Develop Reference

How To use PHP variable in jQuery (in Wordpress plugin)

This is wordpress plugin code The following code works, but no text comes into the modal window. Error is this enter image description here
<?php
$phpvariabletext = get_post_meta( $post_id, '_billing_satis_sozlesme', true );
// $phpvariabletext large text along with html codes
?>
<a class="classa" id="view" onclick="openmodal()"> Show Contract </a>
<script type="text/javascript">
var content = '<?php echo $phpvariabletext; ?>';
var newmodal = new tingle.modal();
function openmodal() {
newmodal.open();
newmodal.setContent(content);
}
</script>

You can use PHP variable in JQuery/Javascript easily check below steps
1) Stored PHP variable value in HTML input tag as type hidden
<input type="hidden" value="<?php echo $phpvariabletext;?>" id="phpvariable">
2) After assign variable value in HTML input tag. You can get value in JQuery/Javascript.
<script type="text/javascript">
var content = $('#phpvariable').val();
var newmodal = new tingle.modal();
function openmodal() {
newmodal.open();
newmodal.setContent(content);
}
</script>

Creating extra DOM elements solely to transport a value is needless extra markup.
I always pass php data to javascript as json_encode() output (without manually quoting) because it will automatically double-quote your string and escape any of the double-quotes in the actual data.
<a class="classa" id="view" onclick="openmodal()"> Show Contract </a>
<script type="text/javascript">
let newmodal = new tingle.modal();
function openmodal() {
newmodal.open();
newmodal.setContent(<?= json_encode(get_post_meta($post_id, '_billing_satis_sozlesme', true)); ?>);
}
</script>
The above technique outputs the php value using php "short tags".
P.s. you could also consider removing the inline js function call and use an event listener in your js to keep all of the behaviors/events in one place.

How to create dynamic Uikit modal [Joomla]

I want to have one modal, only with content changing. In modal im showing articles via iframe. The problem is that my solution is a bit laggy, and you can see previous article before changing. Im using JS:
function switchTitleMod1(title,id) {
document.getElementById("titleMod1").innerHTML = title;
document.getElementById("iframe").src = "index.php?option=com_content&view=article&id="+id+"&tmpl=component";
}
The modal code:
<div id="informacje" class="uk-modal">
<div class="uk-modal-dialog" >
<a onclick="resetTitleMod1();" class="uk-modal-close uk-close"></a>
<div id="titleMod1" class="uk-modal-header uk-text-bold uk-text-large uk-text-center"><h2>Zapisz si? na kurs</h2></div>
<iframe id="iframe"style="width: 100%;height:650px" scrolling="auto" frameborder="0" src="index.php?option=com_content&view=article&id="34"&tmpl=component" hspace="0">
</iframe>
<div class="uk-modal-caption">Copyright by MRP-KODER</div>
This is how i call the modal:
<a onclick="switchTitleMod1('Szkolenia HACCP','42');" href="#informacje" data-uk-modal="{target:'#informacje',bgclose:false,center:true}" class="uk-button uk-button-medium uk-button-primary"> <i class="uk-icon-info uk-icon-justify"></i>Informacje</a>
My question is: How to create modal via Jquery and only adding deleting DOM. Link to the page: link
Via clicking "Informacje" You will see what the problem is.

