Develop Reference

jquery not find elements in button area

I have images list and need to select image for album cover.
HTML:
<button type="button" id="imageCover1" class="btn btn-sm btn-success btn-image-cover" data-id="1">
<i class="far fa-circle"></i> cover
</button>
<input type="hidden" name="is_cover[]" id="imageCover1" class="image-cover" value="">
<button type="button" id="imageCover2" class="btn btn-sm btn-success btn-image-cover" data-id="2">
<i class="far fa-circle"></i> cover
</button>
<input type="hidden" name="is_cover[]" id="imageCover2" class="image-cover" value="">
JS:
$(document).on('click', '.btn-image-cover', function () {
var item_id = $(this).attr('data-id');
$('.image-cover').val('');
$('#imageCover' + item_id).val('1');
$('#imageCover' + item_id).find('i').addClass('far fa-check-circle');
});
In action worked and change input value true But when i need to find i and change/add class jquery not find i. how to fix this problem?

It actually works.
The problem is that font awesome only renders one icon class. Change the addClass function to toggleClass like this:
$(document).on('click', '.btn-image-cover', function () {
var item_id = $(this).attr('data-id');
$('.image-cover').val('');
$('#imageData' + item_id).val('1');
$('.btn-image-cover').not(this).find('i').removeClass('fa-check-circle').addClass('fa-circle');
$(this).find('i').toggleClass('fa-circle fa-check-circle');
});
JSFiddle link
The toggleClass will remove the "fa-circle" class when it is present and add the "fa-check-circle" class if it is not present, and vice-versa.
As noted by #Teemu, you also have same ids with your (button + input:hidden) pairs. I've changed the id of the input:hidden to start with "imageData" instead.

Select a button by its value and click on it

How can I select a button based on its value and click on it (in Javascript)?
I already found it in JQuery:
$('input [type = button] [value = my task]');
My HTML Code for the Button is :
<button type="submit" value="My Task" id="button5b9f66b97cf47" class="green ">
<div class="button-container addHoverClick">
<div class="button-background">
<div class="buttonStart">
<div class="buttonEnd">
<div class="buttonMiddle"></div>
</div>
</div>
</div>
<div class="button-content">Lancer le pillage</div>
</div>
<script type="text/javascript" id="button5b9f66b97cf47_script">
jQuery(function() {
jQuery('button#button5b9f66b97cf47').click(function () {
jQuery(window).trigger('buttonClicked', [this, {"type":"submit","value":"My Task","name":"","id":"button5b9f66b97cf47","class":"green ","title":"","confirm":"","onclick":""}]);
});
});
</script>
What is the equivalent in JS and how may i click on it
(probably like this: buttonSelected.click(); ) .
And how do i run the javascript of the button clicked ?

Use querySelector to select it. Then click()
Your HTML has a button and not an input element so I changed the selector to match the HTML.
let button = document.querySelector('button[value="my task"]');
button.click();
<button type="submit" value="my task" id="button5b9f54e9ec4ad" class="green " onclick="alert('clicked')">
<div class="button-container addHoverClick">
<div class="button-background">
<div class="buttonStart">
<div class="buttonEnd">
<div class="buttonMiddle"></div>
</div>
</div>
</div>
<div class="button-content">Launch</div>
</div>
</button>
Otherwise, use this selector:
document.querySelector('input[type="button"][value="my task"]')
Note that if you have multiple buttons with the same value you'll need to use querySelectorAll and you'll get a list of all the buttons.
Then you can loop over them and click() them all.
Edit - new snippet after question edit
jQuery(function() {
jQuery('button#button5b9f66b97cf47').click(function() {alert('success')});
document.querySelector('button[value="My Task"]').click();
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button type="submit" value="My Task" id="button5b9f66b97cf47" class="green ">
<div class="button-container addHoverClick">
<div class="button-background">
<div class="buttonStart">
<div class="buttonEnd">
<div class="buttonMiddle"></div>
</div>
</div>
</div>
<div class="button-content">Lancer le pillage</div>
</div>

you can try:
var elements = document.querySelectorAll("input[type = button][value=something]");
note that querySelectorAll returns array so to get the element you should use indexing to index the first element of the returned array and then to click:
elements[0].click()
and to add a event listener u can do:
elements[0].addEventListener('click', function(event){
event.preventDefault()
//do anything after button is clicked
})
and don't forget to add onclick attribute to your button element in html to call the equivalent function in your javascript code with event object

