这是我的文本框，id为brgy_name:
<select name="brgy_name" class="" style="width:240px" id="brgy_name" required >
<option value="">Select Barangay</option>
<option value="ALL">ALL</option>
<?php $result = pg_query("SELECT * FROM tbl_barangay order by cbrgyname");
while($row = pg_fetch_array($result)){ ?>
<option value="<?php echo $row['cbrgyname']; ?>"><font style="margin-top:-20px"><?php echo $row['cbrgyname'];?></font></option>
<?php } ?>
</select>
<input type="hidden" id="asgn_brgy" value="<?php echo $_POST['brgy_name']; ?>">
<input type="hidden" id="frm" value="<?php echo $_POST['fromyear']; ?>">
<input type="hidden" id="to" value="<?php echo $_POST['toyear']; ?>">
<input type="hidden" id="usertype" value="<?php echo $_SESSION['admin_usertype'] ?>"> <!--ADMIN-->
<input type="hidden" id="userbrgy" value="<?php echo $_SESSION['admin_brgycode'] ?>"> <!--TAGUIBO-->
这是我的脚本：
<script text="text/javascript">
var holderu = document.getElementById('usertype').value;
var holderb = document.getElementById('userbrgy').value;
if(holderu=='ADMIN'){
}else{
}
</script>
如果holderu=="ADMIN"为true。。我想把holderb的值放入文本框中。。
我希望这会有所帮助。。
<script text="text/javascript">
var holderu = document.getElementById('usertype').value;
var holderb = document.getElementById('userbrgy').value;
if(holderu=='ADMIN'){
$("#brgy_name").empty();
var select = '<option>'+holderb+'</option>';
$("#brgy_name").append(select);
$("#brgy_name").prop('disabled',true);
}else{
//your code
}
<script text="text/javascript">
var holderu = document.getElementById('usertype').value;
var holderb = document.getElementById('userbrgy').value;
if(holderu=='ADMIN'){
document.getElementById('brgy_name').innerHTML = ('<option>+holderb+
</option>');
}
else{
}
要添加一个选项来选择并从中删除一个，您可以这样做：
var holderu = document.getElementById('usertype');
var holderb = document.getElementById('userbrgy');
if (holderu.value == 'ADMIN') {
var sel = document.getElementById('brgy_name');
var option = document.createElement("option");
option.text = holderb.value;
option.value = holderb.value;
sel.add(option);
sel.removeChild( sel.options[0] ); //To remove the 1st option which is `Select Barangay`
}