I found solution by myself :) I didint use DOM model, but it works fine, for using diffrent modals only by changing button id.
var $jq = jQuery.noConflict();
$jq(document).on('click', '#info', open_info_modal).on('click', '#zapytaj', open_ask_modal);
function open_info_modal(e)
{
var articleId = $jq(e.target).data('id');
var articleTitle = $jq(e.target).data('title');
$jq('#modal').on({
'uk.modal.show':function(){
$jq('#title', $jq(this)).html('<h2>'+articleTitle+'</h2>');
$jq('span', $jq(this)).html('<iframe id="iframe"style="width: 100%;height:650px" scrolling="auto" frameborder="0" src="index.php?option=com_content&view=article&id='+articleId+'&tmpl=component" hspace="0">');
},
'uk.modal.hide':function(){
}
}).trigger('uk.modal.show');
}
function open_ask_modal(e)
{
var articleTitle = $jq(e.target).data('title');
$jq('#modal').on({
'uk.modal.show':function(){
$jq('#title', $jq(this)).html('<h2>'+articleTitle+'</h2>');
$jq('span', $jq(this)).html('<iframe id="iframe2"style="width: 100%;height:600px" scrolling="auto" frameborder="0" src="index.php?option=com_chronoforms5&chronoform=zapytaj-szkolenie&tmpl=component&name1='+articleTitle+'" hspace="0">');
},
enter code here'uk.modal.hide':function(){
}
}).trigger('uk.modal.show');
}

Pass variables from Javascript to PHP - Popup/Modal Window

<html>
<head>
<script type="text/javascript">
function showdivv(el, idclicked) {
var iddd = idclicked;
var display = document.getElementById(el).style.display;
if(display == "none")
document.getElementById(el).style.display = 'block';
else
document.getElementById(el).style.display = 'none';
}
</script>
<?php $showw = "<script>document.write(iddd)</script>"; ?>
</head>
<body>
<div id="myDiv" style="display: none;">ID Selected: <?php echo $showw; ?></div>
<?php $variable = 4; ?>
<button type="button" onclick="showdivv('myDiv', '<?php echo $variable; ?>')">Show / Hide</button>
</body>
I'm trying to make a way when a person presses the button pass the variable, in this case ID, to JavaScript and then show the hidden div in PHP. It does not work, can someone help me? THX

If you're okay with the page reloading, you can simply do
window.location.href('php_script_that_needs_your_input.php?id=input_id_from_js');
If not, I absolutely recommend using JQuery as it makes Ajax queries a breeze.
Inside the <head> tags:
<script src='http://code.jquery.com/jquery-2.2.0.min.js'></script>
Upload the script to your own server for production purposes, obviously.
in the <body>, where you want the results from the PHP script to appear (skip this if you don't want output from PHP):
<div id="phpResult"><!--content to be set by ajax--></div>
and put this JS directly below this <div>:
function ajax_on_button_press(resultDiv, id) {
var phpUrl = "php_script.php?id="+id+"&other_variable=cheese&more_info=rats";
$(resultDiv).load(phpUrl);
}
I have used example values here, but you can easily use variables from JavaScript like this:
var other_variable=$('#otherVariableInput').val(); //gets input from a textbox with the html id otherVariableInput
var phpUrl = "php_script.php?id="+id+"&other_variable="+other_variable+"&more_info=rats";
To start the process, you need a button that runs this script. Change your button markup to
<button type="button" onclick="ajax_on_button_press('#phpResult', '<?php echo $variable; ?>')">Show / Hide</button>
If I have understood you correctly, that should solve your problem.

How to replace the special characters in js

i want add this to my html,but it didn't work .
var html = '<div id="youkuplayer"></div>'
+'<script type="text/javascript" src="http://player.youku.com/jsapi">'
+'player = new YKU.Player("youkuplayer",{'
+'client_id: "81dab93633c39ff0",'
+'vid: "XNjQ4Nzk5MTA0_ev_1",'
+'width: "240",'
+'height: "200",'
+'autoplay: false,'
+'show_related: false'
+'});'
+'</script>';
$("#added_video").css("display","block").append(html);
but if i use a static html include this,it works.

Your problem is the SCRIPT tag, which jQuery chokes on.
See this answer for some possible solutions: How to dynamically insert a <script> tag via jQuery after page load?

