How to perform jquery script only once? - javascript

I use the isInViewport script to play the video on scroll, but it doesn't look very good because it happens multiple times. Please tell how to limit the triggering of animation or video playback to literally once. Tried to add with one() and true/false but the code didn't work (I still green in jquery).
<div class="block"><span>Video below</span></div>
<div class="block video-block">
<video class="video" loop="loop" width="640" controls="controls" muted>
<source src="http://denis-creative.com/wp-content/uploads/2018/01/video.mp4" type="video/mp4" />
<source src="http://denis-creative.com/wp-content/uploads/2018/01/video.ogv" type="video/ogv" />
<source src="http://denis-creative.com/wp-content/uploads/2018/01/video.webm" type="video/webm" />
</video>
</div>
<div class="block"><span>Video above</span></div>
.block{
height: 100vh;
font-size: 60px;
text-align: center;
display: flex;
}
.block > *{
margin: auto;
display: inline-block;
max-width: 100%;
}
// Plugin isInViewport
!function(e,n){"object"==typeof exports&&"undefined"!=typeof module?n(require("jquery"),require("window")):"function"==typeof define&&define.amd?define("isInViewport",["jquery","window"],n):n(e.$,e.window)}(this,function(e,n){"use strict";function t(n){var t=this;if(1===arguments.length&&"function"==typeof n&&(n=[n]),!(n instanceof Array))throw new SyntaxError("isInViewport: Argument(s) passed to .do/.run should be a function or an array of functions");return n.forEach(function(n){"function"!=typeof n?(console.warn("isInViewport: Argument(s) passed to .do/.run should be a function or an array of functions"),console.warn("isInViewport: Ignoring non-function values in array and moving on")):[].slice.call(t).forEach(function(t){return n.call(e(t))})}),this}function o(n){var t=e("<div></div>").css({width:"100%"});n.append(t);var o=n.width()-t.width();return t.remove(),o}function r(t,i){var a=t.getBoundingClientRect(),u=a.top,c=a.bottom,f=a.left,l=a.right,d=e.extend({tolerance:0,viewport:n},i),s=!1,p=d.viewport.jquery?d.viewport:e(d.viewport);p.length||(console.warn("isInViewport: The viewport selector you have provided matches no element on page."),console.warn("isInViewport: Defaulting to viewport as window"),p=e(n));var w=p.height(),h=p.width(),v=p[0].toString();if(p[0]!==n&&"[object Window]"!==v&&"[object DOMWindow]"!==v){var g=p[0].getBoundingClientRect();u-=g.top,c-=g.top,f-=g.left,l-=g.left,r.scrollBarWidth=r.scrollBarWidth||o(p),h-=r.scrollBarWidth}return d.tolerance=~~Math.round(parseFloat(d.tolerance)),d.tolerance<0&&(d.tolerance=w+d.tolerance),l<=0||f>=h?s:s=d.tolerance?u<=d.tolerance&&c>=d.tolerance:c>0&&u<=w}function i(n){if(n){var t=n.split(",");return 1===t.length&&isNaN(t[0])&&(t[1]=t[0],t[0]=void 0),{tolerance:t[0]?t[0].trim():void 0,viewport:t[1]?e(t[1].trim()):void 0}}return{}}e="default"in e?e.default:e,n="default"in n?n.default:n,/**
* #author Mudit Ameta
* #license https://github.com/zeusdeux/isInViewport/blob/master/license.md MIT
*/
e.extend(e.expr[":"],{"in-viewport":e.expr.createPseudo?e.expr.createPseudo(function(e){return function(n){return r(n,i(e))}}):function(e,n,t){return r(e,i(t[3]))}}),e.fn.isInViewport=function(e){return this.filter(function(n,t){return r(t,e)})},e.fn.run=t});
//# isInViewport
// Play Video
$(function() {
var $video = $('.video');
var $window = $(window);
$window.scroll(function() {
if ($video.is(":in-viewport")) {
$video[0].play();
} else {
$video[0].pause();
}
});
});

You could add a var to check if the video is still playing (for example is_playing) and check it with an inner if:
$(function() {
var $video = $('.video');
var $window = $(window);
var is_playing = false;
$window.scroll(function() {
if ($video.is(":in-viewport")) {
if (!is_playing) {
is_playing = true;
$video[0].play();
}
} else {
$video[0].pause();
}
});
});

