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JavaScript Form Validation Tutorial for Beginners | Create Client-Side Form Validation Project
Javascript form validation tutorial for beginners is a great way to practice the use of HTML,CSS and JavaScript project. WE will create a client-side form validation project using Font awesome icons for success and error states.
GitHub: https://github.com/sammy007-debug/Validation-Form
- 00:00 - Intro
- 01:29 - HTML
- 12:52 - CSS
- 40:15 - JS
#javascript #web-development #programming #developer
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PyTumblr: A Python Tumblr API v2 Client
PyTumblr
Installation
Install via pip:
$ pip install pytumblrInstall from source:
$ git clone https://github.com/tumblr/pytumblr.git
$ cd pytumblr
$ python setup.py installUsage
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 informationTwo easy ways to get your credentials to are:
- The built-in
interactive_console.pytool (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 postBlog 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 blogPost 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.pyand 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 testAuthor: tumblr
Source Code: https://github.com/tumblr/pytumblr
License: Apache-2.0 license
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Top Android Projects with Source Code
Android Projects with Source Code – Your entry pass into the world of Android
Hello Everyone, welcome to this article, which is going to be really important to all those who’re in dilemma for their projects and the project submissions. This article is also going to help you if you’re an enthusiast looking forward to explore and enhance your Android skills. The reason is that we’re here to provide you the best ideas of Android Project with source code that you can choose as per your choice.
These project ideas are simple suggestions to help you deal with the difficulty of choosing the correct projects. In this article, we’ll see the project ideas from beginners level and later we’ll move on to intermediate to advance.
Android Projects with Source Code
Before working on real-time projects, it is recommended to create a sample hello world project in android studio and get a flavor of project creation as well as execution: Create your first android project
Android Projects for beginners
1. Calculator
Android Project: A calculator will be an easy application if you have just learned Android and coding for Java. This Application will simply take the input values and the operation to be performed from the users. After taking the input it’ll return the results to them on the screen. This is a really easy application and doesn’t need use of any particular package.
To make a calculator you’d need Android IDE, Kotlin/Java for coding, and for layout of your application, you’d need XML or JSON. For this, coding would be the same as that in any language, but in the form of an application. Not to forget creating a calculator initially will increase your logical thinking.
Once the user installs the calculator, they’re ready to use it even without the internet. They’ll enter the values, and the application will show them the value after performing the given operations on the entered operands.
Source Code: Simple Calculator Project
2. A Reminder App
Android Project: This is a good project for beginners. A Reminder App can help you set reminders for different events that you have throughout the day. It’ll help you stay updated with all your tasks for the day. It can be useful for all those who are not so good at organizing their plans and forget easily. This would be a simple application just whose task would be just to remind you of something at a particular time.
To make a Reminder App you need to code in Kotlin/Java and design the layout using XML or JSON. For the functionality of the app, you’d need to make use of AlarmManager Class and Notifications in Android.
In this, the user would be able to set reminders and time in the application. Users can schedule reminders that would remind them to drink water again and again throughout the day. Or to remind them of their medications.
3. Quiz Application
Android Project: Another beginner’s level project Idea can be a Quiz Application in android. Here you can provide the users with Quiz on various general knowledge topics. These practices will ensure that you’re able to set the layouts properly and slowly increase your pace of learning the Android application development. In this you’ll learn to use various Layout components at the same time understanding them better.
To make a quiz application you’ll need to code in Java and set layouts using xml or java whichever you prefer. You can also use JSON for the layouts whichever preferable.
In the app, questions would be asked and answers would be shown as multiple choices. The user selects the answer and gets shown on the screen if the answers are correct. In the end the final marks would be shown to the users.
4. Simple Tic-Tac-Toe
Android Project: Tic-Tac-Toe is a nice game, I guess most of you all are well aware of it. This will be a game for two players. In this android game, users would be putting X and O in the given 9 parts of a box one by one. The first player to arrange X or O in an adjacent line of three wins.
To build this game, you’d need Java and XML for Android Studio. And simply apply the logic on that. This game will have a set of three matches. So, it’ll also have a scoreboard. This scoreboard will show the final result at the end of one complete set.
Upon entering the game they’ll enter their names. And that’s when the game begins. They’ll touch one of the empty boxes present there and get their turn one by one. At the end of the game, there would be a winner declared.
