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jQuery remove duplicate but keep last occurance

SO is full of these questions, I know, but after going through 20+ pages and numerous google searches I end up asking because I can't find the answer.
I want to filter through data attributes and keep the last occurrence. So for instance with this code:
<div data-id="001">Hello</div>
<div data-id="001">World</div>
<div data-id="002">Keep</div>
<div data-id="002">Only</div>
<div data-id="002">Unique</div>
<div data-id="003">Last</div>
<div data-id="003">Word</div>
<div data-id="004">Please</div>
<br><br>
<p>Result should be: World Unique Word Please</p>
I tried numerous ideas from the SO pages and google searches but I have no luck in keeping the last items. First items though work perfectly with this code.
var found = {};
$('[data-id]').each(function(){
var $this = $(this);
if(found[$this.data('id')]){
$this.remove();
}
else{
found[$this.data('id')] = true;
}
});
Here is a fiddle, hopefully that makes things easier http://jsfiddle.net/hx9Lzqf6/

We can find the last index with same id,store them into an array,then call $.each() again to remove elements with index not in the array
let result = {}
$('[data-id]').each(function(i,e){
let id = $(e).attr("data-id")
result[id] = i
});
result = Object.values(result)
$('[data-id]').each(function(i,e){
let id = $(e).attr("data-id")
if(!result.includes(i)){
$(e).remove()
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div data-id="001">Hello</div>
<div data-id="001">World</div>
<div data-id="002">Keep</div>
<div data-id="002">Only</div>
<div data-id="002">Unique</div>
<div data-id="003">Last</div>
<div data-id="003">Word</div>
<div data-id="004">Please</div>
<br><br>
<p>Result should be: World Unique Word Please</p>

How do I use For Loop in JavaScript to show the list?

I am a beginner in JavaScript and I can't figure out the following problem: I am trying to create a simple JavaScript Movie List. I have 10 lists on the Movie List. I tried to show all of the lists with for loop, but it doesn't work.
Here's the code:
function renderModal() {
for (let i = 0; i < listMovies.length; i++) {
let movieData = listMovies[i];
document.getElementById("poster").src = movieData.img;
document.getElementById("title").innerHTML = movieData.name;
document.getElementById("genre").innerHTML = movieData.genre;
document.getElementById("rating-num").innerHTML = "Rating: "+ movieData.rating + "/10";
document.getElementById("movie-desc").innerHTML = movieData.desc;
document.getElementById("imdb-page").href = movieData.link;
return movieData;
}
}
What do I have to do?
Help me to fix it!.

You can use template tag for list and render it into target element.I am showing an example.
Movie list
<div id="movieList"></div>
template for list
<template id="movieListTemplate">
<div class="movie">
<img src="" class="poster" alt="">
<div class="title"></div>
<div class="genre"></div>
<div class="rating-num"></div>
<div class="movie-desc"></div>
<div class="imdb-page"></div>
</div>
</template>
Javascript code:
if (listMovies.length > 0) {
const movileListTemplate = document.getElementById('movieListTemplate')
const movieRenederElement = document.getElementById('movieList')
for(const movie of listMovies) {
const movieEl = document.importNode(movileListTemplate.content, true)
movieEl.querySelector('.poster').src = movie.img
movieEl.querySelector('.title').textContent = movie.name
//use all queryselector like above
}
}

Your return movieData; will stop the loop dead. Not that running it more than once will change anything since you change the same elements over and over. IDs must be unique.
Here is a useful way to render an array
document.getElementById("container").innerHTML = listMovies.map(movieData => `<img src="${movieData.img}" />
<h3>${movieData.name}</h3>
<p>${movieData.genre}</p>
<p>Rating: ${movieData.rating}/10</p>
<p>${movieData.desc}
IMDB
</p>`).join("<hr/>");

With return movieData, the for loop will ends in advance.You should put it outside the for loop.

