pop_assignproduct.php?product='   product   '&type='   type, 'winplanproducttoentity', winprops); 
}

以上代碼是Javascript代碼。錯誤在 Javascript 中說，如何解決？

uj5u.com熱心網友回復：

錯誤發生在 JS 代碼中，是由于 PHP 中生成的 HTML 缺少id屬性。

你似乎在這里得到了錯誤：document.getElementById(tabid).value = tabname;因為document.getElementById(tabid)是空的。

當它查找具有 id 的元素時，str_tab它沒有找到它。HTML 中唯一可能是所需元素的元素具有該屬性name="str_tab"，它是您的隱藏欄位。您必須將缺少的id="str_tab"屬性添加到此隱藏欄位。

轉載請註明出處，本文鏈接：https://www.uj5u.com/yidong/414197.html

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