Source Code: Tic Tac Toe Game Project
5. Stopwatch
Android Project: A stopwatch is another simple android project idea that will work the same as a normal handheld timepiece that measures the time elapsed between its activation and deactivation. This application will have three buttons that are: start, stop, and hold.
This application would need to use Java and XML. For this application, we need to set the timer properly as it is initially set to milliseconds, and that should be converted to minutes and then hours properly. The users can use this application and all they’d need to do is, start the stopwatch and then stop it when they are done. They can also pause the timer and continue it again when they like.
6. To Do App
Android Project: This is another very simple project idea for you as a beginner. This application as the name suggests will be a To-Do list holding app. It’ll store the users schedules and their upcoming meetings or events. In this application, users will be enabled to write their important notes as well. To make it safe, provide a login page before the user can access it.
So, this app will have a login page, sign-up page, logout system, and the area to write their tasks, events, or important notes. You can build it in android studio using Java and XML at ease. Using XML you can build the user interface as user-friendly as you can. And to store the users’ data, you can use SQLite enabling the users to even delete the data permanently.
Now for users, they will sign up and get access to the write section. Here the users can note down the things and store them permanently. Users can also alter the data or delete them. Finally, they can logout and also, login again and again whenever they like.
7. Roman to decimal converter
Android Project: This app is aimed at the conversion of Roman numbers to their significant decimal number. It’ll help to check the meaning of the roman numbers. Moreover, it will be easy to develop and will help you get your hands on coding and Android.
You need to use Android Studio, Java for coding and XML for interface. The application will take input from the users and convert them to decimal. Once it converts the Roman no. into decimal, it will show the results on the screen.
The users are supposed to just enter the Roman Number and they’ll get the decimal values on the screen. This can be a good android project for final year students.
8. Virtual Dice Roller
Android Project: Well, coming to this part that is Virtual Dice or a random no. generator. It is another simple but interesting app for computer science students. The only task that it would need to do would be to generate a number randomly. This can help people who’re often confused between two or more things.
Using a simple random number generator you can actually create something as good as this. All you’d need to do is get you hands-on OnClick listeners. And a good layout would be cherry on the cake.
The user’s task would be to set the range of the numbers and then click on the roll button. And the app will show them a randomly generated number. Isn’t it interesting ? Try soon!
9. A Scientific Calculator App
Android Project: This application is very important for you as a beginner as it will let you use your logical thinking and improve your programming skills. This is a scientific calculator that will help the users to do various calculations at ease.
To make this application you’d need to use Android Studio. Here you’d need to use arithmetic logics for the calculations. The user would need to give input to the application that will be in terms of numbers. After that, the user will give the operator as an input. Then the Application will calculate and generate the result on the user screen.
10. SMS App
Android Project: An SMS app is another easy but effective idea. It will let you send the SMS to various no. just in the same way as you use the default messaging application in your phone. This project will help you with better understanding of SMSManager in Android.
For this application, you would need to implement Java class SMSManager in Android. For the Layout you can use XML or JSON. Implementing SMSManager into the app is an easy task, so you would love this.
The user would be provided with the facility to text to whichever number they wish also, they’d be able to choose the numbers from the contact list. Another thing would be the Textbox, where they’ll enter their message. Once the message is entered they can happily click on the send button.
#android tutorials #android application final year project #android mini projects #android project for beginners #android project ideas #android project ideas for beginners #android projects #android projects for students #android projects with source code #android topics list #intermediate android projects #real-time android projects
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Laravel 8 Form Validation Tutorial
Laravel 8 form validation example. In this tutorial, i will show you how to submit form with validation in laravel 8.
And you will learn how to store form data in laravel 8. Also validate form data before store to db.
How to Validate Form Data in Laravel 8
- Step 1 – Install Laravel 8 Application
- Step 2 – Configuring Database using Env File
- Step 3 – Create Model & Migration File For Form
- Step 4 – Create Routes
- Step 5 – Creating Controller
- Step 6 – Create Blade File For Form
- Step 7 – Start Development Server
- Step 8 – Run Laravel 8 Form Validation App On Browser
https://laratutorials.com/laravel-8-form-validation-example-tutorial/
#laravel 8 form validation #laravel 8 form validation tutorial #laravel 8 form validation - google search #how to validate form data in laravel 8 #form validation in laravel 8
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JavaScript Shopping Cart - Javascript Project for Beginners
#shopping cart javascript #hopping cart with javascript #javascript shopping cart tutorial for beginners #javascript cart project #javascript tutorial #shopping cart
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How to Create a Client-Side Form Validation using JavaScript
In this video, we will create a client-side form validation using JavaScript. I'll only use Vanilla JavaScript and no external 3rd party dependencies. The aim is to help beginners to do form validation and understand how the whole process works.