Multiple Rotating Title Script

I have a HTML/CSS/JS script that is allowing me to rotate text for a certain part of it. I'm just having the problem of making it work for multiple sections as the script targets a span[data-up] & span[data-show].
Any help appreciated, code shown below.
<section class="rotating-text-section">
<h2>
We educate by
<div class="wrapper">
<span data-up>teaching.</span>
<span data-show>showing.</span>
<span>doing.</span>
<span>repeating.</span>
</div>
</h2>
</section>
setInterval(() => {
const up = document.querySelector('span[data-up]');
const show = document.querySelector('span[data-show]');
const down = show.nextElementSibling || document.querySelector('span:first-child');
up.removeAttribute('data-up');
show.removeAttribute('data-show');
show.setAttribute('data-up', '');
down.setAttribute('data-show', '');
}, 2000);

I just changed the class names of each span element and targeted them by this in the JavaScript script.
My second snippet of HTML was:
<div class="wrapper-two">
<span class="second-span" data-up>technology.</span>
<span class="second-span" data-show>experience.</span>
<span class="second-span">listening.</span>
<span class="second-span">experimenting.</span>
</div>
My second JS script is as follows:
setInterval(() => {
const up = document.querySelector('.second-span[data-up]');
const show = document.querySelector('.second-span[data-show]');
const down = show.nextElementSibling ||
document.querySelector('.second-span:first-child');
up.removeAttribute('data-up');
show.removeAttribute('data-show');
show.setAttribute('data-up', '');
down.setAttribute('data-show', '');
}, 1000);

Labelling multiple elements using loops

I am currently trying to loop through multiple input boxes using loops but I don't know how to go about doing it.
My JS code:
function tagger() {
var t;
for (t = 0; t < 5; t++) {
document.getElementsByClassName("pl")[0].getElementsByTagName("input")
}
};
return tagger();
HTML:
<h1 class="pizza">Pineapple</h1>
<body class="maco">
<div class="keys">
<span class="press" onclick="car()"><i class="fas fa-fingerprint"></i><h2>Log In</h2></span>
<span class="type" id="heyu"><input class="entry" placeholder="Password"></span>
</div>
</body>
</html>
Thanks in advance for any help rendered!

You must to add the t variable as index of (getElementsByTagName)
document.getElementsByClassName("pl")[0].getElementsByTagName("input")[t];
or you can use forEach Method is the best way for looping trough arrays
function tragger () {
var _Element = Array.from(document.querySelector("pl input"));
_Element.forEach(function (ele) {
//do some code for each input
ele.value = 'etc';
});
}
tragger();

How to use ClassName add entries to a DIV

HTML source:
<span class="specLink">
<specialty><a title="Plastic Surgery" href="link2.aspx">Plastic Surgery</a></specialty>
</span>
<br />
<span class="specLink">
<specialty2><a title="Hand Surgery" href="link3.aspx">Hand Surgery</a></specialty2>
</span>
How can I create a JQuery script which runs during page load to displays the same list taking from the HTML Source listed above?
E.g.:
<div class="justPad">
<a title="Plastic Surgery" href="link2.aspx" class="defaultLinks">Plastic Surgery</a>
</div>
<div class="justPad">
<a title="Hand Surgery" href="link3.aspx" class="defaultLinks">Hand Surgery</a>
</div>
How I would like it to be:
var k = "";
$(".specLink").each(function() {
var aLink = $(".specLink").replace(<%-- Remove the <specialty#></specialty#> tags and only keep the anchor link --%>);
k += '<div class="justPad">'; //.. as many entries that shows up
k += aLink; //.. as many entries that shows up
k += '</div>'; //.. as many entries that shows up
});
//Once I have added
$(".addSpecialties").html(k);
Blank HTML:
<div class="serviceHolder brClear addSpecialties">
//add inside here from the JQuery above
</div>

Something like:
var specialties = $(".specLink a").map(function() {
return $('<div class="justPad">').append( $(this).clone() )[0];
}).toArray();
$(".addSpecialties").empty().append(specialties);