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JavaScript Sticky

hello everyone,

i have written a page with a video sync on scrolling but i'd like to get my sections sticky until the next one

  • i followed this tutorial : https://www.youtube.com/watch?v=HiegEfkenXA and used his sticky function but it doesn't work and I don't understand why...
  • And then do you know how I can stop that for my next (big) section ? where its written in comment section 2 - previ in the hilt part, I'd like to go on another style and background but I don't really know how to indicate that the video need to stop display when meeting this (big) section 2 - previous.
  • I used also the selector section in my script (in the html part), can it be a problem if I need to do other sections on the page that will not be linked to this ? (I supposed that I can use class...)


<!DOCTYPE html>
<html lang="fr">
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="/pages/Offres.css">

    <link href="https://fonts.googleapis.com/icon?family=Material+Icons"
    <script src="https://kit.fontawesome.com/811bffdae6.js" crossorigin="anonymous"></script>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Poppins&display=swap" rel="stylesheet">
  <!-- Section 1 - étude de marché -->

    <section class="container">
      <div class="content">
        <h1>L'étude de marché</h1>
        <h2>Pourquoi faire une étude de marché ?</h2>

      <section class="container">
        <div class="content">
        <h1>L'étude de marché</h1>
        <h2>Et si nous prenions de la hauteur ensemble ?</h2>

      <section class="container">
        <div class="content">
          <h1>Comment cela va se dérouler ? </h1>
          <p> contactez-nous et discutons de votre projet ! cela nous permettra de bien cimprendre l'objectif de cette etude de marché (est-ee que c'est vraiment utile ?).
             Nous verrrons ensuite, aprés quelques recherches préliminaires, si il y a un marché (nous ne vous ferons pas payé une étude "dans le vent") </p>
          <img src="/ressources/logo provisoire.png" alt="">
          <button> Contactez-nous</button>
          <div id="set-height"></div>

      <video id="v0" tabindex="0", autobuffer preload>

        <source type="video/mp4" src="/ressources/VIDEO/Market study.mp4"></source>
      <script src="/pages/sticky.js"></script>

        selector: "section",
        enter: function(el) {
        var frameNumber = 0, // start video at frame 0
        // lower numbers = faster playback
        playbackConst = 1000,
        // get page height from video duration
        setHeight = document.getElementById("set-height"),
        // select video element         
        vid = document.getElementById('v0');
        // var vid = $('#v0')[0]; // jquery option

    // dynamically set the page height according to video length
    vid.addEventListener('loadedmetadata', function() {
    setHeight.style.height = Math.floor(vid.duration) * playbackConst + "px";

    // Use requestAnimationFrame for smooth playback
    function scrollPlay(){ 
    var frameNumber  = window.pageYOffset/playbackConst;
    vid.currentTime  = frameNumber;



  <!-- Section 2 - prévi -->

    <section class="previ">
      <div class="previ-section">




"use strict";!function(e){"function"==typeof define&&define.amd?define(e):"undefined"!=typeof module&&module.exports?module.exports=e():window.enterView=e.call(this)}(function(){var e=function(e){function n(){g=window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||window.msRequestAnimationFrame||function(e){return setTimeout(e,1e3/60)}}function t(){if(h&&"number"==typeof h){var e=Math.min(Math.max(0,h),1);return q-e*q}return q}function i(){var e=document.documentElement.clientHeight,n=window.innerHeight||0;q=Math.max(e,n)}function o(){y=!1;var e=t();A=A.filter(function(n){var t=n.getBoundingClientRect(),i=t.top,o=i<e;if(o&&!n.__enter_view){if(m(n),_)return!1}else!o&&n.__enter_view&&w&&w(n);return n.__enter_view=o,!0}),A.length||window.removeEventListener("scroll",r,!0)}function r(){y||(y=!0,g(o))}function u(){i(),o()}function f(e){for(var n=e.length,t=[],i=0;i<n;i+=1)t.push(e[i]);return t}function c(e){var n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:document;return"string"==typeof e?f(n.querySelectorAll(e)):e instanceof NodeList?f(e):e instanceof Array?e:void 0}function d(){A=c(l)}function a(){window.addEventListener("resize",u,!0),window.addEventListener("scroll",r,!0),u()}function s(){var e=l&&m;e||console.error("must set selector and enter options"),n(),d(),a(),o()}var l=e.selector,m=e.enter,w=e.exit,v=e.offset,h=void 0===v?0:v,p=e.once,_=void 0!==p&&p,g=null,y=!1,A=[],q=0;s()};return e});


    font-family: "poppins", sans-serif;
    padding: 3em;
    background-color: black;

    position: fixed;
    bottom: 0;
    right: 0;
    width: 100%;

    display: block;

    z-index: 1;
    position: relative;


    position: sticky;
    position: -webkit-sticky;
    width: 100%;
    top: 33,3%;
    color: white;

h1 {
    font-size: 3em;
    background: black;
    display: inline-block;
    padding: 10px 15px;
    border-radius: 20px;
    margin: 0;


p {
font-size: 1.5em;

section:nth-of-type(1) {
    height: 2200px;

section:nth-of-type(2) {
    height: 1300px;

section:nth-of-type(3) {
    height: 800px;

/* à suivre la mise en forme de l'apparition du texte */

.entered {
        -webkit-animation: text-focus-in 1s cubic-bezier(0.550, 0.085, 0.680, 0.530) both;
                animation: text-focus-in 1s cubic-bezier(0.550, 0.085, 0.680, 0.530) both;

/* ----------------------------------------------
 * Generated by Animista on 2022-8-3 17:12:26
 * Licensed under FreeBSD License.
 * See http://animista.net/license for more info.
 * w: http://animista.net, t: @cssanimista
 * ---------------------------------------------- */

 * ----------------------------------------
 * animation text-focus-in
 * ----------------------------------------
 @-webkit-keyframes text-focus-in {
    0% {
      -webkit-filter: blur(12px);
              filter: blur(12px);
      opacity: 0;
    100% {
      -webkit-filter: blur(0px);
              filter: blur(0px);
      opacity: 1;
  @keyframes text-focus-in {
    0% {
      -webkit-filter: blur(12px);
              filter: blur(12px);
      opacity: 0;
    100% {
      -webkit-filter: blur(0px);
              filter: blur(0px);
      opacity: 1;
    background-image: linear-gradient(to right top, #2c71f6, #0d6fe4, #006cd2, #0068bf, #0163ac);
  .content button{
    margin-top: 20px;
    padding: 15px 20px;
    font-size: 15px;
    border-radius: 10px;
    border: none;
    outline: none;
    cursor: pointer;
    background-color: inherit;
    color: white;
    border: 1px solid white;
  .content button:hover {
    background-color: white;
    transition: background-color 0.5s;
    border: 1px solid white;
    color: #0163ac;
    font-weight: bold;

thank you so much for your help and time :)
Try changing position: relative; in the section styling to position: sticky; and then add top: 0px;.

See it that works and let me know.
hello, thank you for your help, it works !

but the text is just covering each other doesn't look like it disappearing, at least for the .content section, do you know how to fix it ?

Capture d’écran 2022-08-04 à 01.53.22.png

and do you know why my video keep being the background of my site ? I'd like that it stop after the script and before section 2 - previ in comment

thank you so much for your time and your help, it really helps me !
Sorry, was busy running around and packing the house yesterday (we're relocating). so maybe I'll try today then, if I won't be busy again.
Hey johna, no probs, I've been busy on blender so I let the website on the side for the moment, tell me if you found the problem !
thank you for your help, I hope that everything gone well during the relocation :)
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