Timestamps:
00:00 Intro
00:26 HTML
03:33 CSS
05:35 Javascript
Source code: https://codepen.io/javascriptacademy-stash/pen/oNeNMNR
HTML
Let's start with the HTML markup. We'll have a container div, that we'll use to position and style our form. Inside that, not surprisingly, we'll create a form, we also set an id for it, and set the action to / since we don't really want to submit this form.
We'll create four input fields, for the username, email, password, and password confirmation. For styling and control purposes we'll wrap these input tags into divs with the class input control. Each of these input controls will contain a label, an input, and a div with the class error. Every input should have an id and name attribute. The label's should have a matching for property with the corresponding input tag's name attribute. For the input type we will use text for the username and email, and use password for the password and the password confirmation. The div with the error class will hold the error messages for the specific input field. It will be empty for now, we will modify it from javascript.
Lastly, we have to add a button to "submit" our form. In this example we won't really submit the form just simulate it. For the submit button I'll use a button with a type of submit.
<div class="container">
<form id="form" action="/">
<h1>Registration</h1>
<div class="input-control">
<label for="username">Username</label>
<input id="username" name="username" type="text">
<div class="error"></div>
</div>
<div class="input-control">
<label for="email">Email</label>
<input id="email" name="email" type="text">
<div class="error"></div>
</div>
<div class="input-control">
<label for="password">Password</label>
<input id="password"name="password" type="password">
<div class="error"></div>
</div>
<div class="input-control">
<label for="password2">Password again</label>
<input id="password2"name="password2" type="password">
<div class="error"></div>
</div>
<button type="submit">Sign Up</button>
</form>
</div>That is the HTML markup that we need for our form. Let's style it a bit with CSS.
CSS
We'll give a simple clean spacious design for this tutorial. I'll set a linear gradient as the background and I'll use a custom google font, that you can install from here.
body {
background: linear-gradient(to right, #0f2027, #203a43, #2c5364);
font-family: 'Poppins', sans-serif;
}We'll give a fix width to our form, and center it with margins, also I'll give it a top margin to move it down a bit vertically. To have more space we apply 20px of padding. We'll set a fixed font size, a light background color and also set a border radius to have rounded corners.
#form {
width: 300px;
margin: 20vh auto 0 auto;
padding: 20px;
background-color: whitesmoke;
border-radius: 4px;
font-size: 12px;
}For the form title, we'll use a dark text color, and center it horizontally using text-align: center. The submit button should stand out so we'll use a blue background color, and white text color. We also remove the browser default borders and give it a little border-radius. We'll give it a little spacing with paddings and margins, and make it full-width by applying 100% width.
#form h1 {
color: #0f2027;
text-align: center;
}
#form button {
padding: 10px;
margin-top: 10px;
width: 100%;
color: white;
background-color: rgb(41, 57, 194);
border: none;
border-radius: 4px;
}To have the inputs stacked below each other we'll use flexbox. To do that we'll set display: flex; and flex-direction: column. For the inputs we'll set a grey border, with a little border-radius. We'll set the display property to block, and make them full-width, by applying width 100%. We'll also set a little padding, so it'll be more spacious. I'll also remove the outline when the input is in focus, by setting outline: 0.
.input-control {
display: flex;
flex-direction: column;
}
.input-control input {
border: 2px solid #f0f0f0;
border-radius: 4px;
display: block;
font-size: 12px;
padding: 10px;
width: 100%;
}
.input-control input:focus {
outline: 0;
}We'll use two classes ("success" and "error") to give visual feedback to the user on whether the input's value is valid or not. We'll apply these classes from javascript to the input-control div which contains the specific input field. When the success class is present we will set a green border color, otherwise if error is present we'll use a red border color instead. For the error div we'll use a smaller font-size and a red color to show the error messages.
.input-control.success input {
border-color: #09c372;
}
.input-control.error input {
border-color: #ff3860;
}
.input-control .error {
color: #ff3860;
font-size: 9px;
height: 13px;
}Let's do the validation in javascript next!
