我真的无法在网络上的任何地方找到解决方案，因为我的问题有点独特。
我有两个单选按钮:部门和外部。单击该按钮后，“部门”单选按钮将显示下拉列表，“外部”单选按钮将显示一个输入文本框。
这是我制作的 Html 代码。
<html>
<head>
<title> Submit a Contract </title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script type="text/javascript">
function ShowHideDiv() {
var client1 = document.getElementById("client1");
var client2 = document.getElementById("client2");
var division = document.getElementById("division");
var external = document.getElementById("external");
division.style.display = client1.checked ? "block" : "none";
external.style.display = client2.checked ? "block" : "none";
}
function showfield(name){
if(name=='Other')document.getElementById('div1').innerHTML='<input type="text" name="client_details" value="" />';
else document.getElementById('div1').innerHTML='';
}
</script>
</head>
<body>
<form method="post" action="" enctype="multipart/form-data">
<label for = "client1">
<input type="radio" name="client_type" id = "client1" value="Division" onclick="ShowHideDiv()"/> Division
</label>
<label for ="client2">
<input type="radio" name="client_type" id = "client2" value="External" onclick="ShowHideDiv()"/> External
</label>
<br><br>
<div id="division" style="display:none">
Division:
<select name="client_details" onchange="showfield(this.options[this.selectedIndex].value)">
<option value="">Choose Division...</option>
<option value="Distribution">Distribution</option>
<option value="Transmission">Transmission</option>
<option value="Generation">Generation</option>
<option value="Procument">Procument</option>
<option value="Other">Others</option>
</select>
<br><br>
<div id="div1"></div>
</div>
 
<div id="external" style="display:none">
External:
<input type="text" name="client_details" value=""/>
</div>
<br><br>
<input type="submit" name="submit" value="Submit"/>
</form>
</body>
</html>
这是 php 代码。
<?php
require("config.php");
if(isset($_POST['submit']))
{
$client_type = isset($_POST ['client_type']) ? $_POST['client_type'] :null;
$client_details = isset($_POST ['client_details']) ? $_POST['client_details'] :null;
$sql = "SELECT * FROM contracts";
$query = "INSERT INTO contracts
(
`client_type`,
`client_details`) VALUES (
'$client_type',
'$client_details')" ;
if ($con->query($query) === TRUE)
{
echo "<br><br> New record created successfully";
echo $query;
}
else {
echo "Error: " . $query . "<br>" . $con->error;
}
$con->close();
}
?>
外部单选按钮和输入文本框工作正常，因为这两个值都已成功插入数据库。
但对于division，它仅插入值Division。
我做错了什么？
最佳答案
试试这个:
我已将类型条件放在代码开头，并更改了下拉列表的名称。
你的 PHP 代码
<?php
require("config.php");
if(isset($_POST['submit']))
{
echo $client_type = isset($_POST ['client_type']) ? $_POST['client_type'] :null;
if($client_type == 'Division'){
$client_details = isset($_POST ['client_details1']) ? $_POST['client_details1'] :null;
}
else{
$client_details = isset($_POST ['client_details']) ? $_POST['client_details'] :null;
}
echo $query = "INSERT INTO contracts
(
`client_type`,
`client_details`) VALUES (
'$client_type',
'$client_details')" ;
if ($con->query($query) === TRUE)
{
echo "<br><br> New record created successfully";
echo $query;
}
else {
echo "Error: " . $query . "<br>" . $con->error;
}
$con->close();
}
?>
您的 HTML 代码
<html>
<head>
<title> Submit a Contract </title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script type="text/javascript">
function ShowHideDiv() {
var client1 = document.getElementById("client1");
var client2 = document.getElementById("client2");
var division = document.getElementById("division");
var external = document.getElementById("external");
division.style.display = client1.checked ? "block" : "none";
external.style.display = client2.checked ? "block" : "none";
}
function showfield(name){
if(name=='Other')document.getElementById('div1').innerHTML='<input type="text" name="client_details" value="" />';
else document.getElementById('div1').innerHTML='';
}
</script>
</head>
<body>
<form method="post" action="" enctype="multipart/form-data">
<label for = "client1">
<input type="radio" name="client_type" id = "client1" value="Division" onclick="ShowHideDiv()"/> Division
</label>
<label for ="client2">
<input type="radio" name="client_type" id = "client2" value="External" onclick="ShowHideDiv()"/> External
</label>
<br><br>
<div id="division" style="display:none">
Division:
<select name="client_details1" onchange="showfield(this.options[this.selectedIndex].value)">
<option value="">Choose Division...</option>
<option value="Distribution">Distribution</option>
<option value="Transmission">Transmission</option>
<option value="Generation">Generation</option>
<option value="Procument">Procument</option>
<option value="Other">Others</option>
</select>
<br><br>
<div id="div1"></div>
</div>
 
<div id="external" style="display:none">
External:
<input type="text" name="client_details" value=""/>
</div>
<br><br>
<input type="submit" name="submit" value="Submit"/>
</form>
</body>
</html>
关于javascript - PHP 下拉列表所选值未插入数据库，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42666685/