Create a Custom JavaScript Audio Player with playlist & visualizer

In this tutorial you’ll learn how to make a custom audio player with JavaScript with a playlist and visualizer.

Get the source code here: https://github.com/codebubb/javascrip…

The visualisations article on MDN: https://developer.mozilla.org/en-US/d…

00:42 Setup

02:52 Creating elements

08:49 Hooking up playback

15:46 Styling the player

21:20 Adding the viusaliser

30:58 Customising the visualiser

#javascript

PyTumblr: A Python Tumblr API v2 Client

PyTumblr

Installation

Install via pip:

$ pip install pytumblr

Install from source:

$ git clone https://github.com/tumblr/pytumblr.git
$ cd pytumblr
$ python setup.py install

Usage

Create a client

A pytumblr.TumblrRestClient is the object you'll make all of your calls to the Tumblr API through. Creating one is this easy:

client = pytumblr.TumblrRestClient(
    '<consumer_key>',
    '<consumer_secret>',
    '<oauth_token>',
    '<oauth_secret>',
)

client.info() # Grabs the current user information

Two easy ways to get your credentials to are:

The built-in interactive_console.py tool (if you already have a consumer key & secret)
The Tumblr API console at https://api.tumblr.com/console
Get sample login code at https://api.tumblr.com/console/calls/user/info

Supported Methods

User Methods

client.info() # get information about the authenticating user
client.dashboard() # get the dashboard for the authenticating user
client.likes() # get the likes for the authenticating user
client.following() # get the blogs followed by the authenticating user

client.follow('codingjester.tumblr.com') # follow a blog
client.unfollow('codingjester.tumblr.com') # unfollow a blog

client.like(id, reblogkey) # like a post
client.unlike(id, reblogkey) # unlike a post

Blog Methods

client.blog_info(blogName) # get information about a blog
client.posts(blogName, **params) # get posts for a blog
client.avatar(blogName) # get the avatar for a blog
client.blog_likes(blogName) # get the likes on a blog
client.followers(blogName) # get the followers of a blog
client.blog_following(blogName) # get the publicly exposed blogs that [blogName] follows
client.queue(blogName) # get the queue for a given blog
client.submission(blogName) # get the submissions for a given blog

Post Methods

Creating posts

PyTumblr lets you create all of the various types that Tumblr supports. When using these types there are a few defaults that are able to be used with any post type.

The default supported types are described below.

state - a string, the state of the post. Supported types are published, draft, queue, private
tags - a list, a list of strings that you want tagged on the post. eg: ["testing", "magic", "1"]
tweet - a string, the string of the customized tweet you want. eg: "Man I love my mega awesome post!"
date - a string, the customized GMT that you want
format - a string, the format that your post is in. Support types are html or markdown
slug - a string, the slug for the url of the post you want

We'll show examples throughout of these default examples while showcasing all the specific post types.

Creating a photo post

Creating a photo post supports a bunch of different options plus the described default options * caption - a string, the user supplied caption * link - a string, the "click-through" url for the photo * source - a string, the url for the photo you want to use (use this or the data parameter) * data - a list or string, a list of filepaths or a single file path for multipart file upload

#Creates a photo post using a source URL
client.create_photo(blogName, state="published", tags=["testing", "ok"],
                    source="https://68.media.tumblr.com/b965fbb2e501610a29d80ffb6fb3e1ad/tumblr_n55vdeTse11rn1906o1_500.jpg")

#Creates a photo post using a local filepath
client.create_photo(blogName, state="queue", tags=["testing", "ok"],
                    tweet="Woah this is an incredible sweet post [URL]",
                    data="/Users/johnb/path/to/my/image.jpg")

#Creates a photoset post using several local filepaths
client.create_photo(blogName, state="draft", tags=["jb is cool"], format="markdown",
                    data=["/Users/johnb/path/to/my/image.jpg", "/Users/johnb/Pictures/kittens.jpg"],
                    caption="## Mega sweet kittens")

Creating a text post

Creating a text post supports the same options as default and just a two other parameters * title - a string, the optional title for the post. Supports markdown or html * body - a string, the body of the of the post. Supports markdown or html

#Creating a text post
client.create_text(blogName, state="published", slug="testing-text-posts", title="Testing", body="testing1 2 3 4")

Creating a quote post

Creating a quote post supports the same options as default and two other parameter * quote - a string, the full text of the qote. Supports markdown or html * source - a string, the cited source. HTML supported

#Creating a quote post
client.create_quote(blogName, state="queue", quote="I am the Walrus", source="Ringo")

Creating a link post

title - a string, the title of post that you want. Supports HTML entities.
url - a string, the url that you want to create a link post for.
description - a string, the desciption of the link that you have

#Create a link post
client.create_link(blogName, title="I like to search things, you should too.", url="https://duckduckgo.com",
                   description="Search is pretty cool when a duck does it.")