I am not recommended this way because of excess your coding but as you mentioned, below are the equivalent way.
$(document).ready(function() {
var selectedbuttonValue = "2"; //change value here to find that button
var buttonList = document.getElementsByClassName("btn")
for (i = 0; i < buttonList.length; i++) {
var currentButtonValue = buttonList[i];
if (selectedbuttonValue == currentButtonValue.value) {
currentButtonValue.click();
}
}
});
function callMe(valuee) {
alert(valuee);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.2.3/jquery.min.js"></script>
<input type="button" class="btn" value="1" onclick="callMe(1)" />
<input type="button" class="btn" value="2" onclick="callMe(2)" />
<input type="button" class="btn" value="3" onclick="callMe(3)" />

Using JavaScripts querySelector in similiar manner works in this case
document.querySelector('input[type="button"][value="my task" i]')
EDIT
You might save your selection in variable and attach eventListener to it. This would work as you desire.
Notice event.preventDefault() -function, if this would be part of form it would example prevent default from send action and you should trigger sending form manually. event-variable itselfs contains object about your click-event
var button = document.querySelector('input[type="button"][value="my task" i]')
button.addEventListener('click', function(event){
event.preventDefault() // Example if you want to prevent button default behaviour
// RUN YOUR CODE =>
console.log(123)
})

How to change html inside a span

I want to change the content of a span in my form
HTML:
<form action="javascript:submit()" id="form" class="panel_frame">
<label>Origin:</label>
<div class="input-group" id="input-group">
<input type="text" id="origin" name="origin" class="form-control">
<span class="input-group-btn">
<button id="btn-default" class="btn btn-default" type="button">
<span class="glyphicon glyphicon-pushpin" aria-hidden="true"></span>
</button>
</span>
</div>
What I want change is che content of <span class="input-group-btn"> with
<button id="btn-default" class="btn btn-default" type="button">
<span class="glyphicon glyphicon-remove" aria-hidden="true"></span>
</button>
So what change is: the icon pushpin to remove and the action useCurrentPosition to clearPosition.
I' using jquery and despite I've read other answer about similar question on Stack like: How can I change the text inside my <span> with jQuery? and how to set a value for a span using JQuery I haven't solved the issue.
I tried:
$("#input-group span").html('
<button id="btn-default" class="btn btn-default" type="button" onclick="br_bus.useCurrentPosition()">
<span class="glyphicon glyphicon-pushpin" aria-hidden="true"></span>
</button>
');
,giving an id to the span and also modify the full div, but none solved my problem.
What am I missing?

Here's a way to overcome the problem of changing the onclick attribute, which is bad practice, without storing a Global var, and using jQuery delegation (learn to use it, it's really good):
$(document).on('click','.btn', positionChange); // Give that button an id on his own and replace '.btn' with '#newId'
// Not using an anonymous function makes it easire to Debug
function positionChange(){
var $btn = $(this), // Caching jQuery elements is good practice
$span = $btn.find('span'), // Just caching
pushpinApplied = $span.hasClass('glyphicon-pushpin'); // Check which icon is applied
( pushpinApplied ) ? useCurrentPosition() : clearPosition();
$span.toggleClass( 'glyphicon-pushpin glyphicon-remove' );
}

Rather than changing the function called in the onclick attribute I suggest having a flag in one function to define the logic it should follow.
For example:
function positionChange(this){
var $this = $(this);
if(!$this.data("currentpositionused")){
//useCurrentPosition() code here
$this.data("currentpositionused", true);
}
else {
//clearPosition() code here
$this.data("currentpositionused", false);
}
Then change your HTML to:
<button class="btn btn-default" type="button" onclick="positionChange(this)">

If you want to change only the onclick attribute of the button inside the particular span you can use the following in your script.,
$(document).ready(function(){
$("span.input-group-btn button").attr("onclick","clearPosition()");
});
EDIT
$(document).ready(function(){
$("span.input-group-btn button").attr("onclick","clearPosition()");
$("span.input-group-btn button span").attr("class","Your_class");
});
And also learn about how to change/add/remove attribute values....

Try this:
$("span.input-group-btn").html('<button class="btn btn-default" type="button" onclick="clearPosition()">
<span class="glyphicon glyphicon-pushpin" aria-hidden="true"></span>
</button>');

Is it like This ?
how to change onclick event with jquery?
$("#id").attr("onclick","new_function_name()");
jquery change class name
$("#td_id").attr('class', 'newClass');
If you want to add a class, use .addclass() instead, like this:
$("#td_id").addClass('newClass');

