我的问题是我想从此处的表格列中获取带有照片的特定项目[1]:https://i.ibb.co/4KcwScM/Captfffffure.png “标题的第一项”我想获取这个特定值并隐藏和可见某些选项
这里是解释更多的代码，我希望当人们选择这个特定标题时，它会向他们显示另一个特定部分，在这张照片中[2]:https://i.ibb.co/hyRcfPS/Carrrrrrrrrrrrrrrrrpture.png “该部分将显示”，当它们显示其他选项时，它将隐藏前一部分，并对所有其他选项显示一个新部分[3]:https://i.ibb.co/K05PpkL/Capturffffffffffae.png“这个解释了一切”。
<label style="margin-left:20px; padding: 0 20px;
margin-bottom: 39px;">كيف نساعدك؟ </label><select name="topic" id="type" Required="Required">
<option>اختر الخدمة</option>
<?php
// Make the connection:
$connection = mysqli_connect ('localhost', '#', '#', '#');
// If no connection could be made, trigger an error:
if ($connection->connect_error)
{
die("Database selection failed: " . $connection->connect_error);
}
# Set encoding to match PHP script encoding.
mysqli_set_charset($connection, 'utf8');
$query = "SELECT * FROM newservices";
$select_newservice = mysql_query($query);
while ($row = @mysql_fetch_assoc($select_newservice)) {
echo "<option value=\"".$row['id']."\">".$row['title']."</option>\n ";
}
?>
</select><br>
此代码位于第一个代码之后
<div id="price">
<label style=" margin-left: 136px;
margin-bottom: 30px; padding: 0 20px;">سعر الخدمة</label><select disabled style="
-webkit-appearance: none;
" Required="Required">
<option>0$</option>
</select>
</div>
<div id="tax">
<label style="margin-left:40px; padding: 0 20px;"> سعر الخدمة شامل الضريبة</label><span class='prisee'>0$</span><br>
</div>
这是它的ajax
<script>
$("select[name='topic']").on("change",function(e) {
e.preventDefault();
//getting selected value
var topic=$(this).val();
console.log(topic);
$.ajax({
type: 'POST',
url: 'contactusprise.php',
data: {'topic': topic },//<-passing value to php
success: function(php) {
$("#price").html(php);//<--response will show in div with id=price
}
});
});
</script>
<script>
$("select[name='topic']").on("change",function(e) {
e.preventDefault();
//getting selected value
var topic=$(this).val();
console.log(topic);
$.ajax({
type: 'POST',
url: 'contactustax.php',
data: {'topic': topic },//<-passing value to php
success: function(php) {
$("#tax").html(php);//<--response will show in div with id=price
}
});
});
</script>
这是代码，其他的相同但行不同
<?php
// Make the connection:
$connection = mysqli_connect ('localhost', '#', '#', '#');
// If no connection could be made, trigger an error:
if ($connection->connect_error)
{
die("Database selection failed: " . $connection->connect_error);