Creating a chat post

Creating a chat post supports the same options as default and two other parameters * title - a string, the title of the chat post * conversation - a string, the text of the conversation/chat, with diablog labels (no html)

#Create a chat post
chat = """John: Testing can be fun!
Renee: Testing is tedious and so are you.
John: Aw.
"""
client.create_chat(blogName, title="Renee just doesn't understand.", conversation=chat, tags=["renee", "testing"])

Creating an audio post

Creating an audio post allows for all default options and a has 3 other parameters. The only thing to keep in mind while dealing with audio posts is to make sure that you use the external_url parameter or data. You cannot use both at the same time. * caption - a string, the caption for your post * external_url - a string, the url of the site that hosts the audio file * data - a string, the filepath of the audio file you want to upload to Tumblr

#Creating an audio file
client.create_audio(blogName, caption="Rock out.", data="/Users/johnb/Music/my/new/sweet/album.mp3")

#lets use soundcloud!
client.create_audio(blogName, caption="Mega rock out.", external_url="https://soundcloud.com/skrillex/sets/recess")

Creating a video post

Creating a video post allows for all default options and has three other options. Like the other post types, it has some restrictions. You cannot use the embed and data parameters at the same time. * caption - a string, the caption for your post * embed - a string, the HTML embed code for the video * data - a string, the path of the file you want to upload

#Creating an upload from YouTube
client.create_video(blogName, caption="Jon Snow. Mega ridiculous sword.",
                    embed="http://www.youtube.com/watch?v=40pUYLacrj4")

#Creating a video post from local file
client.create_video(blogName, caption="testing", data="/Users/johnb/testing/ok/blah.mov")

Editing a post

Updating a post requires you knowing what type a post you're updating. You'll be able to supply to the post any of the options given above for updates.

client.edit_post(blogName, id=post_id, type="text", title="Updated")
client.edit_post(blogName, id=post_id, type="photo", data="/Users/johnb/mega/awesome.jpg")

Reblogging a Post

Reblogging a post just requires knowing the post id and the reblog key, which is supplied in the JSON of any post object.

client.reblog(blogName, id=125356, reblog_key="reblog_key")

Deleting a post

Deleting just requires that you own the post and have the post id

client.delete_post(blogName, 123456) # Deletes your post :(

A note on tags: When passing tags, as params, please pass them as a list (not a comma-separated string):

client.create_text(blogName, tags=['hello', 'world'], ...)

Getting notes for a post

In order to get the notes for a post, you need to have the post id and the blog that it is on.

data = client.notes(blogName, id='123456')

The results include a timestamp you can use to make future calls.

data = client.notes(blogName, id='123456', before_timestamp=data["_links"]["next"]["query_params"]["before_timestamp"])

Tagged Methods

# get posts with a given tag
client.tagged(tag, **params)

Using the interactive console

This client comes with a nice interactive console to run you through the OAuth process, grab your tokens (and store them for future use).

You'll need pyyaml installed to run it, but then it's just:

$ python interactive-console.py

and away you go! Tokens are stored in ~/.tumblr and are also shared by other Tumblr API clients like the Ruby client.

Running tests

The tests (and coverage reports) are run with nose, like this:

python setup.py test

Author: tumblr
Source Code: https://github.com/tumblr/pytumblr
License: Apache-2.0 license

#python #api

Tamale Moses

1669003576

Exploring Mutable and Immutable in Python

In this Python article, let's learn about Mutable and Immutable in Python.

Mutable and Immutable in Python

Mutable is a fancy way of saying that the internal state of the object is changed/mutated. So, the simplest definition is: An object whose internal state can be changed is mutable. On the other hand, immutable doesn’t allow any change in the object once it has been created.