Some error in your code,you need add '</script><script>' in your code like this:
var html = '<div id="youkuplayer"></div>'
+'<script type="text/javascript" src="http://player.youku.com/jsapi"></script><script>'
+'player = new YKU.Player("youkuplayer",{'
+'client_id: "81dab93633c39ff0",'
+'vid: "XNjQ4Nzk5MTA0_ev_1",'
+'width: "240",'
+'height: "200",'
+'autoplay: false,'
+'show_related: false'
+'});'
+'</script>';

Solution for changing' img id' with 'document.getElementById' when selecting from auto generated list

Solution for changing image id when selecting from auto generated list
This code:
<?php foreach(glob('pano/*.png') as $filename):?>
<li><?php $path_parts = pathinfo ($filename); echo $path_parts['filename'], "\n";?> </li>
<?php endforeach; unset( $filename);?>
Generates a screen with a button for each of the files. The function chgpano:
function chgpano()
{
ima = document.getElementById("tonto");
init();
}
Changes the img Id assigned to variable "ima". The contents of "tonto" need to reflect the image selected.
The following cannot work, but does show the intent:
function chgpano()
{
img id="tonto" src= ('pano/'+ variable with text from button selected)
ima = document.getElementById("tonto");
init();
}
I saw a similar question but it was rejected as being unclear

Try this:
// PHP can look like
$liA = '';
foreach(glob('pano/*.png') as $f){
$path_parts = pathinfo($f);
$liA .= "<li><a href='javascript:chgpano($f)'>{$path_parts['filename']}></a></li>";
}
echo $liA;
// JavaScript can look like + some goodies
var doc = document; // get in the habit of declaring variables
function E(e){
return doc.getElementById(e);
}
var tonto = E('tonto');
function chgpano(f){
tonto.src = f;
}
I would use external JavaScript, putting the <script> tag at the bottom of the body. Alternatively, you would put the <script> tag in the <head> and run onload.

as mentioned in the comment the purpose of id in html is for one single element..
so i would use class or the new data-TAG.
to reuse the php script also for other scripts/sites i would scan the folder and convert everything to json.(simple array containing all the paths of the png's)
here is a example using javascript 1.7 (modern html5 browsers)
to handle multiple elements with one handler.
scanForPNGs.php
echo json_decode(glob('pano/*.png'));
index.html
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style>
img{width:100px;}
img.IMA{opacity:0.3;}
</style>
<script>
var box;
function ajax(a,b,c){c=new XMLHttpRequest;c.open('GET',a);c.onload=b;c.send()};
function display(){
box.innerHTML='<img src="'+JSON.parse(this.response).join('"><img src="')+'">';
}
function whatever(e){
e.target.classList.toggle('IMA');// activate & deactivate
//or
//e.target.dataset['IMA']=e.target.dataset['IMA']=='ON'?'OFF':'ON';
}
window.onload=function(){
box=document.getElementsByTagName('div')[0];
box.addEventListener('click',whatever,false);
ajax('scanForPNGs.php',display);
}
</script>
</head>
<body>
<div></div>
</body>
</html>
inside the whatever function you can add whatever proprieties or functions to the element that you click.
in my case i just change the opacity.
the trigger is the image itself.
i did not test this code...to be sure test it with chrome.
example
http://jsfiddle.net/8jeDS/1/

Thanks Guys & Gals. This fixed it:
<?php
foreach(glob('pano/*.png') as $filename):$path_parts = pathinfo ($filename); $id_front = $path_parts['filename'];?>
<li> <a onclick = "javascript:chgpano('<?php echo $id_front ?>')"><?php echo $id_front, "\n";?></a><img id= <?php echo $id_front ?> src= <?php echo$filename ?> style="display:none"></li>
<?php endforeach; unset( $filename);?>
As you can see I put the same variable being used to assign the image id into the function parameter.
Now the variable ima contains the img id
function chgpano(blah)
{
ima = document.getElementById(blah);
init();
}
I had to move the variable difinition out side the div otherwise the function parameter was getting filled before the variable was defined.