PHP & Jquery Refresh id with external file

I'm trying to refresh one ID of my page within the click of a button.
I've tried several ways but none of them work. Although I've created the button to refresh it, it keep the submission of the page (triggering the validation event). So, each time I click that button, he tries to submit the form, validation the inputs instead refresh that div.
Here's my code right now:
function refreshCaptcha() {
$("#captcha_code").attr('src','./inc/captcha.php');
}
<div class="form-group">
<div class="col-xs-4">
<button class="btn btn-sm btn-warning" id="refreshcap" name="refreshcap" onclick="refreshCaptcha();">
<i class="fa fa-refresh push-5-r"></i>
<img id="captcha_code" src="inc/captcha.php" />
</button>
</div>
<div class="col-xs-8">
<div class="form-material floating">
<input class="form-control" type="text" id="cap" name="cap">
<label for="cap">Captcha</label>
</div>
</div>
</div>
Can someone help me trying to get what's wrong?
Thanks.

Assuming that your button is inside the form,
add type in your button
which will stop button from submitting your form
<button type="button" class="btn btn-sm btn-warning" id="refreshcap" name="refreshcap" onclick="refreshCaptcha();">
<i class="fa fa-refresh push-5-r"></i>
<img id="captcha_code" src="inc/captcha.php" />
</button>
other than that you can use javascript return false; in your function end
with js
<script>
$(document).ready(function() {
$("#refreshcap").on("click",function(event){
event.preventDefault();
$("#captcha_code").attr('src','./inc/captcha.php');
});
});
</script>
with this you wont need to call on click event this will do it for you, no matter type is button or submit

I think your JS function should return false; in order to not submit the form.
<script>
function refreshCaptcha() {
$("#captcha_code").attr('src','./inc/captcha.php');
return false;
}
</script>

Bootstrap Popover with textarea resetting text value

I have an issue where hiding a bootstrap popover just resets the text content of my textarea within the popover. There are many of these in my page and they are created dynamically in a loop (with int i being the counter). Here is my html:
<button class="btn btn-sm" data-toggle="popover" data-container="body" data-title="FOR EVALUATOR'S ATTENTION" type="button" data-html="true" #*id="commentPopOver-#i"*# #*onclick="getAttention(#i)"*#>
<span class="glyphicon glyphicon-pencil"></span>
</button>
<div class="popoverContent" style="display: none !important">
<div class="form-group">
<input name="values[#i].AttentionComment" id="comment-#i" hidden />
<textarea class="form-control" onchange="updateText(#i)" id="commentText-#i" rows="3">someText</textarea>
</div>
</div>
and my JS:
$(function () {
$("[data-toggle=popover]").popover({
html: true,
content: function () {
return $('.popoverContent').html();
}
});
})
Now I understand that it's just recreating the popover with it's default text on load, but it should at least be keeping the changes and the value of the textarea after it is closed/hidden. I wrote this JS to try and make it populate a separate hidden input to contain the value even after reset but it didn't work:
function updateText(id) {
var newtext = $('#commentText-' + id).val();
$('#comment-' + id).val(newtext);
}
Any ideas?

When you use content: function () {return $('.popoverContent').html();} the set the content of your tooltips, the tooltips content a copy of the HTML code return by $('.popoverContent').html(); The textarea is also a copy and not reference to the original textarea in your DOM.
When a tooltips opens the plugin inserts its HTML (including the copy mentioned above) in the DOM with a random unique ID. The plugin also insert a aria-describedby attribute to the elements that trigger the tooltip (the button in your case). The aria-describedby holds the same unique ID set for the tooltip.
Now you can use the 'hide.bs.popover` event. When the tooltips close you should copy the content of the textarea inside your tooltip to the (hidden) textarea in your DOM
Example
HTML:
<button type="button" id="po1" class="btn btn-default" data-container="body" data-toggle="popover" data-placement="right" data-html="true">
Popover on right
</button>
<div class="popoverContent" style="display: none !important">
<div class="form-group">
<textarea class="form-control" rows="3">someText 1</textarea>
</div>
</div>
<br>
<button type="button" id="po2" class="btn btn-default" data-container="body" data-toggle="popover" data-placement="right" data-html="true">
Popover on right
</button>
<div class="popoverContent" style="display: none !important">
<div class="form-group">
<textarea class="form-control" rows="3">someText 2</textarea>
</div>
</div>
javascript:
$("[data-toggle=popover]").each(function( index ) {
var that = $(this);
$(this).popover({
html: true,
content: function () {
return $('#' + $(this).attr('id') + ' + .popoverContent').html();
}
});
});
$('[data-toggle=popover]').on('hide.bs.popover', function () {
$('#' + $(this).attr('id') + ' + .popoverContent textarea').html( $('#' + $(this).attr('aria-describedby') + ' .popover-content textarea').val());
});
Demo: http://www.bootply.com/DvOYV12bHg