Both of these states are integral to Python data structure. If you want to become more knowledgeable in the entire Python Data Structure, take this free course which covers multiple data structures in Python including tuple data structure which is immutable. You will also receive a certificate on completion which is sure to add value to your portfolio.

Mutable Definition

Mutable is when something is changeable or has the ability to change. In Python, ‘mutable’ is the ability of objects to change their values. These are often the objects that store a collection of data.

Immutable Definition

Immutable is the when no change is possible over time. In Python, if the value of an object cannot be changed over time, then it is known as immutable. Once created, the value of these objects is permanent.

List of Mutable and Immutable objects

Objects of built-in type that are mutable are:

Lists
Sets
Dictionaries
User-Defined Classes (It purely depends upon the user to define the characteristics)

Objects of built-in type that are immutable are:

Numbers (Integer, Rational, Float, Decimal, Complex & Booleans)
Strings
Tuples
Frozen Sets
User-Defined Classes (It purely depends upon the user to define the characteristics)

Object mutability is one of the characteristics that makes Python a dynamically typed language. Though Mutable and Immutable in Python is a very basic concept, it can at times be a little confusing due to the intransitive nature of immutability.

Objects in Python

In Python, everything is treated as an object. Every object has these three attributes:

Identity – This refers to the address that the object refers to in the computer’s memory.
Type – This refers to the kind of object that is created. For example- integer, list, string etc.
Value – This refers to the value stored by the object. For example – List=[1,2,3] would hold the numbers 1,2 and 3

While ID and Type cannot be changed once it’s created, values can be changed for Mutable objects.

Check out this free python certificate course to get started with Python.

Mutable Objects in Python

I believe, rather than diving deep into the theory aspects of mutable and immutable in Python, a simple code would be the best way to depict what it means in Python. Hence, let us discuss the below code step-by-step:

#Creating a list which contains name of Indian cities

cities = [‘Delhi’, ‘Mumbai’, ‘Kolkata’]

# Printing the elements from the list cities, separated by a comma & space

for city in cities:
		print(city, end=’, ’)

Output [1]: Delhi, Mumbai, Kolkata

#Printing the location of the object created in the memory address in hexadecimal format

print(hex(id(cities)))

Output [2]: 0x1691d7de8c8

#Adding a new city to the list cities

cities.append(‘Chennai’)

#Printing the elements from the list cities, separated by a comma & space

for city in cities:
	print(city, end=’, ’)

Output [3]: Delhi, Mumbai, Kolkata, Chennai

#Printing the location of the object created in the memory address in hexadecimal format

print(hex(id(cities)))

Output [4]: 0x1691d7de8c8

The above example shows us that we were able to change the internal state of the object ‘cities’ by adding one more city ‘Chennai’ to it, yet, the memory address of the object did not change. This confirms that we did not create a new object, rather, the same object was changed or mutated. Hence, we can say that the object which is a type of list with reference variable name ‘cities’ is a MUTABLE OBJECT.

Let us now discuss the term IMMUTABLE. Considering that we understood what mutable stands for, it is obvious that the definition of immutable will have ‘NOT’ included in it. Here is the simplest definition of immutable– An object whose internal state can NOT be changed is IMMUTABLE.

Again, if you try and concentrate on different error messages, you have encountered, thrown by the respective IDE; you use you would be able to identify the immutable objects in Python. For instance, consider the below code & associated error message with it, while trying to change the value of a Tuple at index 0.

#Creating a Tuple with variable name ‘foo’

foo = (1, 2)

#Changing the index[0] value from 1 to 3

foo[0] = 3
	
TypeError: 'tuple' object does not support item assignment

Immutable Objects in Python

Once again, a simple code would be the best way to depict what immutable stands for. Hence, let us discuss the below code step-by-step:

#Creating a Tuple which contains English name of weekdays

weekdays = ‘Sunday’, ‘Monday’, ‘Tuesday’, ‘Wednesday’, ‘Thursday’, ‘Friday’, ‘Saturday’

# Printing the elements of tuple weekdays

print(weekdays)

Output [1]:  (‘Sunday’, ‘Monday’, ‘Tuesday’, ‘Wednesday’, ‘Thursday’, ‘Friday’, ‘Saturday’)

#Printing the location of the object created in the memory address in hexadecimal format

print(hex(id(weekdays)))

