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Prefill checkbox via link and preserve form function

I currently have a form i built that is 3 large check boxes, when selected they toggle the continue button below them, https://staging-homecarepulse.kinsta.cloud/demo-select/ this is the link so you can check it out.
Currently im trying to add functionality to the form that when you click a link from another page, it preselects the checkbox depending on the link selected.
I was able to find a script that allows me to setup a link with a hash ( https://staging-homecarepulse.kinsta.cloud/demo-select/#checkbox1 ) but my issue is that I cannot get the continue button to trigger when the form is accessed this way.
here is my code
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
var hash = location.hash;
if(hash=="#checkbox1"){
$("#checkbox1").prop("checked", !$("#checkbox1").prop("checked") ); // that toggles the checked state
}
});
</script>
<script>
$(document).on("change", ".mod-link", function() {
var arr = []
$(".mod-link:checked").each(function() {
arr.push($(this).val());
})
if (arr.length > 0) {
$('#picture').attr('src', '');
} else {
$('#picture').attr('src', 'https://staging-homecarepulse.kinsta.cloud/wp-content/uploads/2021/06/greyBTN.jpg');
}
var vals = arr.join(",")
var str = "/demo/?demo_request_type=" + vals;
var link = arr.length > 0 ? '<a class="dynabtn" href="'+str+'">Continue</a>': '' ;
$('.link-container').html(link);
});
</script>
anyone have any idea how i can use links like https://staging-homecarepulse.kinsta.cloud/demo-select/#checkbox1 to trigger that checkbox and still have the continue button toggle on?

Instead of trying to toggle the checked property, fire a click event on your checkbox.
$(document).ready(function() {
if (location.hash) {
let $checkbox = $(location.hash);
if ($checkbox.length) $checkbox.click();
}
});
Your Continue button will toggle as well.

JQuery undo append

I've got a table with a button inside a td, once I press the button it adds text to the td. I want to remove this text inside the td once i press the button again. note that this button is used multiple times in the table hence the class attribute.
Which method could I use to get this done?
This is my code:
$(document).on('click', '.releasebutton', function () { // button class="releasebutton"
var label = $(this).text();
if (label == "Add") { // it is "Add" by default
$(this).text("Cancel");
$('.ReleaseTD').append("<br>" + "test"); // td class="ReleaseTD"
}
// the code above this works
else {
$(this).text("Add");
$('.ReleaseTD').remove("<br>" + "test");
// this obviously is wrong but this is where i would like the correct code
};
});

You could create ID for text inside like this:
$(document).on('click', '.releasebutton', function () { // button class="releasebutton"
var label = $(this).text();
if (label == "Add") { // it is "Add" by default
$(this).text("Cancel");
$('.ReleaseTD').append("<span id='textID'><br>" + "test</span>");
}
else {
$(this).text("Add");
$('#textID').remove();
};
});

Please try the following:
$(document).on('click', '.releasebutton', function () { // button class="releasebutton"
var label = $(this).text();
if (label == "Add") { // it is "Add" by default
$(this).text("Cancel");
$('.ReleaseTD').append("<span id='txt_name'><br>" + "test</span>");
}
// the code above this works
else {
$(this).text("Add");
$('#txt_name').remove();
};
});

Two ways:
1) Append your text into a span with a unique ID, and then delete this ID. For example, delete the ID with the largest number. Dumbest way would be to just store the latest ID in a global variable.
var global_last_appended_id = 0;
$(document).on('click', '.releasebutton', function () { // button class="releasebutton"
global_last_appended_id ++;
$('.ReleaseTD').append("<span id='appended-text-" + global_last_appended_id + "'><br>" + "test</span>");
}
// the code above this works
else {
$(this).text("Add");
$('#appended-text-' + global_last_appended_id).remove();
global_last_appended_id--; //go one step back so next time we remove the previous paragraph
};
});
Update: after your edit I've added the ability to undo multiple times. Basically there is unlimited undo.
2) [lame and wrong] Save the previous .html() - the whole HTML code of your element - into a global variable; then restore the previous version of the text from the global variable when necessary.

call different events based on user input style javascript

I have a div which contains an input element to enter some values. These values are added just above the div as a list element upon pressing enter or onFocusOut event. To this point it is fine. But if user types some value and does not press enter and directly clicks on save button, the onFocusOut function for that div should not be called. Instead it should take that typed value and call some save function. Do you have any suggestion on how to detect it?
My code snippet is here
JS:
divInput.onkeypress = function (event){
return someTestFunc();
}
divInput.tabIndex="-1";
$(divInput).focusout(function (e) {
if ($(this).find(e.relatedTarget).length == 0) {
addToList();
}
});

It is not a very delicate solution, but you could use a setTimeout before adding the item to the list and clear the setTimeout on save.button click.
Try this:
var $saveButton = $('#exampleButton')[0],
$divInput = $('#exampleInput')[0],
timedEvent = -1;
$($saveButton).on('click', function(event){
if(timedEvent) {
clearTimeout(timedEvent)
}
alert('not add to list & save');
})
$divInput.tabIndex="-1";
$($divInput).on('focusout', function(e) {
timedEvent = window.setTimeout(function() {
if ($(this).find(e.relatedTarget).length == 0) {
alert('add to list');
}
}, 200);
});
Check this working fiddle