Related

HTML5 video full screen not populate on android browser on mobile view

I am trying to open a video in full screen on a mobile browser.
The video is showing just fine, but when I click the "full screen" button on the video, only the sound is playing, without the video nor the controls showing.
Could anyone please help me ?
You can find my HTML code below :
<div class = "container">
<div class = "row">
<div class = "col-md-12">
<p class="new-txt-styl-mob">Video Title</p>
<video class = "ved-sttng-mob" controls id = "control1" src = "video1.mp4" type="video/mp4" >
</div>
</div>
</div>
Here is my JavaScript code :
var myVideo;
window.onload = function()
{
myVideo = document.getElementById("control1");
myVideo.load();
myVideo.addEventListener("webkitfullscreenchange", setFullScreenMode);
}
function setFullScreenMode()
{
if(myVideo.requestFullscreen) {
myVideo.requestFullscreen();
} else if (myVideo.webkitRequestFullscreen) {
myVideo.webkitRequestFullscreen();
} else if (myVideo.msRequestFullscreen) {
myVideo.msRequestFullscreen();
} else if (myVideo.mozRequestFullScreen) {
myVideo.mozRequestFullScreen();
}
}
And, finally, my CSS code :
.ved-sttng-mob {
width: 100%;
height: auto;
}
.ved-sttng-mob:-webkit-full-screen {
width: 100%;
height: auto;
}
You could try to use allowfullscreen like this
<video class = "ved-sttng-mob" controls id = "control1" src = "video1.mp4" type="video/mp4" allowfullcreen="true">

eventListener to alter between two elements

What I want is whenever I mouseover on an element for it to set the style of video to display: none; and then the img to display: block;
Here's my code:
Javascript
document.addEventListener("DOMContentLoaded", function() {
document.getElementById("container").addEventListener("mouseenter", function(event) {
alternate(event);
});
document.getElementById("container").addEventListener("mouseout", function(event) {
alternate(event);
});
function alternate(e) {
var target = e.target || e.srcElement;
if (target) {
if (target.nodeName == "IMG") {
target.querySelector(".video").style.display = "block";
target.querySelector(".img").style.display = "none";
} else if (target.nodeName == "VIDEO") {
target.querySelector(".video").style.display = "none";
target.querySelector(".img").style.display = "block";
}
}
}
});
HTML
<div id="container">
<li>
<div>
<video class="video" src="./test.mp4" type="video/mp4" muted autoplay></video>
<img class="img" src="./test.jpg"></img>
</div>
</li>
<li>
<div>
<video class="video" src="./test.mp4" type="video/mp4" muted autoplay></video>
<img class="img" src="./test.jpg"></img>
</div>
</li>
</div>
Essentially what I am trying to achieve is whenever I mouseout from the video, put the image back and then back from. video: hidden, image:shown to video:shown, image:hidden.
I did manage to get something working by using the target.previousSibling technique but it didn't work 100%,
Hopefully I formatted this question right, thank you for reading. Any help is really appreciated.
You could achieve this with pure CSS. A very simple approach would be:
.hover-toggle {
position: relative;
}
.hover-toggle .video {
/* Use absolute positioning to place video along-side image */
position: absolute;
top: 0;
left: 0;
/* Set video to be transparent by default */
opacity: 0;
}
/* When hovering the transparent video, cause it to become opaque */
.hover-toggle .video:hover {
opacity: 1;
}
<div class="hover-toggle">
<video class="video" src="https://www.w3schools.com/html/mov_bbb.mp4" type="video/mp4" muted autoplay></video>
<img class="img" src="https://via.placeholder.com/320x176" />
</div>
<div class="hover-toggle">
<video class="video" src="https://www.w3schools.com/html/mov_bbb.mp4" type="video/mp4" muted autoplay></video>
<img class="img" src="https://via.placeholder.com/320x176" />
</div>
mouseenter and mouseleave are the proper events to use.
If you use <li> then you must use <ol> or <ul> as the parent.
Register the events to each <li>
const items = document.querySelectorAll('li');
for (let item of items) {
item.addEventListener('mouseenter', alternate);
item.addEventListener('mouseleave', alternate);
}
Define the event handler using e.target and .matches('li') to insure that the events only apply to <li>. Then use e.type to insure that only mouseenter and mouseleave` events apply.
const tgt = e.target;
const evt = e.type;
if (tgt.matches('li')) {
if (evt === 'mouseenter') {
...
else if (evt === 'mouseleave') {
...
}
The reason why target.previousSibling worked some of the time is because display: none removes elements from the flow thereby not being recognized as a sibling. Try assigning a class that has visibility and z-index properties and alternate that class between events.
tgt.children[0].classList.add('on');
tgt.children[1].classList.remove('on');
// and vice versa
BTW <img> tags are void elements (no end tag </img>)
const items = document.querySelectorAll('li');
for (let item of items) {
item.addEventListener('mouseenter', alternate);
item.addEventListener('mouseleave', alternate);
}
function alternate(e) {
const tgt = e.target;
const evt = e.type;
if (tgt.matches('li')) {
if (evt === 'mouseenter') {
tgt.children[0].classList.add('on');
tgt.children[1].classList.remove('on');
} else if (evt === 'mouseleave') {
tgt.children[1].classList.add('on');
tgt.children[0].classList.remove('on');
} else {
return false;
}
}
return false;
}
li {
position: relative;
height: 135px;
}
li * {
visibility: hidden;
position: absolute;
z-index: -1;
top: 0;
left: 0;
}
.on {
visibility: visible;
z-index: 1;
}
<ul>
<li>
<video src='https://storage04.dropshots.com/photos6000/photos/1381926/20170326/005610.mp4' muted autoplay loop width='240' height='135'></video>
<img class='on' src='https://branditprintit.com/wp-content/uploads/2017/04/logo-degin-logo-design-design-art-free.png' width='240' height='135'>
</li>
<li>
<video src='https://storage04.dropshots.com/photos6000/photos/1381926/20170326/005609.mp4' muted autoplay loop width='240' height='135'></video>
<img class='on' src='https://branditprintit.com/wp-content/uploads/2017/04/logo-degin-logo-design-design-art-free.png' width='240' height='135'>
</li>
</ul>