Output [2]: 0x1691cc35090

#tuples are immutable, so you cannot add new elements, hence, using merge of tuples with the # + operator to add a new imaginary day in the tuple ‘weekdays’

weekdays  +=  ‘Pythonday’,

#Printing the elements of tuple weekdays

print(weekdays)

Output [3]: (‘Sunday’, ‘Monday’, ‘Tuesday’, ‘Wednesday’, ‘Thursday’, ‘Friday’, ‘Saturday’, ‘Pythonday’)

#Printing the location of the object created in the memory address in hexadecimal format

print(hex(id(weekdays)))

Output [4]: 0x1691cc8ad68

This above example shows that we were able to use the same variable name that is referencing an object which is a type of tuple with seven elements in it. However, the ID or the memory location of the old & new tuple is not the same. We were not able to change the internal state of the object ‘weekdays’. The Python program manager created a new object in the memory address and the variable name ‘weekdays’ started referencing the new object with eight elements in it. Hence, we can say that the object which is a type of tuple with reference variable name ‘weekdays’ is an IMMUTABLE OBJECT.

Also Read: Understanding the Exploratory Data Analysis (EDA) in Python

Where can you use mutable and immutable objects:

Mutable objects can be used where you want to allow for any updates. For example, you have a list of employee names in your organizations, and that needs to be updated every time a new member is hired. You can create a mutable list, and it can be updated easily.

Immutability offers a lot of useful applications to different sensitive tasks we do in a network centred environment where we allow for parallel processing. By creating immutable objects, you seal the values and ensure that no threads can invoke overwrite/update to your data. This is also useful in situations where you would like to write a piece of code that cannot be modified. For example, a debug code that attempts to find the value of an immutable object.

Watch outs: Non transitive nature of Immutability:

OK! Now we do understand what mutable & immutable objects in Python are. Let’s go ahead and discuss the combination of these two and explore the possibilities. Let’s discuss, as to how will it behave if you have an immutable object which contains the mutable object(s)? Or vice versa? Let us again use a code to understand this behaviour–

#creating a tuple (immutable object) which contains 2 lists(mutable) as it’s elements

#The elements (lists) contains the name, age & gender

person = (['Ayaan', 5, 'Male'], ['Aaradhya', 8, 'Female'])

#printing the tuple

print(person)

Output [1]: (['Ayaan', 5, 'Male'], ['Aaradhya', 8, 'Female'])

#printing the location of the object created in the memory address in hexadecimal format

print(hex(id(person)))

Output [2]: 0x1691ef47f88

#Changing the age for the 1st element. Selecting 1st element of tuple by using indexing [0] then 2nd element of the list by using indexing [1] and assigning a new value for age as 4

person[0][1] = 4

#printing the updated tuple

print(person)

Output [3]: (['Ayaan', 4, 'Male'], ['Aaradhya', 8, 'Female'])

#printing the location of the object created in the memory address in hexadecimal format

print(hex(id(person)))

Output [4]: 0x1691ef47f88

In the above code, you can see that the object ‘person’ is immutable since it is a type of tuple. However, it has two lists as it’s elements, and we can change the state of lists (lists being mutable). So, here we did not change the object reference inside the Tuple, but the referenced object was mutated.

Also Read: Real-Time Object Detection Using TensorFlow

Same way, let’s explore how it will behave if you have a mutable object which contains an immutable object? Let us again use a code to understand the behaviour–

#creating a list (mutable object) which contains tuples(immutable) as it’s elements

list1 = [(1, 2, 3), (4, 5, 6)]

#printing the list

print(list1)

Output [1]: [(1, 2, 3), (4, 5, 6)]

#printing the location of the object created in the memory address in hexadecimal format

print(hex(id(list1)))

Output [2]: 0x1691d5b13c8

#changing object reference at index 0

list1[0] = (7, 8, 9)

#printing the list

Output [3]: [(7, 8, 9), (4, 5, 6)]

#printing the location of the object created in the memory address in hexadecimal format

print(hex(id(list1)))

Output [4]: 0x1691d5b13c8

As an individual, it completely depends upon you and your requirements as to what kind of data structure you would like to create with a combination of mutable & immutable objects. I hope that this information will help you while deciding the type of object you would like to select going forward.