Javascript
The first thing we have to do is to save references for the form, and the input fields. As we gave id for every input and the form we can easily to do by using getElementById.
const form = document.getElementById('form');
const username = document.getElementById('username');
const email = document.getElementById('email');
const password = document.getElementById('password');
const password2 = document.getElementById('password2');To prevent the form for automatically submit we have to attach and event listener to our form's submit event. In this event handler function we have to call preventDefault() function to prevent the form from submitting automatically. Instead of submitting we'll call the validateInputs function, which will validate the inputs and if we want to we can submit the form in there after every check passes, but we won't do that in this tutorial. We'll create this validateInputs shortly.
form.addEventListener('submit', e => {
e.preventDefault();
validateInputs();
});We'll also create two helper functions: setError, setSuccess. We'll use these helper functions to set the error or success states of the input controls. Let's start with the setError one. It receives two parameters: element, and message. The element will be the input element that is in the specific input-control. So first we have to get the input control parent div. We'll save it into the inputControl variable, and get the input control div by using the parent property of the input element. Next we have to gather the error div, and save it into a variable. We can do that by querying the input control with the error class.
Now we have to set the error div's innerText to be the message that we got in parameters, and remove the success class from the input control (if it exists) and add the error class.
const setError = (element, message) => {
const inputControl = element.parentElement;
const errorDisplay = inputControl.querySelector('.error');
errorDisplay.innerText = message;
inputControl.classList.add('error');
inputControl.classList.remove('success')
}The setSuccess method will be really similar. The first difference is that it won't receive a message as a parameter. We have to clear the error display by setting its innerText to an empty string. Lastly we have to reverse the class application. We'll add the success class to the inputControl and remove the error class (if present).
const setSuccess = element => {
const inputControl = element.parentElement;
const errorDisplay = inputControl.querySelector('.error');
errorDisplay.innerText = '';
inputControl.classList.add('success');
inputControl.classList.remove('error');
};We will create one last helper function to validate emails. This is an optional step, if you don't want to use regular expressions, feel free to just set the input type of the email field to email. The isValidEmail function will take a string as a parameter and use this weird looking regular expression to check whether it is a valid email or not. We'll use String.test() function to test the string against the regex. We'll also convert the email to a string and make it lowercase.
const isValidEmail = email => {
const re = /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
return re.test(String(email).toLowerCase());
}Now we should create the validator validateInputs function. First we will get the value of all the input fields. We can do that by getting the value property's value of the input field references. We'll call the String.trim() function to remove the trailing empty spaces (if any) from the start and end of the values.
Then we can start validating inputs. We'll use if, else statements to do the validation. For the username we will check whether if it is empty or not, by comparing the value with an empty string. If it empty, we'll call the setError function and provide the username element to it, with our error message. Otherwise we'll call the setSuccess method with the username element. Now we have to do this for the other input fields, but the approach will be the same.
const validateInputs = () => {
const usernameValue = username.value.trim();
const emailValue = email.value.trim();
const passwordValue = password.value.trim();
const password2Value = password2.value.trim();
if(usernameValue === '') {
setError(username, 'Username is required');
} else {
setSuccess(username);
}
};For the email we'll check if it is provided or not, and set an error if it is empty. If it is not empty we'll check whether it is a valid email address, and if not we'll set an error, otherwise we set success for the field.
if(emailValue === '') {
setError(email, 'Email is required');
} else if (!isValidEmail(emailValue)) {
setError(email, 'Provide a valid email address');
} else {
setSuccess(email);
}
}For the password we'll check whether it is empty or not, and if it is not empty we'll check if it is longer than 7 characters. If not, well set an error, otherwise we'll set it as success.
if(passwordValue === '') {
setError(password, 'Password is required');
} else if (passwordValue.length < 8 ) {
setError(password, 'Password must be at least 8 character.')
} else {
setSuccess(password);
}
}For the password confirmation we'll check if it is empty, and we should also check if the password confirmation's value is equal to the password's value.
if(password2Value === '') {
setError(password2, 'Please confirm your password');
} else if (password2Value !== passwordValue) {
setError(password2, "Passwords doesn't match");
} else {
setSuccess(password2);
}
}Now we have every input validated, if we wanted to we could submit our form now to a specific endpoint.
Good job now you have a working form validation Javascript. Please note that you always have to validate the form inputs on the server-side as client-side validation can be easily bypassed. There are way more advanced form validation methods and libraries that we use in modern web development, but this project is a really good way to start and learn the fundamentals.
#javascript