IE click event span not triggered

I'm having this webpage
http://pocolocoadventures.be/reizen/
And it should filter (with isotope.js) the travelboxes on the page.It does in safari, chrome, firefox, opera, .. but in IE, the filter doesn't work. Even worse, JS doesn't react at all at a click event on te span.
This is the piece of js
// Travel Isotope
var container = $('#travel-wrap');
container.isotope({
animationEngine : 'best-available',
itemSelector: '.travel-box ',
animationOptions : {
duration : 200,
queue : false
},
});
$(".filters span").click(function(){
var elfilters = $(this).parents().eq(1);
if( (elfilters.attr("id") == "alleReizen") && elfilters.hasClass("non-active") )
{
$(".label").each(function(){
inActive( $(this) );
});
setActive(elfilters);
}
else{
//set label alleReizen inactive
inActive( $("#alleReizen") );
if( elfilters.hasClass("non-active") ){
setActive(elfilters);
}
else{
inActive(elfilters);
}
}
checkFilter();
var filters=[];
$(".search.filters").children().each(function(){
var filter = $(this).children().children().attr("data-filter");
if( $(this).hasClass("non-active") ){
filters = jQuery.grep(filters, function(value){
return value != filter;
});
}
else{
if(jQuery.inArray(filter,filters) == -1){
filters.push(filter);
}
}
});
filters = filters.join("");
filterItems(filters);
});
function filterItems(filters){
console.log("filter items with filters:" + filters);
container.isotope({
filter : filters,
}, function noResultsCheck(){
var numItems = $('.travel-box:not(.isotope-hidden)').length;
if (numItems == 0) {
$("#no-results").fadeIn();
$("#no-results").css("display", "block");
}
else{
$("#no-results").fadeOut();
$("#no-results").css("display", "none");
}
});
}
function setActive(el){
el.removeClass("non-active");
var span = el.find('i');
span.removeClass("fa-check-circle-o").addClass("fa-ban");
}
function inActive(el){
el.addClass("non-active");
var span = el.find('i');
span.removeClass("fa-ban").addClass("fa-check-circle-o")
}
function checkFilter(){
var filterdivs = $('.filters span').parent().parent();
if( filterdivs.not('.non-active').length == 0 ){
setActive( $("#alleReizen") );
}
var filterLabels = $(".filters .label");
if( filterLabels.not('.non-active').length == 0){
setActive( $("#alleReizen") );
}
}
function noResultsCheck() {
var numItems = $('.item:not(.isotope-hidden)').length;
if (numItems == 0) {
//do something here, like turn on a div, or insert a msg with jQuery's .html() function
alert("There are no results");
}
}
Probably something small and stupid; but I can't find it..
Thanks in advance!

On your website you've build the buttons like this:
<button>
<span>
</span>
</button>
Now the button element is designed to be a button. It differs from the input button. In the latter you'd set the caption using value. In the button element you set it as a text node. The button element can contain elements like a span. The spec isn't very clear about whether or not you should have event handlers on the children of the button element. It's a browser developers interpretation of allowing it or not.
This problem has been posted here before (a few times)
span inside button, is not clickable in ff
Missing click event for <span> inside <button> element on firefox
It seems that Firefox is allowing it, based upon your findings. IE isn't. So to be on the safe side: use the button the way it was intended.
Wrap the button inside a span (not really logical)
Put the click handler on the button.
$(".filters button").click(...);

played around in the console a bit, and this seemed to work well.
$(".filters").on('click', 'span', function(){
// foo here
console.log('foo');
});
Maybe the filters are manipulated by one of your js files after page load?
.on will allow you to select a container which listens on changes that happen inside it, passing the element you want the actual action to work on.
If it's ok for you, I'd suggest to use the <button> element, instead of the <span>.
Let me know if that works for you.

Handling click events for many elements by bubbling

I have a list of controls contained in a parent div called overlay-controls.
There is many list controls that each have their own overlay-controls.
I am using a for loop to add the event listener to each button that contains the class delete.
Before the user can delete the item, they must confirm. I am trying to attach this to every delete button found in overlay-controls.
I got it to work using a for loop but I know there is a better way using bubbling and capturing. I am having trouble targeting only the delete class inside overlay-controls by bubbling up to parent div.
See the live demo here by clicking on each delete button: http://jsfiddle.net/8qqfeoa2/1/
Here is my code using the for loop:
(function() {
function getConfirmation(e){
var retVal = confirm("Are you sure you want to delete this request?");
if( retVal == true ){
return true;
}else{
e.preventDefault();
return false;
}
}
var del = document.querySelectorAll('.delete');
for(var i = 0, len = del.length; i < len; i++){
del[i].addEventListener('click', function(e) {
getConfirmation(e);
}, false);
}
}());

You dont event need the For / .each loop
Jquery takes care of it internally
$('.delete').on('click', function(e){
getConfirmation(e);
});
Provided you are using jQuery and in getConfirmation method you may also get that specific (clicked) element by using e.target which returns the target on which click happened.

Only Javascript solution
As you requested one
var deletebuttons = document.getElementsByClassName('delete');
for(var button in deletebuttons) {
button.onclick = getConfirmation;
}