Before I end our discussion on IMMUTABILITY, allow me to use the word ‘CAVITE’ when we discuss the String and Integers. There is an exception, and you may see some surprising results while checking the truthiness for immutability. For instance:
#creating an object of integer type with value 10 and reference variable name ‘x’

x = 10

#printing the value of ‘x’

print(x)

Output [1]: 10

#Printing the location of the object created in the memory address in hexadecimal format

print(hex(id(x)))

Output [2]: 0x538fb560

#creating an object of integer type with value 10 and reference variable name ‘y’

y = 10

#printing the value of ‘y’

print(y)

Output [3]: 10

#Printing the location of the object created in the memory address in hexadecimal format

print(hex(id(y)))

Output [4]: 0x538fb560

As per our discussion and understanding, so far, the memory address for x & y should have been different, since, 10 is an instance of Integer class which is immutable. However, as shown in the above code, it has the same memory address. This is not something that we expected. It seems that what we have understood and discussed, has an exception as well.

Quick check – Python Data Structures

Immutability of Tuple

Tuples are immutable and hence cannot have any changes in them once they are created in Python. This is because they support the same sequence operations as strings. We all know that strings are immutable. The index operator will select an element from a tuple just like in a string. Hence, they are immutable.

Exceptions in immutability

Like all, there are exceptions in the immutability in python too. Not all immutable objects are really mutable. This will lead to a lot of doubts in your mind. Let us just take an example to understand this.

Consider a tuple ‘tup’.

Now, if we consider tuple tup = (‘GreatLearning’,[4,3,1,2]) ;

We see that the tuple has elements of different data types. The first element here is a string which as we all know is immutable in nature. The second element is a list which we all know is mutable. Now, we all know that the tuple itself is an immutable data type. It cannot change its contents. But, the list inside it can change its contents. So, the value of the Immutable objects cannot be changed but its constituent objects can. change its value.

FAQs

1. Difference between mutable vs immutable in Python?

Mutable Object	Immutable Object
State of the object can be modified after it is created.	State of the object can’t be modified once it is created.
They are not thread safe.	They are thread safe
Mutable classes are not final.	It is important to make the class final before creating an immutable object.

2. What are the mutable and immutable data types in Python?

Some mutable data types in Python are:

list, dictionary, set, user-defined classes.

Some immutable data types are:

int, float, decimal, bool, string, tuple, range.

3. Are lists mutable in Python?

Lists in Python are mutable data types as the elements of the list can be modified, individual elements can be replaced, and the order of elements can be changed even after the list has been created.
(Examples related to lists have been discussed earlier in this blog.)

4. Why are tuples called immutable types?

Tuple and list data structures are very similar, but one big difference between the data types is that lists are mutable, whereas tuples are immutable. The reason for the tuple’s immutability is that once the elements are added to the tuple and the tuple has been created; it remains unchanged.

A programmer would always prefer building a code that can be reused instead of making the whole data object again. Still, even though tuples are immutable, like lists, they can contain any Python object, including mutable objects.

5. Are sets mutable in Python?

A set is an iterable unordered collection of data type which can be used to perform mathematical operations (like union, intersection, difference etc.). Every element in a set is unique and immutable, i.e. no duplicate values should be there, and the values can’t be changed. However, we can add or remove items from the set as the set itself is mutable.

6. Are strings mutable in Python?

Strings are not mutable in Python. Strings are a immutable data types which means that its value cannot be updated.

Join Great Learning Academy’s free online courses and upgrade your skills today.

Original article source at: https://www.mygreatlearning.com

#python

Joshua Yates

1664183033

Create a Custom Music Player with HTML, CSS & JavaScript

In this tutorial, you'll learn how to create a custom music player with HTML, CSS and JavaScript.

The music player project might seem to be lengthy and complicated at first but I have divided the JavaScript code into 15 easy steps. You can easily create and customize the music player with these 15 steps.

