將文本值onblur傳遞給同一頁面上的php函數，然后將值重新調整為另一個文本字段
[英]Passing a text value onblur to a php function on the same page and retuning a value to another text field
問題描述
我正在尋找改進的形式，如果我使用提交按鈕和$ _POST（....），那不是問題。
我正努力添加新功能。 文本字段Code（fcode），我想使用onBlur = {this.codelookup}將此值傳遞給php函數，這將在mysql db中查找代碼，並返回一個name字段，我希望將此值添加到另一個文本字段名稱（fname）。
如果可以使用提交按鈕和$ _POST ['reset']語法，則可以使它正常工作，但是我試圖在退出（onblur）代碼文本字段時執行此操作，但是沒有任何麻煩。
下面的代碼塊中的功能“ codelookup”未完成，因為我不確定如何執行此操作。 其余代碼工作正常，沒有問題。 如果您刪除“ codelookup”，則php頁面的工作原理非常好，沒有任何問題。
任何幫助是極大的贊賞。
PS：我需要保持不變，可能選擇ajax。 我在這里提供了完整的頁面代碼，沒有密碼或用戶名，它們都包含在一個php文件中。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<?php require ('header.php'); ?>
<script>
function takemehome(){
window.location.href = "./stock.php";
}
</script>
</head>
<body>
<?php require ('nav.php'); ?>
<main>
<?php
if (!isset($_SESSION['username'])){
echo "<div class=\"adminerror\" >";
echo "You have not logged in.<br>";
echo "You need to be logged in to use this page.<br>";
echo "</div>";
echo '<script type="text/javascript">',
'setTimeout(function () {',
'window.location.href = "./stock.php";',
'}, 2000);',
'</script>';
exit();
}
?>
<div class="container">
<!-- HTML Code amd data goes on here in theis section "container" -->
<h2> Add a new stock to the list. </h2>
<!-- < ? php $_PHP_SELF ? >
<form action="< ? php $_PHP_SELF ?>" method="post" width="80%, align="left">
<form action="projec_insert.php" method="post" width="80%, align="left">
-->
<?php
include 'mysqlinit.php';
include 'functions.php';
$fcode = "";
$fcodeErr = "";
session_start();
if (isset($_SESSION['username'])){
$usercheck = $_SESSION['username'];
} else {
$code = $name = $fullname = $qty = $brand = $cmmt = Null;
}
function codelookup(){
// Create connection
$conn = mysqli_connect($servername, $username, $password, $dbname);
// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
/*else {
echo "Connected to db <br><br>";
}*/
$sql = "SELECT * FROM `stock` where `stock`.code = ' ????? ' ORDER BY `pt_brand` ASC";
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0) {
// output data of each row
while($row = mysqli_fetch_assoc($result)) {
if ($brand == $row["pt_id"]) {
echo "<option value=\"" . $row["pt_id"] . "\" selected=selected> " . $row["pt_brand"] . " </option>";
} else {
echo "<option value=\"" . $row["pt_id"] . "\"> " . $row["pt_brand"] . " </option>";
}
}
} else {
}
mysqli_close($conn);
}
if(isset($_POST['reset']))
{
$code = $name = $fullname = $qty = $brand = $cmmt = Null;
}
if(isset($_POST['submit']))
{
$code = $_POST['fcode'];
$name = $_POST['fname'];
$fullname = $_POST['ffullname'];
$qty = $_POST['fqty'];
$brand = $_POST['fbrand'];
$cmmt = $_POST['fcmmt'];
$errorflag = false;
//clean the two text fields.
