我正在尝试从下拉列表中获取数据并将其发布到文本框中。但由于某种原因,我也没有得到任何响应,需要在文本框中显示Error
消息。
首先,这是我的下拉列表:
<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "db";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "SELECT * FROM products";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
echo "<select class='form-control' id='product1' name='product1' onChange='getProduct1(this.value)' style='width: 100%;'>";
echo "<option selected disabled hidden value=''></option>";
// output data of each row
while($row = $result->fetch_assoc()) {
echo "<option value='" . $row["id"]. "'>" . $row["article_id"]. " | " . $row["name"]. "</option>";
}
echo "</select>";
} else {
echo "0 results";
}
$conn->close();
?>
在下拉列表中选择项目后,脚本需要将. $row["name"].
粘贴到以下文本框中:
<input type="text" class="form-control" id="product11" name="product11">
我用来粘贴名称的jquery脚本是以下脚本:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>
function getProduct1(selectedItem) { // Do an Ajax request to retrieve the information
console.log("getProduct1 before ajax", jQuery('#product1').val());
jQuery.ajax({
url: 'get.php',
method: 'POST',
data: {'product1' : jQuery('#product1').val()},
success: function(response){
// and put the price in text field
console.log("getProduct1 after ajax", jQuery('#product1').val());
jQuery('#product11').val(response);
},
error: function (request, status, error) {
alert(request.responseText);
},
});
}
</script>
该脚本使用以下与数据库连接的PHP脚本并检索相关信息:
<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "db";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname) ;
// Check connection
if ($conn->connect_error) {
die('Connection failed: ' . $conn->connect_error) ;
}else {
$product1 = isset($_POST['produc1t'])?$_POST['product1']:'';
$product11 = isset($_POST['product11'])?$_POST['product11']:'';
$query = 'SELECT * FROM products WHERE id="' . mysqli_real_escape_string($conn, $product1) . '"';
$res = mysqli_query($conn, $query) ;
if (mysqli_num_rows($res) > 0) {
$result = mysqli_fetch_assoc($res) ;
echo $result['product11'];
}else{
$result = mysqli_fetch_assoc($res) ;
echo "Error";
}
}
?>
当我通过在下拉列表中选择一个选项来运行脚本时,没有任何事情发生。有谁知道我的剧本有什么问题?
答案 0 :(得分:1)
我不确定您是否应该再次查询数据库以获取已检索的值。这样的事情应该有效:
jQuery( document ).ready(function() {
jQuery( "#product1" ).change(function(){
var name = jQuery( "#product1 option:selected" ).text().split('|')[1];
jQuery("#product11").val(name);
});
});
您不需要HTML中的javascript / jQuery命令