Slow video down to a stop gradually

I'm working on a project where a video plays in the background and events need to be fired at certain points in the video. At these points, the video needs to gradually slow down and stop before the event displays.
So far I have made this happen by getting the frame rate and the more it goes up the slower the video playback is, however, it is quite stuttery and jumps into slowing down very fast I would like something smoother. Also currently when you then want to replay the video it falls within the slow down to a stop area of the frames and starts to slow down before starting to play again. I've put in a different video to my actual video as for demo purposes so there is only one event which actually fires in this due to the video being small but there's need to be multiple events at different points in the video.
var currentFrame = $('#currentFrame');
var video = VideoFrame({
id: 'video',
frameRate: 29.97,
callback: function(frame) {
currentFrame.html(frame);
if ((frame > 60) && (frame < 135) || (frame > 875) && (frame < 952) || (frame > 1700) && (frame < 1798)) {
decrease_rate(frame);
} else {
reset_frames_rate();
}
}
});
$('#play-pause').click(function() {
ChangeButtonText();
});
window.decrease_rate = decrease_rate;
var frame_on_start = 0,
frame_rate_dif,
new_speed;
function decrease_rate(frame) {
if (frame_on_start == 0) {
console.log("frame rate reset");
frame_on_start = frame;
} else {
frame_rate_dif = frame - frame_on_start;
new_speed = 1 - (frame_rate_dif / 100);
document.querySelector('video').playbackRate = new_speed;
if (frame_rate_dif > 65) {
reset_frames_rate();
video.video.pause();
video.stopListen();
$("#play-pause").html('Play');
show_event();
}
}
}
window.show_event = show_event;
function show_event() {
$('.event1').removeClass('hide_event');
}
window.reset_frames_rate = reset_frames_rate;
function reset_frames_rate() {
frame_on_start = 0;
frame_rate_dif = 0;
document.querySelector('video').playbackRate = 1;
}
function ChangeButtonText() {
if (video.video.paused) {
video.video.play();
video.listen('frame');
$("#play-pause").html('Pause');
$('.event1').addClass('hide_event');
} else {
video.video.pause();
video.stopListen();
$("#play-pause").html('Play');
}
}
#container {
position: relative;
}
.hide_event {
display: none;
}
.event1 {
position: absolute;
top: 40%;
left: 0px;
background-color: white;
width: 100%;
text-align: center;
}
<script src="https://rawgit.com/allensarkisyan/VideoFrame/master/VideoFrame.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="container">
<video height="180" width="100%" id="video">
<source src="http://www.w3schools.com/html/mov_bbb.mp4"></source>
</video>
<div id="event1" class="event1 hide_event">
<p>Display event</p>
</div>
</div>
<div class="frame">
<span id="currentFrame">0</span>
</div>
<div id="controls">
<button id="play-pause">Play</button>
</div>