}
$topic=$_POST['topic'];//<-getting value which is passed from ajax
# Set encoding to match PHP script encoding.
mysqli_set_charset($connection, 'utf8');
//here column name will be name of coulmn which you need to compare
$query = "SELECT * FROM newservices where id= ".$topic;
$select_newservice = mysqli_query($connection, $query);
echo '<label style=" margin-left: 136px;
margin-bottom: 30px;padding: 0 20px;">السعر بضريبة البيبال</label><select style="
-webkit-appearance: none;
" disabled name="topic1" Required="Required">';
while ($row = mysqli_fetch_assoc($select_newservice)) {
echo "<option value=\"".$row['id']."\" >".$row['tax']."</option>\n ";
}
echo "</select>";
?>
特定项目的这一部分的代码，从特定列中我已经找到了选择该项目并显示它的解决方案，问题是它获取了选择的所有项目的部分，并且当选择不是时我想隐藏这个项目 特定项目的此部分的代码
<div id="containeer" >
<div id="chango" style="
display: inline-flex;
width: 286px;
">
<label style="margin-left:20px; padding: 0 20px;
margin-bottom: 39px;">عدد الصفحات </label> <input type="text" class="form-controle" name="topic1" placeholder="اختر العدد" style="
width: 118px;
text-align-last: center;
">
</div>
<div id="wprice" style="display: inline-flex;
width: 286px;" >
<label style="margin-left:20px; padding: 0 20px;
margin-bottom: 39px;">عدد الكلمات</label><select style="-webkit-appearance: none; width:118px;
text-align-last: center;" Required="Required">
</select>
</div>
<div id="pricee" style="
display: inline-flex;
width: 286px;
">
<label style=" margin-left: 136px;
margin-bottom: 30px; padding: 0 20px;">السعر الاجمالي</label><select disabled style="
-webkit-appearance: none;margin-right: -65px;
" Required="Required">
<option>0$</option>
</select>
</div>
<div id="pricees" style="
display: inline-flex;
width: 286px;
">
<label style=" margin-left: 61px;
margin-bottom: 30px; padding: 0 13px;">السعر الاجمالي شامل الضريبة</label><select disabled style="
-webkit-appearance: none;margin-right: -60px;
" Required="Required">
<option>0$</option>
</select>
</div>
</div>
这里是ajax代码
<script>
$("input[name='topic1']").on("change",function(e) {
e.preventDefault();
//getting selected value
var topic1=$(this).val();
console.log(topic1);
$.ajax({
type: 'POST',
url: 'wpcontactusnum.php',
data: {'topic1': topic1 },//<-passing value to php
success: function(php) {
$("#wprice").html(php);//<--response will show in div with id=price
}
});
});
</script>
<script>
$("input[name='topic1']").on("change",function(e) {
e.preventDefault();
//getting selected value
var topic1=$(this).val();
console.log(topic1);
$.ajax({
type: 'POST',
url: 'price_pages.php',
data: {'topic1': topic1 },//<-passing value to php
success: function(php) {
$("#pricee").html(php);//<--response will show in div with id=price
}
});
});
</script>
<script>
$("input[name='topic1']").on("change",function(e) {
e.preventDefault();
//getting selected value
var topic1=$(this).val();
console.log(topic1);
$.ajax({
type: 'POST',
url: 'taxprice_pages.php',
data: {'topic1': topic1 },//<-passing value to php
success: function(php) {
$("#pricees").html(php);//<--response will show in div with id=price
}
});
});
</script>
有 wpcontactusnum.php 代码，其他相同但行不同
<?php
// Make the connection:
$connection = mysqli_connect ('localhost', '#', '#', '#');
// If no connection could be made, trigger an error:
if ($connection->connect_error)
{
die("Database selection failed: " . $connection->connect_error);
}
$topic1=$_POST['topic1'];//<-getting value which is passed from ajax
# Set encoding to match PHP script encoding.
mysqli_set_charset($connection, 'utf8');
//here column name will be name of coulmn which you need to compare
$query = "SELECT * FROM details where pages= ".$topic1;
$select_detail = mysqli_query($connection, $query);
echo '<label style=" margin-left: 31px;
margin-bottom: 39px;padding: 0 20px;">عدد الكلمات</label><select style="
-webkit-appearance: none;width: 118px;
text-align-last: center;
" disabled name="topic1" Required="Required">';
while ($row = mysqli_fetch_assoc($select_detail)) {
$detail_words = $row['words'];
echo "<option value=\"".$row['pages']."\" >".$row['words']."</option>\n ";
}
echo "</select>";
?>
最佳答案
要检查所选选项是第一个还是第二个，您可以执行以下操作:
Ajax 代码:
$("select[name='topic']").on("change",function(e) {
e.preventDefault();
//checking if first option is selected
if($(this)[0].selectedIndex == 0)
{
//hide topic1
$("select[name='topic1']").hide();
//show price and tax
$("#price").show();
$("#tax").show();
}
else if($(this)[0].selectedIndex == 1) {
//hide price and tax
$("#price").hide();
$("#tax").hide();
//show topic1
$("select[name='topic1']").show();
}
});
关于php - 如何从 MySQL 中的表的列中获取特定项目并使用它来使另一个 <select> 更改其可见性，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/57411204/