How to Create a Dropdown Menu with HTML, CSS and JavaScript

Dropdown Menu with HTML, CSS, and JavaScript - How to create a dropdown menu using HTML, CSS, JS

In this tutorial, we will build a Dropdown Menu. The project will be created based on HTML, CSS, and JavaScript

How to Create a Dropdown Menu with CSS and JavaScript

In this tutorial you will learn how to create a simple dropdown menu with vanilla Javascript, HTML and CSS. We will walk through the HTML, CSS and Javascript code, but paying more attention to the programming, since this is a JS tutorial. We’ll use just plain JS and CSS, with no frameworks or preprocessors. The only (kind-of) exception will be importing the Font Awesome CSS file because we’ll use one of its icons.

This is targeted to developers that have an average understanding of HTML, CSS and JS. I tried to make it as clean as possible, but I won’t focus too much on details here. I hope you all enjoy.


This is how the code result looks like:

Initial screen:

Dropdown opened:


Dropdown with option selected:



In this section, we will discuss the implementation of the HTML code for the demo page. To start off, let’s see the <head> code

<!DOCTYPE html>
<html lang="en">
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title>Dropdown Example</title>

	<link rel="stylesheet" href="'-awesome/4.7.0/css/font-awesome.min.css">
	<link rel="stylesheet" href="styles.css">

This is basically HTML head boilerplate, with the exception of the link tags loading the two CSS stylesheets we will use in this tutorial: the Font Awesome styles, and the styles.css file, where we will define this page’s styles.

Then, there’s the rest of the HTML file, the body:

	<div class='dropdown'>
		<div class='title pointerCursor'>Select an option <i class="fa fa-angle-right"></i></div>
		<div class='menu pointerCursor hide'>
			<div class='option' id='option1'>Option 1</div>
			<div class='option' id='option2'>Option 2</div>
			<div class='option' id='option3'>Option 3</div>
			<div class='option' id='option4'>Option 4</div>

	<span id='result'>The result is: </span>

This section can be divided into 3 main parts:

  • The .dropdown div, where the dropdown element’s structure will be defined.
  • The #result element, that will contain the selected option by the user, from the dropdown element.
  • The script written into the <script> tag. Its implementation is hidden here, because its details will be explained in the last section of this tutorial.

The dropdown element is a div containing a title and menu elements. The former just defines what text will be presented on the element before any option is selected and the latter will define the options that will be selectable by the element.

The result element is there just to show you what option is currently selected.


Below you can check the full css code out. As you can see it makes use of CSS3 transition and transform constructs.

Please pay attention to the .dropdown classes definitions. These are used to define the layout for the dropdown container component as well as its inner elements, such as the .title and its .option‘s.

	font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;

.hide {
    max-height: 0 !important;

	border: 0.1em solid black;
	width: 10em;
	margin-bottom: 1em;

.dropdown .title{
	margin: .3em .3em .3em .3em;	
	width: 100%;

.dropdown .title .fa-angle-right{
	float: right;
	margin-right: .7em;
	transition: transform .3s;

.dropdown .menu{
	transition: max-height .5s ease-out;
	max-height: 20em;
	overflow: hidden;

.dropdown .menu .option{
	margin: .3em .3em .3em .3em;
	margin-top: 0.3em;

.dropdown .menu .option:hover{
	background: rgba(0,0,0,0.2);

	cursor: pointer;

	transform: rotate(90deg);


Now we’ll see how the Javascript part is implemented. We’ll first go through the function definitions and then the code that calls these functions to make the dropdown actions happen.

Basically, there are 3 actions that take place depending on what the user interaction is, as their listeners are added to the DOM elements:

  1. Clicking on the dropdown element
  2. Selecting one of the dropdown options
  3. Changing the currently selected option

I’d like to make it clear that we are using arrow functions( () => {} ) and the const keyword, which are ES6 features. You’re probably good if you’re using a recent version of your browser, but keep that in mind.

1. Clicking on the dropdown element

function toggleClass(elem,className){
	if (elem.className.indexOf(className) !== -1){
		elem.className = elem.className.replace(className,'');
		elem.className = elem.className.replace(/\s+/g,' ') + 	' ' + className;
	return elem;

function toggleDisplay(elem){
	const curDisplayStyle =;			
	if (curDisplayStyle === 'none' || curDisplayStyle === ''){ = 'block';
	else{ = 'none';

function toggleMenuDisplay(e){
	const dropdown = e.currentTarget.parentNode;
	const menu = dropdown.querySelector('.menu');
	const icon = dropdown.querySelector('.fa-angle-right');


When the dropdown element is clicked, it opens(if it is closed) or closes(if it is opened). This happens by binding toggleMenuDisplay to the click event listener on the dropdown element. This function toggles the display of its menu element by the use of the toggleDisplay and toggleClass functions.