Create Initial References
Create An Array For Song List
Detect If It Is A Touch Device
Format Time
A Function To Set Song
Function To Play Song
Implement Function To Toggle Repeat Mode
Function To Play Next Song
Function To Pause Song
Create Function To Play Previous Song
Function To Toggle Shuffle Mode
Adding Event Listener to Progress Bar
Updating Progress Bar and Time
Function To Create Playlist
Function To Show & Hide Playlist

HTML:

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Custom Music Player</title>
    <!-- Font Awesome Icons -->
    <link
      rel="stylesheet"
      href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.1.1/css/all.min.css"
      integrity="sha512-KfkfwYDsLkIlwQp6LFnl8zNdLGxu9YAA1QvwINks4PhcElQSvqcyVLLD9aMhXd13uQjoXtEKNosOWaZqXgel0g=="
      crossorigin="anonymous"
      referrerpolicy="no-referrer"
    />
    <!-- Google Fonts -->
    <link
      href="https://fonts.googleapis.com/css2?family=Poppins:wght@400;600&family=Roboto+Mono&display=swap"
      rel="stylesheet"
    />
    <!-- Stylesheet -->
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="music-player">
      <button id="playlist">
        <i class="fa-solid fa-angle-down"></i>
      </button>
      <img id="song-image" src="make-me-move.jpg" />
      <div class="song-details">
        <p id="song-name">Make Me Move</p>
        <p id="song-artist">Culture Code</p>
      </div>
      <div class="player-options">
        <button id="shuffle">
          <i class="fa-solid fa-shuffle"></i>
        </button>
        <button id="prev">
          <i class="fa-solid fa-backward-step"></i>
        </button>
        <button id="play">
          <i class="fa-solid fa-play"></i>
        </button>
        <button id="pause" class="hide">
          <i class="fa-solid fa-pause"></i>
        </button>
        <button id="next">
          <i class="fa-solid fa-forward-step"></i>
        </button>
        <button id="repeat">
          <i class="fa-solid fa-repeat"></i>
        </button>
      </div>
      <audio id="audio" preload="metadata"></audio>
      <div id="progress-bar">
        <div id="current-progress"></div>
      </div>
      <div class="time-container">
        <span id="current-time">0:00</span>
        <span id="max-duration">0:00</span>
      </div>
      <div id="playlist-container" class="hide">
        <button id="close-button">
          <i class="fa-solid fa-xmark"></i>
        </button>
        <ul id="playlist-songs"></ul>
      </div>
    </div>
    <!-- Script -->
    <script src="script.js"></script>
  </body>
</html>

CSS:

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
body {
  height: 100vh;
  background: linear-gradient(to bottom, #2887e3 50%, #16191e 50%);
}
.music-player {
  font-size: 16px;
  width: 80vw;
  max-width: 25em;
  background-color: #ffffff;
  padding: 3em 1.8em;
  position: absolute;
  transform: translate(-50%, -50%);
  top: 50%;
  left: 50%;
  border-radius: 0.5em;
  box-shadow: 0.6em 1.2em 3em rgba(0, 0, 0, 0.25);
}
img {
  width: 100%;
  margin-top: 1.25em;
}
#playlist {
  float: right;
}
.song-details {
  font-family: "Poppins", sans-serif;
  text-align: center;
}
.song-details #song-name {
  font-size: 1.3em;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.song-details #song-artist {
  font-size: 0.8em;
}
.player-options {
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 0 1.25em;
  margin: 1.25em 0 0.6em 0;
}
.music-player button {
  border: none;
  background-color: transparent;
}
#play,
#pause {
  height: 2.5em;
  width: 2.5em;
  font-size: 1.8em;
  background-color: #2887e3;
  color: #ffffff;
  border-radius: 50%;
}
#prev,
#next {
  color: #16191e;
  font-size: 1.4em;
}
#shuffle,
#repeat {
  color: #949494;
  font-size: 1em;
}
.hide {
  display: none;
}
#progress-bar {
  position: relative;
  width: 100%;
  height: 0.3em;
  background-color: #eeeeee;
  margin: 1em 0;
  border-radius: 0.18em;
  cursor: pointer;
}
#current-progress {
  position: absolute;
  left: 0;
  top: 0;
  display: inline-block;
  height: 100%;
  width: 20%;
  background-color: #2887e3;
  border-radius: 0.18em;
}
.time-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: "Roboto Mono", monospace;
}
#playlist-container {
  background-color: #ffffff;
  position: absolute;
  width: 100%;
  height: 100%;
  transform: translate(-50%, -50%);
  top: 50%;
  left: 50%;
  border-radius: 0.6em;
  padding: 2em 1em;
  font-family: "Poppins", sans-serif;
}
#close-button {
  background-color: transparent;
  border: none;
  height: 2em;
  width: 2em;
  cursor: pointer;
  margin-left: 90%;
}
ul {
  list-style-type: none;
}
li {
  display: flex;
  align-items: center;
  margin: 1em 0;
  cursor: pointer;
}
.playlist-song-details {
  margin-left: 1em;
}
.playlist-song-details > span {
  display: block;
}
#playlist-song-artist-album {
  color: #949494;
  font-size: 0.8em;
}
button.active i {
  color: #2887e3;
}
@media screen and (max-width: 450px) {
  .music-player {
    font-size: 14px;
  }
}

