Question

我想为下拉选择设置一个默认值。

例如krik值为('pt123', 'washington', 'rob case', 'rob', 'rob')。我想根据val4设置选择，这是电话卡ID。

问题：从krik到input hidden的值正在运行..但是设置选中是失败的..当我设置警报时，显示该值未定义。。

如何从隐藏字段中获取值以比较$sel条件..

请帮助..我已经尝试了几天......这让我思索了好几天。

function krik(val1, val2,val3,val4,val5) {
    var calID = val1;
    var calLoc = val2;
    var calCase = val3;
    var calCar = val4;
    var casecod = val5;
    $("#formkes-dialog").dialog("open");
    $('#formkes-dialog').dialog({
         title: $('#formkes-dialog').prop('title') + calCar
    });
    $("#CallerId").val(calID);
    $("#CrimeLocation").val(calLoc);
    $("#CaseDesc").val(calCase);
    $("#casecod").val(casecod);
}

<input type="hidden"  name="casecod" id="casecod" />

<script type="text/javascript">
    <!-- var mytextvalue = document.getElementById("casecod").value; -->
    alert(document.getElementById('casecod').val); 
</script>
          
 <?php 
     $sel = $_GET['casecod'];
 ?>

 <select name="CaseCode" id="CaseCode" >

     <option >Pilih</option>

     <option selected='<?php (($sel == "case1")?"selected":"") ?>' value="case1">Gaduh</option>

     <option selected='<?php (($sel == "case2")?"selected":"") ?>' value="case2">Rompak</option>

     <option selected='<?php (($sel == "case3)?"selected":"") ?>' value="case3">Kemalangan</option>

 </select>

Answer 1

首先在隐藏字段中指定值。

Eg:

<input type="hidden"  name="casecod" id="casecod" value="demo_value" />

用以下内容替换js： -

Use '.value' instead of '.val'.
<script type="text/javascript">
            <!-- var mytextvalue = document.getElementById("casecod").value; -->
            alert(document.getElementById('casecod').value); 
</script>

Answer 2

检查

＆＃13;

function krik(val1, val2,val3,val4,val5) {
    var calID = val1;
    var calLoc = val2;
    var calCase = val3;
    var calCar = val4;
    var casecod = val5;
    $("#formkes-dialog").dialog("open");
    $('#formkes-dialog').dialog({
         title: $('#formkes-dialog').prop('title') + calCar
    });
    $("#CallerId").val(calID);
    $("#CrimeLocation").val(calLoc);
    $("#CaseDesc").val(calCase);
    $("#casecod").val(casecod);
}

＆＃13;

<input type="hidden"  name="casecod" id="casecod" />

<script type="text/javascript">
    <!-- var mytextvalue = document.getElementById("casecod").value; -->
    alert(document.getElementById('casecod').value); 
</script>
          
 <?php 
     $sel = $_GET['casecod'];
 ?>

 <select name="CaseCode" id="CaseCode" >

     <option value="pilih" >Pilih</option>

     <option selected='<?php (($sel == "case1")?"selected":"") ?>' value="case1">Gaduh</option>

     <option selected='<?php (($sel == "case2")?"selected":"") ?>' value="case2">Rompak</option>

     <option selected='<?php (($sel == "case3")?"selected":"") ?>' value="case3">Kemalangan</option>

 </select>

＆＃13;

Answer 3

同样更正选项From

<option selected='<?php (($sel == "case3)?"selected":"") ?>' value="case3">Kemalangan</option>

要

  <option selected='<?php (($sel == "case3")?"selected":"") ?>' value="case3">Kemalangan</option>

然后检查。

Answer 4

我juz得到了答案..这是juz becoz我在页面顶部声明查询以获取casecod数据.. :) ....谢谢所有.. juz一个简单的事情，但用得很难。。

＆＃13;

<?php

session_start();


require_once("includes/conn.php");

$sql_select = "SELECT * FROM report WHERE Status = '1'";
$result = mysql_query($sql_select);
$test = mysql_fetch_array($result);

$CaseCode =$test['CaseCode'];

?>

 <select name="CaseCode" id="CaseCode">

            <option>--choose one--</option>

            <option selected="<?php (($CaseCode == "Kidnap" || $CaseCode == "kidnap")?'selected':'') ?>"          value="Kidnap">Kidnapped</option>

            <option selected="<?php (($CaseCode == "Robbery" || $CaseCode == "robbery")?'selected':'') ?>" value="Robbery">Robbery</option>

            <option selected="<?php (($CaseCode == "Wilderness" || $CaseCode == "wilderness")?'selected':'') ?>" value="Wilderness">Wilderness</option>

          </select>

＆＃13;

从隐藏值下拉列表中选择默认值

4 个答案: