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I cant seem to add a php function / variable into my javascript. I need it to set options into a dynamic select form I have in javascript.
I tried "" inside the javascript which everyone recommended.
<?php
function options(){
include "connection.php";
$sql="SELECT DISTINCT PartID, PartName FROM parts";
$result = mysqli_query($conn,$sql);
if ($result) {
while ($row=mysqli_fetch_assoc($result)){
echo "<option value='{$row['PartID']}'>{$row['PartName']}</option>";
}}}
?>
<script>
$(function(){
$('p#add_part').click(function(){
counter_part += 1;
$('#container').append(
'<strong>Part No.'+ counter_part + '</strong><br />');
$('#container').append(
'<select><option>Select a Part</option>((((((HERE)))))
</select>');
});
});
</script>
The whole function does not work in relation to the methods I keep trying. When ever I add a '' inside the script to add a variable inside the option, the whole function stops working. However its possible to add a counter variable. Btw I have some other functions above the script etc that was irrelevant.
You can try storing it in an HTML element in PHP, then you can read it from JavaScript and then delete it from JavaScript. You can also set it at the bottom of the page and set the text color the same as the background color so you can't see it. I don't know much about PHP, but I do for JavaScript and HTML, so, sorry but I can only add the JavaScript and HTML.
HTML:
<span style="background-color:white; color:white;" id="phpVariable"></span>
JavaScript:
var element = document.getElementById("phpVariable"); // Get the element
var phpString = element.textContent; // Get a string
var phpInteger = parseInt(element.textContent) // Get an integer
var phpFloat = parseFloat(element.textContent) // Get a float
element.parentNode.removeChild(element); // Delete the element
For the PHP, you just have to append the HTML element above to the bottom of the page. If you're background is a different color, then you can just set both the background color and the text color to the background color of the page. Doing this will make the text invisible by just looking at it until the JavaScript picks it up and deletes the element.
Just echo your JavaScript function with PHP, and you can easily insert function variables with string concat. In example echo 'alert("'.$var.'"); or something like this!
I'm not sure that is what you want, but you can use PHP values of variables in your JS with simple echo to text. I just edited your to work. Declaring options into $options variable and return it in function is giving possibility to write them into JS with echo. You could do it with $options directly, without options() function.
PHP code works only once, then your echo values counted as hardcoded text in html file. Use this only if you need to get value once.
<?php
function options(){
include "connection.php";
$sql="SELECT DISTINCT PartID, PartName FROM parts";
$result = mysqli_query($conn,$sql);
if ($result) {
$options = '';
while ($row=mysqli_fetch_assoc($result)){
$options .= "<option value='".$row['PartID']."'>".$row['PartName']."</option>";
}
}
return $options;
}
?>
<script>
$(function(){
$('p#add_part').click(function(){
counter_part += 1;
$('#container').append(
'<strong>Part No.'+ counter_part + '</strong><br />');
$('#container').append(
"<select><option>Select a Part</option><?php echo options() ?></select>");
});
});
</script>
Related
I have PHP code that looks something like this which works fine on its own.
echo "<script type='text/javascript'>document.getElementById('flightTime3').innerHTML = </script>Dep: ";
However if I want to set the innerHTML of another element like so:
echo "<script type='text/javascript'>document.getElementById('flightDate3').innerHTML = </script>Arr: ";
The browser interperates it as setting the innerHTML of the first element only. So, the element with id flightTime3 shows "Dep: Arr: " and the element with id flightDate3 shows nothing.
How can I break up the javascript within the PHP so that it is recognised as two separate commands?
You are closing <script> tags before assigning a strings to .innerHtml by Javascript. Place assignment before you close the <script> tag.
echo "<script type='text/javascript'>document.getElementById('flightTime3').innerHTML = 'Dep:';</script>";
Currently I have a php-page using include to show an html-page.
What I want to do is use a variable the php-page received when being called and project data into a field of the html-page depending on this variable. The problem is that I can't seem to pass the variable from php to html without using html to call php.
I know that I can simply echo the php-part, but because I can't echo straight into one of the html-page's divs it ends up putting the echo at the beginning or end of the page.
What I want to accomplish is for the html-page to load the php-part into one of the div's the first time the php includes the html-page. Is there any way to do such a thing?
