如何禁用选择“pelajaran” WHERE条件选择jabatan =“经营者”如何与条件价值禁用选择从数据库
<select name="id_jabatan" id="jabatan" size="1" class="form-control" required>
<option label="-- Pilih Jabatan --"></option>
<?php //query untuk looping jabatan
$sql = "SELECT * FROM tb_jabatan_guru";
$result = $koneksi->query($sql);
while ($row = $result->fetch_array()){ ?>
<option value="<?php echo $row['idJabatan'] ?>"><?php echo $row['namaJabatan']; ?></option>
<?php } ?>
</select>
<select name="id_pel" id="pelajaran" size="1" class="form-control" disabled required>
<option label="-- Pilih Pelajaran --"></option>
<?php //query untuk looping pelajaran
$sql = "SELECT * FROM tb_pelajaran";
$result = $koneksi->query($sql);
while ($row = $result->fetch_array()){ ?>
<option value="<?php echo $row['idPelajaran'] ?>"><?php echo $row['namaPelajaran']; ?></option>
<?php } ?>
</select>
<script>
document.getElementById('jabatan').onchange = function() {
document.getElementById("pelajaran").disabled = this.value == 'Operator';
}
</script>
正在加载页面时右边? (不是动态选择的) –
代码应该在问题中 - 而不是外部资源(例如Pastebin)......如果Pastebin消失会发生什么? – CD001
你写的JavaScript代码看起来应该做你想要的吗?问题是什么? –