$code = checkInput($code);
$code = strtoupper($code);
if (empty($name)){
$name="NOT DEFINED";
$name = strtoupper($name);
} else {
$name = checkInput($name);
$name = strtoupper($name);
}
if (empty($cmmt)){
$cmmt=NULL;
} else {
$cmmt = checkInput($cmmt);
$cmmt = strtoupper($cmmt);
}
$fullname = $code . " - " . $name;
if ($qty == ""){
$qty = 0;
} else {
$qty = (int)$qty;
}
if ($brand == ""){
$brand = 1;
} else {
$brand = (int)$brand;
}
if (empty($code)) {
$fcodeErr = " <== Required field";
echo "<div class=\"error\" >";
echo "Error: Stock Code field is required to be set. <br>";
echo "</div>";
//echo "<script>alert('Errors xx have occured missing fields on form.')</script>";
//exit();
} else {
// Create connection
//$conn = mysqli_connect($servername, $username, $password, $dbname);
// Check connection
if (mysqli_connect_error()) {
echo "<div class=\"error\" >";
echo "Connection to DB has failed: " . mysqli_connect_error() . "<br>";
echo "Details of coneection string <br>";
echo "Server:" . $servername . "<br>";
echo "Username:" . $username . "<br>";
echo "dbname:" . $dbname . "<br>";
echo "</div>";
die("Connection to DB has failed: " . mysqli_connect_error());
} else {
$sql = "INSERT INTO
`stock`(
`username`,
`Code`,
`Name`,
`Full-Name`,
`Qty`,
`Brand`,
`Comments`
)
VALUES(
'$usercheck', '$code',";
if ($name == "") {
$sql = $sql . "'NOT DEFINED', ";
$sql = $sql . "'$code - NOT DEFINED',";
} else {
$sql = $sql . "'$name',";
$sql = $sql . "'$code - $name',";
}
if ($qty == "" || $qty < 1)
{
$sql = $sql . "0, ";
} else {
$sql = $sql . "$qty, ";
}
if ($brand == "" || $brand < 2)
{
$sql = $sql . " 1, ";
} else {
$sql = $sql . "$brand, ";
}
if ($cmmt == "" )
{
$sql = $sql . "NULL )";
} else {
$sql = $sql . "'$cmmt') ";
}
$result = mysqli_query($conn, $sql);
if (!result)
{
echo "<div class=\"error\" >";
echo "Connection to DB has failed: " . mysqli_connect_error() . "<br>";
echo "</div>";
die("Connection to DB has failed: " . mysqli_connect_error());
} else {
echo "<div class=\"sqlinst\" >";
echo "Record has been inserted.<br>";
//echo "SQL : " . $sql . "<br>";
echo "</div>";
$code = $name = $fullname = $qty = $brand = $cmmt = Null;
}
//$code = $name = $fullname = $qty = $brand = $cmmt = Null;;
}
} //if .. else from title field..
} //end if isset isset($_POST['submit'])
//close the mysql connection
mysqli_close($conn);
?>
<form method="post" id="add" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" width="80%, align="left">
<table class="blueTableadd">
<thead>
<tr>
<th class="ctr">Title</th>
<th >Value</th>
</tr>
<thead>
<tfoot>
<tr>
<td colspan="2">
<span class="validx"> * Inidicates a Rrequired field </span> <br>
<span class="validx"> Click <a href="./stock.php">here</a> to return to the projects list.</span>
</td>
</tr>
</tfoot>
<tbody>
<tr>
<td class="title" >Code:</td>
<td class="inputval"><input type="text" maxlength=50 name="fcode" id="fcode" size="45" value="<?php echo htmlspecialchars($code);?>" placeholder="Paint Code eg Xf-1, H123 etc..">
<span class="validx">*<?php echo $stockErr;?></span>
</td>
</tr>
<tr>
<td class="title" >Name/Color:</td>
<td class="inputval"><input type="text" maxlength=50 name="fname" id="fname" size="45" value="<?php echo htmlspecialchars($name);?>" placeholder="Paint Color Name">
</td>
</tr>
<tr>
<td class="title" >QTY OH:</td>