If this isn't possible, then how do I get the javascript in the html-page to use the variable from the php-file? Is the best option really the href?
As requested some of the code:
php:
if (filter_input(INPUT_GET, "event", FILTER_SANITIZE_STRING))
{
include "../Html/EventPage.html"; //target page
$temp = filter_input(INPUT_GET, "event", FILTER_SANITIZE_STRING); //get the variable
include "../PHP/Connector.php"; //include the connection page
$value = callFunction(Connect(), $temp); //call connection page and return value
echo "<div class = 'cant select div in html'>" . $value . "</div>"; //echo value in location
}
html:
<div id = "dynamic">
this should have the php
</div>
I assume you use some code like this to display the page:
include('page.html');
A safer way would be to prevent evaluation in page.html:
echo file_get_contents('page.html', true);
You can then do any string modification you want for the content:
$replacement = 'MY REPLACEMENT';
echo str_replace('<div id="my-div">', '<div id="my-div">' . $replacement, file_get_contents('page.html', true));
I have a problem with javascript in PHP. I want to use Javascript function to change ccs atribute display to block for only those div elements that contain certain text that is in php variable which is taken from column in MySQL table. I don't know if it is actually possible this way but here's the code:
PHP:
$sql="SELECT * FROM Filter1";
$result=$conn->query($sql);
while($row = $result->fetch_assoc()) {
$meno=$row['meno'];
echo '<script type="text/javascript"> filterTovar() </script>';
JavaScript:
function filterTovar()
{
var meno='<?php echo $meno; ?>';
var produkt=document.getElementsByClassName("tovar");
produkt.style.display="none";
for(var i=0;i<produkt.length;i++)
{
produkt[i].style.display="none";
}
for(var i=0;i<produkt.length;i++)
{
if(produkt[i].innerHTML==meno)
{
produkt[i].style.display="block";
}
}
}
I am trying to make some kind of filter that makes only certain divs shows depending on result of table but the code above doesn't work and I'm not sure if it is possible to make work this way.
MySQL table I'm taking data from:
id meno znacka cena op format
425 H81M-S2V GIGABYTE 46.03 DDR3 mATX
426 H110N GIGABYTE 83.05 DDR4 mITX
EDIT: Better explanation of my problem: User uses checkboxes to filter products on my website, in database php creates table with corresponding products. My code above is supposed to take that table and use column "meno" in which is name of product to show only those div that contain string "meno".
EDIT2: I want to ask if it is possible to change or work with elements css via DOMDocument(). If yes it would answer my question.
Yes, it is possible but there is no need to use javascript/jQuery - just use HTML and CSS.
Basically, you have your database result set and you loop through it with a while loop, right?
I guess you are constructing HTML in that while loop.
In each iteration of the loop, test your MySQL column value and add a class to the desired HTML element.
Here is an example:
$out = '<table><tbody>';
while($row = $result->fetch_assoc()) {
$theclass = ($row['something']=='hideme') ? ' hiddenTD' : '';
$out .= '<tr><td class="' .$theclass. '">' .$row['something']. '</td></tr>'
}
$out = '</tbody></table>';
echo $out;
Of course, you would have CSS defined in the document, like:
<style>
.hiddenTD{display:none;}
</style>
This is a terrible example because you can't "hide" a TD, but it's an example.
I think I'm going to have to use Jquery for this.
I have a print button that I only want to show if my array has data in it.
Here's my really simplified version of what I'm trying to accomplish
HTML
<?include 'anotherpage.php'?>
<button class='printButton' name='printButton'>Print</button>
PHP
$data = array();
if($statement == true){
array_push($data, 'some value', 'another value');
}
if (empty($data)){
echo "No trace currently found";
**<<I want to set a hidden class to the button here somehow>>**
}
Any help in the right direction would be greatly appreciated. I'm still trying to grasp the whole JQuery thing.
Why don't you just include the button IF there is $statement == true?
Another way could be to set an jQuery / JavaScript function that hides the button.
Then if there should be no button, print a html part which calls the function.
Something like this:
jQuery
hidePrintButton = function()
{
$('.printbutton').hide();
}
PHP
if (empty($data)){
echo "No trace currently found";
echo '<script>';
echo 'hidePrintButton();';
echo '</script>';
}
What about just putting the button inside the if statement in PHP?