2. Selecting one of the dropdown options

function handleOptionSelected(e){
	toggleClass(, 'hide');			

	const id =;
	const newValue = + ' ';
	const titleElem = document.querySelector('.dropdown .title');
	const icon = document.querySelector('.dropdown .title .fa');

	titleElem.textContent = newValue;
	//trigger custom event
	document.querySelector('.dropdown .title').dispatchEvent(new Event('change'));
	//setTimeout is used so transition is properly shown
	setTimeout(() => toggleClass(icon,'rotate-90',0));

3. Changing the currently selected option

function handleTitleChange(e){
	const result = document.getElementById('result');

	result.innerHTML = 'The result is: ' +;

The function handleTitleChange is bound to the custom change event on the .title element, to change the #result element content whenever the title element changes. This event’s triggering is done on the previous section.

Main code

//get elements
const dropdownTitle = document.querySelector('.dropdown .title');
const dropdownOptions = document.querySelectorAll('.dropdown .option');

//bind listeners to these elements
dropdownTitle.addEventListener('click', toggleMenuDisplay);
dropdownOptions.forEach(option => option.addEventListener('click',handleOptionSelected));
document.querySelector('.dropdown .title').addEventListener('change',handleTitleChange);

In the main section there’s just some simple code to get the dropdown’s title and options elements to bind to them the events discussed on the last section.


This application’s full code and demo can be found here.


#css #html #javascript #programming #webdev 

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How to Create a Dropdown Menu with HTML, CSS and JavaScript
anita maity

anita maity


Sidebar Menu Using Only HTML and CSS | Side Navigation Bar

how to create a Sidebar Menu using HTML and CSS only. Previously I have shared a Responsive Navigation Menu Bar using HTML & CSS only, now it’s time to create a Side Navigation Menu Bar that slides from the left or right side.


#sidebar menu using html css #side navigation menu html css #css side navigation menu bar #,pure css sidebar menu #side menu bar html css #side menu bar using html css

Easter  Deckow

Easter Deckow


PyTumblr: A Python Tumblr API v2 Client



Install via pip:

$ pip install pytumblr

Install from source:

$ git clone
$ cd pytumblr
$ python install


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(
) # Grabs the current user information

Two easy ways to get your credentials to are:

  1. The built-in tool (if you already have a consumer key & secret)
  2. The Tumblr API console at
  3. Get sample login code at

Supported Methods

User Methods # 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('') # follow a blog
client.unfollow('') # unfollow a blog, 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"],

#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]",

#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="",
                   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="")

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.",

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

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

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 test

Author: tumblr
Source Code:
License: Apache-2.0 license

#python #api 

Web Monster

Web Monster


Creating a Responsive Blog with HTML, CSS, and JavaScript

Are you looking to build a professional-looking blog with HTML, CSS, and JavaScript? In this video 

tutorial, we'll walk you through the process of designing and developing a blog from scratch, step-by-step. 


From creating the layout of your blog with HTML and CSS to adding interactivity and functionality with JavaScript, 

we'll cover everything you need to know to create a fully functional blog. Whether you're a blogger, 

web developer, or simply looking to learn new skills, this tutorial is for you! 

We'll also provide some tips and tricks along the way to help you optimize your blog for search engines, improve your website's accessibility, and enhance the user experience. 

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So, if you're ready to start building your own blog, this video is the perfect place to start. Be sure to like this video and subscribe to our channel for more web development tutorials and tips!


Link of The Video :

Lyda  White

Lyda White


How to Image Uploader with Preview || Html CSS JavaScript

Image Uploader with Preview || Html CSS JavaScript || #html #css #javascript #coding

#html #css #javascript 

Saurabh Kumar

Saurabh Kumar


Personal Portfolio Website Using Html Css and Javascript

#HTML #CSS #JavaScript 

In this tutorial we are going to make a personal Portfolio in this website there are six section Home, About, Services,Portfolio , Skills, and Contact the main features of this is dark/light mode function

 ∎ Download Source codes -

Features : -

  • Fully Responsive 
  • Dark mode/light mode
  • Browser compatibility
  • Social Media Icon
  • and many more

#css  #html  #javascript