<td class="inputval"><input type="text" maxlength=50 name="fqty" id="fqty" size="45" value="<?php echo htmlspecialchars($qty);?>" placeholder="Quantity On Hand: Number">
</td>
</tr>
<tr>
<td class="title" >Brand:</td>
<td class="inputval">
<?php
include 'mysqlinit.php';
// Create connection
$conn = mysqli_connect($servername, $username, $password, $dbname);
// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
/*else {
echo "Connected to db <br><br>";
}*/
$sql = "SELECT * FROM `PTBrand` ORDER BY `pt_brand` ASC";
$result = mysqli_query($conn, $sql);
echo "<select name=\"fbrand\" style=\"width: 348px\" >";
echo "<option value=\"\">-- Select a Brand -- </option>";
if (mysqli_num_rows($result) > 0) {
// output data of each row
while($row = mysqli_fetch_assoc($result)) {
if ($brand == $row["pt_id"]) {
echo "<option value=\"" . $row["pt_id"] . "\" selected=selected> " . $row["pt_brand"] . " </option>";
} else {
echo "<option value=\"" . $row["pt_id"] . "\"> " . $row["pt_brand"] . " </option>";
}
}
} else {
echo "<option value=\"xxx\">-- No Brands Defined in DB -- </option>";
}
echo "</select>";
mysqli_close($conn);
?>
</td>
</tr>
<tr>
<td class="title" >Comments:</td>
<td class="inputval">
<textarea name="fcmmt" rows="4" cols="50" maxlength=254 form="add"placeholder="Add your comments here."><?php echo htmlspecialchars($cmmt);?></textarea>
</td>
</tr>
</tbody>
</table>
<br>
<br>
<input type="submit" name="submit" class="btn btn-primary" value="Add New Record" />
<input type="submit" name="reset" class="btn btn-default" value="Reset" >
<input type="button" name="return" onclick="takemehome()" class="btn btn-default" value="Return/Back" />
</form>
<br>
<br>
</div>
</main>
<?php require ('footer.php'); ?>
</body>
</html>
1 個解決方案
解決方案1
0 2019-08-10 08:34:07
我已經弄清楚了，現在正在工作。 同時使用ajax和php獲得我需要的功能。
<script>
function getcodename(str) {
if (str.length == 0) {
document.getElementById("fname").innerHTML = "";
return;
} else {
var xmlhttp = new XMLHttpRequest();
xmlhttp.open("GET", "ajax_get_stock_name.php?code=" + str, true);
xmlhttp.onreadystatechange = function() {
if ((xmlhttp.readyState == 4 && xmlhttp.status == 200)) {
var rstr = xmlhttp.responseText;
rstr = rstr.replace(/\s+/g, ' ').trim();
/**document.getElementById("cname").innerHTML = rstr ;**/
document.getElementById("fname").value = rstr ;
}
}
xmlhttp.send();
}
}
</script>
PHP代碼：
<?php // Create connection //$message = "In funtion codelookup"; //echo "<script type='text/javascript'>alert('$message');</script>"; include 'mysqlinit.php'; // Check connection // get the q parameter from URL $code1 = ""; $name1 = "NOTFOUND"; if (isset($_GET['code'])) { $code1 = $_GET['code']; $sql = "SELECT * FROM `pcomp` where Code = '$code1'"; //$sql1 = 'SELECT * FROM `pcomp` WHERE `Code` = "H413"'; //echo "SQL = $sql"; //echo "code = $code1"; $result = mysqli_query($conn, $sql); //echo "result = $result1"; if (mysqli_num_rows($result) > 0) { // output data of each row while($row = mysqli_fetch_assoc($result)) { $name1 = $row["Name"]; $name1 = trim ( $name1, [ string $character_mask = " \\t\\n\\r\\0\\x0B" ] ) } } else { $name1 = "NOTFOUND"; } mysqli_close($conn); if (empty($name1)){ $name1 = "NOTFOUND"; } } else { $name1 = "NOTFOUND"; } echo $name1; ?>
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