PHP
$data = array();
if($statement == true){
array_push($data, 'some value', 'another value');
echo "<button class='printButton' name='printButton'>Print</button>";
}
if (empty($data)){
echo "No trace currently found";
**<<I want to set a hidden class to the button here somehow>>**
}
HTML
<?include 'anotherpage.php'?>
If the button is allready rendered on the page, and assuming there is only one button with class printButton, using jquery you could do something like this:
if (empty($data)){
echo "No trace currently found";
echo "$('.printButton').hide();";
}
But this is not a good way to do it because you are mixing server behaviour and client behaviour, which will result in code difficult to maintain and debug.
You better rewrite your code to use only php, not printing the button in the first place if it is not needed, or using a class to hide it if it could be needed later.
Using a class to hide the button:
$hideClass = "";
if (empty($data)){
$hideClass = "hideButton";
}
echo "<button class='printButton $hideClass' name='printButton'>Print</button>";
This way, if you later need to show the button with jquery, you could call:
$('.printButton').removeClass('hideButton');
JQuery seems to be blocked
Hello there, I've been confronting this problem for several days, I just can't find a way to get this fixed, or around it.
What I want to do is simple, I want to read out every sub-folder of a big Project folder. Then assign a thumbnail image and a figcapture to this folder. With a simple for loop, php builds this for me. Everything works perfect and quick. The only thing is that the jquery won't respond. Even though I have created various menus with this technique. As you can see in my code, in the "script" tags, I have the jquery code which doesn't seem to work.
I don't know wheter php puts in a space somewhere or I just looked too long at this code for seing the error.
I appreciate any help.
<?php
/*Because of the "ease of use" aspect of this site, I prefered to write it completely in PHP,
advantage of that:
Images are loaded directly out of the folder, so I can just drag and drop something onto the server without having to write aditional code.
As you see, it can save a lot of time.*/
echo "<h1>Referenzen</h1><br>";
$projects = scandir('../src/sub/credentials'); //The credentials directory is being scanned and converted into an array.
$projectsSize = count($projects); //$size is being created. It counts the number of objects in the array which has been created above.
$projectsCaptions = file('../src/sub/captionsOfCredentials.txt'); //Edit the name of the figcaption in the "captionsOfCredentials.txt".
for($i = 2; $i < $projectsSize; $i++){ /*Simple "for" loop, that creates $i with the size of two, because PHP is 0-index based and has the "dot" and the "dotdot" folder. The loop stops at the end of the array($size).*/
echo '<a href="index.php#PRJ'.trim($projectsCaptions[$i]).'" class="ID'.trim($projectsCaptions[$i]).'">
<div class="projectFolder">
<img src="src/sub/credentialsThumb/project_00'.$i.'.jpg" width="100%" />
<figcaption>'
.$projectsCaptions[$i].
'</figcaption>
</div>
</a>';
/*Project folder level starts here.*/
$images = scandir('../src/sub/credentials/project_00'.$i);
$imagesSize = count($images);
for($k = 3; $k < $imagesSize; $k++){
$tempID = ('ID'.trim($projectsCaptions[$i]).'.php'); //$tempID is the entire file name including the .php part.
$handle = fopen($tempID, "a") or die ('Unable to open '.$tempID.' , please contact admin A.S.A.P..');
$imagesCode = 'test';
fwrite($handle, $imagesCode);
}
//end second for-loop
echo "
<script>
$(document).ready(function () {
$('#ID".$projectsCaptions[$i]."').click(function () {
$('#mainContent').load('de-DE/".$tempID."');
});
});
</script>";
}
//end first for-loop
?>
You're selecting an element by id when you need to use class. Change the JS block to this:
$(document).ready(function () {
// Note ".ID" not "#ID"
$('.ID".$projectsCaptions[$i]."').click(function () {
$('#mainContent').load('de-DE/".$tempID."');
});
});
UPDATE
It seems like you've also got an illegal character in $projectsCaptions[$i]. It's most likely a newline character. Try wrapping the above reference above in trim():
$('.ID" . trim($projectsCaptions[$i]) . "').click(function () {