.playlist-image-container {
  width: 3em;
}

Javascript:

Lastly, we implement the functionality using javascript. Once again, copy the code below and paste it into your script file. We create the music player in 15 easy steps. These steps are:

Create Initial References
Create An Array For Song List
Detect If It Is A Touch Device
Format Time
A Function To Set Song
Function To Play Song
Implement Function To Toggle Repeat Mode
Function To Play Next Song
Function To Pause Song
Create Function To Play Previous Song
Function To Toggle Shuffle Mode
Adding Event Listener to Progress Bar
Updating Progress Bar and Time
Function To Create Playlist
Function To Show & Hide Playlist

const prevButton = document.getElementById("prev");
const nextButton = document.getElementById("next");
const repeatButton = document.getElementById("repeat");
const shuffleButton = document.getElementById("shuffle");
const audio = document.getElementById("audio");
const songImage = document.getElementById("song-image");
const songName = document.getElementById("song-name");
const songArtist = document.getElementById("song-artist");
const pauseButton = document.getElementById("pause");
const playButton = document.getElementById("play");
const playlistButton = document.getElementById("playlist");
const maxDuration = document.getElementById("max-duration");
const currentTimeRef = document.getElementById("current-time");
const progressBar = document.getElementById("progress-bar");
const playlistContainer = document.getElementById("playlist-container");
const closeButton = document.getElementById("close-button");
const playlistSongs = document.getElementById("playlist-songs");
const currentProgress = document.getElementById("current-progress");

//index for songs
let index;

//initially loop=true
let loop = true;

const songsList = [
  {
    name: "Make Me Move",
    link: "make-me-move.mp3",
    artist: "Culture Code",
    image: "make-me-move.jpg",
  },
  {
    name: "Where We Started",
    link: "where-we-started.mp3",
    artist: "Lost Sky",
    image: "where-we-started.jpg",
  },
  {
    name: "On & On",
    link: "on-on.mp3",
    artist: "Cartoon",
    image: "on-on.jpg",
  },
  {
    name: "Throne",
    link: "throne.mp3",
    artist: "Rival",
    image: "throne.jpg",
  },
  {
    name: "Need You Now",
    link: "need-you-now.mp3",
    artist: "Venemy",
    image: "need-you-now.jpg",
  },
];

//events object
let events = {
  mouse: {
    click: "click",
  },
  touch: {
    click: "touchstart",
  },
};

let deviceType = "";

//Detect touch device

const isTouchDevice = () => {
  try {
    //We try to create TouchEvent(it would fail for desktops and throw error)
    document.createEvent("TouchEvent");
    deviceType = "touch";
    return true;
  } catch (e) {
    deviceType = "mouse";
    return false;
  }
};

//Format time (convert ms to seconds, minutes and add 0 id less than 10)
const timeFormatter = (timeInput) => {
  let minute = Math.floor(timeInput / 60);
  minute = minute < 10 ? "0" + minute : minute;
  let second = Math.floor(timeInput % 60);
  second = second < 10 ? "0" + second : second;
  return `${minute}:${second}`;
};

//set song
const setSong = (arrayIndex) => {
  //this extracts all the variables from the object
  let { name, link, artist, image } = songsList[arrayIndex];
  audio.src = link;
  songName.innerHTML = name;
  songArtist.innerHTML = artist;
  songImage.src = image;
  //display duration when metadata loads
  audio.onloadedmetadata = () => {
    maxDuration.innerText = timeFormatter(audio.duration);
  };
};

//play song
const playAudio = () => {
  audio.play();
  pauseButton.classList.remove("hide");
  playButton.classList.add("hide");
};

//repeat button
repeatButton.addEventListener("click", () => {
  if (repeatButton.classList.contains("active")) {
    repeatButton.classList.remove("active");
    audio.loop = false;
    console.log("repeat off");
  } else {
    repeatButton.classList.add("active");
    audio.loop = true;
    console.log("repeat on");
  }
});