Change video of video tag on scroll

I have a video tag say
<div class="phone" align="center">
<div class="phone-inner">
<video width="100%" height="100%" autoplay="" loop="" muted id="phonevideo">
<source src="vid/1.mp4" type="video/mp4">
</video>
</div>
</div>
I want to change the video when page scrolls and each time div changes like fueled.com. Say I have six divisions like
<div id="first></div>
<div id="two"></div>
<div id="three"></div>
<div id="four"></div>
<div id="five"></div>
<div id="six"></div>
When div 2 comes into view the video should change and when div 3 or 4 comes into view video should change again to something else. Here is my code which needs to be modified according to it.
$(window).scroll(function() {
var topDivHeight = $("#first").height();
var DivTop = $("#sixth").position().top;
var viewPortSize = $(window).height();
var triggerAt = 450;
var triggerHeight = (topDivHeight - viewPortSize) + triggerAt;
var test1 = (topDivHeight - viewPortSize) + 650;
var count = 0;
var number = jQuery.grep(mainTops, function(n, i) {
if (n < $(window).scrollTop())
{
count++;
}
});
$('.nav ul li a').css("color", "#fff");
$('.nav ul li a#nav'+count ).css("color", "#f60");
if($(window).scrollTop() >= triggerHeight && $(window).scrollTop() < DivTop) {
$('.phone').css('visibility', 'visible').fadeIn();
if($(window).scrollTop() >= test1){
$('#phonevideo').html('<source src="vid/2.mp4" type="video/mp4">'); // tried using this method but its not working here. Some other method needed here.
}
} else {
$('.phone').fadeOut();
}
});
Try this code:
$('#phonevideo').find("source").attr("src", "https://www.w3schools.com/tags/movie.mp4");
$('#phonevideo').get(0).load();
You can change source attribute like $('#phonevideo').find("source").attr("src","videosource")
and after changing source you need to load video $('#phonevideo').get(0).load()
You cannot directly replace the HTML as you do using function .html(), accordingly to the HTML specification
Dynamically modifying a source element and its attribute when the
element is already inserted in a video or audio element will have no
effect.
But what you can try as suggested by the document is to change what is playing, just use the src attribute on the media element directly and use function .load();
A working example below:
var btn = document.getElementById('btn'),
player = document.getElementById('phonevideo'),
source = document.getElementById('src');
btn.addEventListener('click', function(event) {
player.pause();
source.src = 'http://html5demos.com/assets/dizzy.mp4'; // change video
player.load(); // load it
});
<div class="phone" align="center">
<div class="phone-inner">
<video width="100%" height="100%" autoplay="" loop="" muted id="phonevideo">
<source id="src" src="http://www.quirksmode.org/html5/videos/big_buck_bunny.mp4" type="video/mp4">
</video>
</div>
</div>
<button id="btn" type="button">Change Video!</button>
Using jQuery as on your example (not tested):
var player = $('#phonevideo');
player.find("source").attr("src", "http://html5demos.com/assets/dizzy.mp4");
player[0].load();
I've optimized your code. I have added a class to your divs and used the data attribute. Here is a working jsfiddle.
<div class="phone" align="center">
<div class="phone-inner">
<video width="100%" height="100%" autoplay="" loop="" muted id="phonevideo">
<source src="vid/1.mp4" type="video/mp4">
</video>
</div>
</div>
<div id="first" class="view" data-vid-src="vid/1.mp4"></div>
<div id="two" class="view" data-vid-src="vid/2.mp4"></div>
<div id="three" class="view" data-vid-src="vid/3.mp4"></div>
<div id="four" class="view" data-vid-src="vid/4.mp4"></div>
<div id="five" class="view" data-vid-src="vid/5.mp4"></div>
<div id="six" class="view" data-vid-src="vid/6.mp4"></div>
To see some result I have added some css:
.phone {
position: fixed;
height: 200px;
width: 120px;
background: white;
top: 50%;
left: 50%;
margin-top: -100px;
margin-left: -60px;
}
.view {
height: 500px;
}
#first {
background: red;
}
#two {
background: yellow;
}
#three {
background: green;
}
#four {
background: blue;
}
#five {
background: pink;
}
#six {
background: black;
}
And now the jQuery part.
function getCurrentElement(pos) {
var len = $('.view').length;
var i = 0;
var old_pos;
var ele_pos;
var old_ele;
var return_ele;
$('.view').each(function(){
i++;
offset = $(this).offset();
ele_pos = offset.top;
if(pos == ele_pos) {
return_ele = $(this);
return;
}
else if(ele_pos > pos && old_pos < pos) {
return_ele = old_ele;
return;
}
else if(ele_pos < pos && i == len) {
return_ele = $(this);
return;
}
old_pos = ele_pos;
old_ele = $(this);
});
return return_ele;
}
var old_ele = null;
$(window).scroll(function() {
var cur_pos = $(window).scrollTop();
current_element = getCurrentElement(cur_pos);
if(old_ele != null) {
if(current_element.attr('id') != old_ele.attr('id')) {
$('#phonevideo source').attr('src',current_element.attr('data-vid-src'))
}
}
old_ele = current_element;
});
I hope this code will help you. :)

