In this lab, I followed the instruction from JavaScript30 and recreated the Custom Video Player activity. First off, I made the HTML, CSS, and JavaScript files. Secondly, the <html>, <head>, <body>, <meta>, and <title> tags were already inserted in the HTML file. Thirdly, I typed in <link rel="stylesheet" type="text/css" href="Lab_25.css"> inside the <head> tags to link the CSS file with my HTML file. Fourthly, I typed in <script src="Lab_25.js" type="text/javascript"></script> inside the <body> tags which linked my JavaScript file with my HTML file. Inside the <body> tags, I typed the heading for the lab which has my name, date, and lab number with <div id="heading"><h1>Lab 25</h1><h2>Wei Jian Zhen</h2><h3>12/24/2019</h3></div>. After that, I typed in <div>, <input>, and <button> tags which built the video player. Afterwords, I typed in <p> and <a> tags that credited the video. Lastly, I made the copyright notice with <p> and <div> tags. For the CSS I did html {width: 100%; height: auto;} body {background-color: #00FFA8; min-width: 100%; min-height: 100%;} to give the webpage a background color and make the webpage responsive to screen size changes. #heading {text-align: center; font-size: 16px;} to center the heading of the lab. #copyright {font-size: 16px; font-family: Baskerville, "Palatino Linotype", Palatino, "Century Schoolbook L", "Times New Roman", "serif"; font-weight: normal; padding-left: 1%; padding-right: 1%;} to change the font of the copyright notice. Next I did:
.player {
margin: 0 auto;
max-width: 750px;
border: 5px solid rgba(0,0,0,0.2);
box-shadow: 0 0 20px rgba(0,0,0,0.2);
position: relative;
font-size: 0;
overflow: hidden;
}
/* This css is only applied when fullscreen is active. */
.player:fullscreen {
max-width: none;
width: 100%;
}
.player:-webkit-full-screen {
max-width: none;
width: 100%;
}
.player__video {
width: 100%;
}
.player__button {
background: none;
border: 0;
line-height: 1;
color: white;
text-align: center;
outline: 0;
padding: 0;
cursor: pointer;
max-width: 50px;
}
.player__button:focus {
border-color: #ffc600;
}
.player__slider {
width: 10px;
height: 30px;
}
.player__controls {
display: flex;
position: absolute;
bottom: 0;
width: 100%;
transform: translateY(100%) translateY(-5px);
transition: all .3s;
flex-wrap: wrap;
background: rgba(0,0,0,0.1);
}
.player:hover .player__controls {
transform: translateY(0);
}
.player:hover .progress {
height: 15px;
}
.player__controls > * {
flex: 1;
}
.progress {
flex: 10;
position: relative;
display: flex;
flex-basis: 100%;
height: 5px;
transition: height 0.3s;
background: rgba(0,0,0,0.5);
cursor: ew-resize;
}
.progress__filled {
width: 50%;
background: #ffc600;
flex: 0;
flex-basis: 50%;
}
/* unholy css to style input type="range" */
input[type=range] {
-webkit-appearance: none;
background: transparent;
width: 100%;
margin: 0 5px;
}
input[type=range]:focus {
outline: none;
}
input[type=range]::-webkit-slider-runnable-track {
width: 100%;
height: 8.4px;
cursor: pointer;
box-shadow: 1px 1px 1px rgba(0, 0, 0, 0), 0 0 1px rgba(13, 13, 13, 0);
background: rgba(255,255,255,0.8);
border-radius: 1.3px;
border: 0.2px solid rgba(1, 1, 1, 0);
}
input[type=range]::-webkit-slider-thumb {
height: 15px;
width: 15px;
border-radius: 50px;
background: #ffc600;
cursor: pointer;
-webkit-appearance: none;
margin-top: -3.5px;
box-shadow:0 0 2px rgba(0,0,0,0.2);
}
input[type=range]:focus::-webkit-slider-runnable-track {
background: #bada55;
}
input[type=range]::-moz-range-track {
width: 100%;
height: 8.4px;
cursor: pointer;
box-shadow: 1px 1px 1px rgba(0, 0, 0, 0), 0 0 1px rgba(13, 13, 13, 0);
background: #ffffff;
border-radius: 1.3px;
border: 0.2px solid rgba(1, 1, 1, 0);
}
input[type=range]::-moz-range-thumb {
box-shadow: 0 0 0 rgba(0, 0, 0, 0), 0 0 0 rgba(13, 13, 13, 0);
height: 15px;
width: 15px;
border-radius: 50px;
background: #ffc600;
cursor: pointer;
}
which made the video screen and options colorful, positioned well, and sized. For the JavaScript, I put:
// JavaScript Document
/* Get Our Elements */
const player = document.querySelector('.player');
const video = player.querySelector('.viewer');
const progress = player.querySelector('.progress');
const progressBar = player.querySelector('.progress__filled');
const toggle = player.querySelector('.toggle');
const skipButtons = player.querySelectorAll('[data-skip]');
const ranges = player.querySelectorAll('.player__slider');
/* Build out functions */
function togglePlay() {
const method = video.paused ? 'play' : 'pause';
video[method]();
}
function updateButton() {
const icon = this.paused ? '►' : '❚ ❚';
console.log(icon);
toggle.textContent = icon;
}
function skip() {
video.currentTime += parseFloat(this.dataset.skip);
}
function handleRangeUpdate() {
video[this.name] = this.value;
}
function handleProgress() {
const percent = (video.currentTime / video.duration) * 100;
progressBar.style.flexBasis = `${percent}%`;
}
function scrub(e) {
const scrubTime = (e.offsetX / progress.offsetWidth) * video.duration;
video.currentTime = scrubTime;
}
/* Hook up the event listeners */
video.addEventListener('click', togglePlay);
video.addEventListener('play', updateButton);
video.addEventListener('pause', updateButton);
video.addEventListener('timeupdate', handleProgress);
toggle.addEventListener('click', togglePlay);
skipButtons.forEach(button => button.addEventListener('click', skip));
ranges.forEach(range => range.addEventListener('change', handleRangeUpdate));
ranges.forEach(range => range.addEventListener('mousemove', handleRangeUpdate));
let mousedown = false;
progress.addEventListener('click', scrub);
progress.addEventListener('mousemove', (e) => mousedown && scrub(e));
progress.addEventListener('mousedown', () => mousedown = true);
progress.addEventListener('mouseup', () => mousedown = false);
which allowed for user interaction with the video like pausing and speeding up the video.
Knowing how to make custom video player is useful to a web designer because it allows the web designer to do his/her job more effectively and efficiently.
Link:
http://techteach.us/Web2020/ZWeiJian/WCP/Labs/Lab_25/Lab_25.html