//Next song
const nextSong = () => {
  //if loop is true then continue in normal order
  if (loop) {
    if (index == songsList.length - 1) {
      //If last song is being played
      index = 0;
    } else {
      index += 1;
    }
    setSong(index);

    playAudio();
  } else {
    //else find a random index and play that song
    let randIndex = Math.floor(Math.random() * songsList.length);
    console.log(randIndex);
    setSong(randIndex);
    playAudio();
  }
};

//pause song
const pauseAudio = () => {
  audio.pause();
  pauseButton.classList.add("hide");
  playButton.classList.remove("hide");
};

//previous song ( you can't go back to a randomly played song)
const previousSong = () => {
  if (index > 0) {
    pauseAudio();
    index -= 1;
  } else {
    //if first song is being played
    index = songsList.length - 1;
  }
  setSong(index);
  playAudio();
};

//next song when current song ends
audio.onended = () => {
  nextSong();
};

//Shuffle songs
shuffleButton.addEventListener("click", () => {
  if (shuffleButton.classList.contains("active")) {
    shuffleButton.classList.remove("active");
    loop = true;
    console.log("shuffle off");
  } else {
    shuffleButton.classList.add("active");
    loop = false;
    console.log("shuffle on");
  }
});

//play button
playButton.addEventListener("click", playAudio);

//next button
nextButton.addEventListener("click", nextSong);

//pause button
pauseButton.addEventListener("click", pauseAudio);

//prev button
prevButton.addEventListener("click", previousSong);

//if user clicks on progress bar
isTouchDevice();
progressBar.addEventListener(events[deviceType].click, (event) => {
  //start of progressBar
  let coordStart = progressBar.getBoundingClientRect().left;
  //mouse click position
  let coordEnd = !isTouchDevice() ? event.clientX : event.touches[0].clientX;
  let progress = (coordEnd - coordStart) / progressBar.offsetWidth;

  //set width to progress
  currentProgress.style.width = progress * 100 + "%";

  //set time
  audio.currentTime = progress * audio.duration;

  //play
  audio.play();
  pauseButton.classList.remove("hide");
  playButton.classList.add("hide");
});

//update progress every second
setInterval(() => {
  currentTimeRef.innerHTML = timeFormatter(audio.currentTime);
  currentProgress.style.width =
    (audio.currentTime / audio.duration.toFixed(3)) * 100 + "%";
});

//update time
audio.addEventListener("timeupdate", () => {
  currentTimeRef.innerText = timeFormatter(audio.currentTime);
});

//Creates playlist
const initializePlaylist = () => {
  for (let i in songsList) {
    playlistSongs.innerHTML += `<li class='playlistSong' onclick='setSong(${i})'>
            <div class="playlist-image-container">
                <img src="${songsList[i].image}"/>
            </div>
            <div class="playlist-song-details">
                <span id="playlist-song-name">
                    ${songsList[i].name}
                </span>
                <span id="playlist-song-artist-album">
                    ${songsList[i].artist}
                </span>
            </div>
        </li>`;
  }
};

//display playlist
playlistButton.addEventListener("click", () => {
  playlistContainer.classList.remove("hide");
});

//hide playlist
closeButton.addEventListener("click", () => {
  playlistContainer.classList.add("hide");
});

window.onload = () => {
  //initially first song
  index = 0;
  setSong(index);
  //create playlist
  initializePlaylist();
};

Create Custom Music Player in HTML CSS & JavaScript

Build a Music Player | Vanilla JavaScript

Build a Music Player with HTML CSS & JavaScript

Create A Music Website Using HTML CSS JAVASCRIPT | Add Music In HTML Website

#html #css #javascript

Annalise Hyatt

1597970940

Create a Custom JavaScript Audio Player [Part 2] With Progress Bar

In part 2 of our JavaScript audio player tutorial, we’ll add some more features as a progress bar component which shows time elapsed, seek bar and next and previous buttons.

Thanks to @Pendona Music for the suggestions!

👉 Get the source code here: https://github.com/codebubb/javascript-audio-player (checkout the master branch for starting point and progress–bar branch for the completed project

#javascript #progress bar #javascript audio

Jeromy Lowe

1595582820