jQuery element looping like a playlist under div

I want to program a effect like digital signage in the webpage but I am not sure how to do it, please kindly offer some help in here.
I have several div in the page which is the place holder of region.
For each region, there are multiple media inside.
For a defined duration the current media will play other will be hidden (or destroy) and the subsequence media will come out in the same position.
Most importantly, when the last element is reach, i will replay the whole sequence again. so the webpage keep rolling.
I have made a JSFiddle for this case, please kindly help on this and i have spend a day on that on my poor coding.....
https://jsfiddle.net/vx8Lp9xd/11/
HTML
<body>
<div class='timecontrol region1 position' >
<video duration='30' width="320" height="240" controls class='position'>
<source src="movie.mp4" type="video/mp4">
</video>
<video duration='0' width="320" height="240" controls class='position'>
<source src="movie.mp4" type="video/mp4">
</video>
</div>
<div class='timecontrol region2 position'>
<img class='position' duration='10' src='1.gif'></img>
<img class='position' duration='20' src='2.gif'></img>
</div>
<div class='readyState'></div>
</body>
Javascript
function checkContainer () {
if($('#readyState').is(':visible')){ //if the container is visible on the page
$('.timecontrol').each(function() {
var elements = new Array();
elements = $(this).children().toArray();
for (element in elements){
$(element).not(element).remove();
$(element).show();
$(element).delay(parseInt($(element).attr('duration'))*1000).hide(0);
}
});
}
}
$( document ).ready(function() {
checkContainer();
});
CSS
.position{
position:absolute;
}
.region1{
position:absolute;
top:0px;
left:0px;
height:320px;
width:240px;
}
.region2{
position:absolute;
top:px;
left:320px;
height:320px;
width:100px;
border:1px;
}
A recursive function (a function that calls itself) is probably better suited to your needs here than .each() or a for loop. Here is how I would do it with recursion:
jsFiddle
function checkContainer() {
if ($('#readyState').is(':visible')) { //if the container is visible on the page
$('.timecontrol').each(function () {
change($(this).children());
});
}
}
function change(elements, index) {
index = !index || index > elements.length - 1 ? 0 : index; // if index is higher than the index of the last element or not set at all, default to 0
var element = $(elements[index]);
var timeframe = parseInt(element.attr('duration')) * 1000;
element.siblings().hide();
element.show();
if (element[0].tagName.match(/video/i)) element[0].play();
setTimeout(function () {
element.hide(0);
if (element[0].tagName.match(/video/i)) element[0].pause();
change(elements, index+1); // recursively call this same functoin passing in the elements and the index of the next one up
}, timeframe);
}
$(document).ready(function () {
checkContainer();
});
.position {
position:absolute;
}
.region1 {
position:absolute;
top:0px;
left:0px;
height:320px;
width:240px;
}
.region2 {
position:absolute;
top:px;
left:320px;
height:320px;
width:100px;
border:1px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class='timecontrol region1 position'>
<video duration='6' width="320" height="240" controls class='position'>
<source src="http://stream.flowplayer.org/functional.mp4" type="video/mp4">
</video>
<video duration='6' width="320" height="240" controls class='position'>
<source src="http://stream.flowplayer.org/bauhaus.mp4" type="video/mp4">
</video>
</div>
<div class='timecontrol region2 position'>
<img class='position' duration='10' src='https://placeimg.com/350/150/any'></img>
<img class='position' duration='20' src='https://placeimg.com/350/150/animals'></img>
</div>
<div id='readyState'></div>

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