๐ฐ JavaScript - The Advanced Concepts
โฑ 25.5 Hours ๐ฆ 228 Lessons
Learn modern, advanced JavaScript practices to become a top 10% JavaScript Developer. Fun fact: this course is even used as a reference for some FAANG company interview processes.
Taught By: Andrei Neagoie
Download Full Course:๐
โฑ 25.5 Hours ๐ฆ 228 Lessons
Learn modern, advanced JavaScript practices to become a top 10% JavaScript Developer. Fun fact: this course is even used as a reference for some FAANG company interview processes.
Taught By: Andrei Neagoie
Download Full Course:๐
๐13๐ฅฐ6๐5๐ฅ4๐ฑ1
How to enter into Data Science
๐Start with the basics: Learn programming languages like Python and R to master data analysis and machine learning techniques. Familiarize yourself with tools such as TensorFlow, sci-kit-learn, and Tableau to build a strong foundation.
๐Choose your target field: From healthcare to finance, marketing, and more, data scientists play a pivotal role in extracting valuable insights from data. You should choose which field you want to become a data scientist in and start learning more about it.
๐Build a portfolio: Start building small projects and add them to your portfolio. This will help you build credibility and showcase your skills.
๐Start with the basics: Learn programming languages like Python and R to master data analysis and machine learning techniques. Familiarize yourself with tools such as TensorFlow, sci-kit-learn, and Tableau to build a strong foundation.
๐Choose your target field: From healthcare to finance, marketing, and more, data scientists play a pivotal role in extracting valuable insights from data. You should choose which field you want to become a data scientist in and start learning more about it.
๐Build a portfolio: Start building small projects and add them to your portfolio. This will help you build credibility and showcase your skills.
๐3โค1
Frequently asked SQL interview questions for Data Analyst/Data Engineer role-
1 - What is SQL and what are its main features?
2 - Order of writing SQL query?
3- Order of execution of SQL query?
4- What are some of the most common SQL commands?
5- Whatโs a primary key & foreign key?
6 - All types of joins and questions on their outputs?
7 - Explain all window functions and difference between them?
8 - What is stored procedure?
9 - Difference between stored procedure & Functions in SQL?
10 - What is trigger in SQL?
11 - Difference between where and having?
1 - What is SQL and what are its main features?
2 - Order of writing SQL query?
3- Order of execution of SQL query?
4- What are some of the most common SQL commands?
5- Whatโs a primary key & foreign key?
6 - All types of joins and questions on their outputs?
7 - Explain all window functions and difference between them?
8 - What is stored procedure?
9 - Difference between stored procedure & Functions in SQL?
10 - What is trigger in SQL?
11 - Difference between where and having?
๐1
LEGEND Form Project ๐
๐
-----------------------------------------------------
Complete Source Code ๐
-----------------------------------------------------
<html>
<head>
<style>
.outer{
margin:auto;
height:300px;
width:400px;
border:2px solid black;
position:relative
}
p{
margin-left:80px;
}
.in{
margin-left:80px;
padding:10px
}
#bt{
margin-top:20px;
position:absolute;
left:150px;
}
#bt:hover{
background:green;
font-size:13px;
cursor:pointer;
color:white;
}
</style>
<script>
function fa(){
if(a.value=="" || b.value==""){
f()
document.getElementById("a").style.border="3px solid red"
document.getElementById("b").style.border="3px solid red"
bt.value="Pahila data tak"
}
else{
document.getElementById("a").style.border="3px solid green"
document.getElementById("b").style.border="3px solid green"
bt.value="Ha thik ahe ata"
bt.style.left="120px";
}
}
flag=1
function f(){
if(flag==1){
bt.style.left="210px"
flag=2
}
else if(flag==2){
bt.style.left="80px"
flag=1
}
}
</script>
</head>
<body>
<div class="outer">
<h1 style="text-align:center">Legend form</h1>
<p>Enter Id</p>
<input class="in" type="text" placeholder="Enter id" id="a"/>
<p>Enter Confirm Pass</p>
<input class="in" type="password" placeholder="Enter password" id="b"/>
<br>
<input type="submit" onmouseenter="fa()" onclick="alert('waaaa')" id="bt" />
</div>
</body>
</html>
-----------------------------------------------------
Complete Source Code ๐
-----------------------------------------------------
<html>
<head>
<style>
.outer{
margin:auto;
height:300px;
width:400px;
border:2px solid black;
position:relative
}
p{
margin-left:80px;
}
.in{
margin-left:80px;
padding:10px
}
#bt{
margin-top:20px;
position:absolute;
left:150px;
}
#bt:hover{
background:green;
font-size:13px;
cursor:pointer;
color:white;
}
</style>
<script>
function fa(){
if(a.value=="" || b.value==""){
f()
document.getElementById("a").style.border="3px solid red"
document.getElementById("b").style.border="3px solid red"
bt.value="Pahila data tak"
}
else{
document.getElementById("a").style.border="3px solid green"
document.getElementById("b").style.border="3px solid green"
bt.value="Ha thik ahe ata"
bt.style.left="120px";
}
}
flag=1
function f(){
if(flag==1){
bt.style.left="210px"
flag=2
}
else if(flag==2){
bt.style.left="80px"
flag=1
}
}
</script>
</head>
<body>
<div class="outer">
<h1 style="text-align:center">Legend form</h1>
<p>Enter Id</p>
<input class="in" type="text" placeholder="Enter id" id="a"/>
<p>Enter Confirm Pass</p>
<input class="in" type="password" placeholder="Enter password" id="b"/>
<br>
<input type="submit" onmouseenter="fa()" onclick="alert('waaaa')" id="bt" />
</div>
</body>
</html>
๐2
Snake Game using Turtle in Python โ
Source Code ๐๐
# import required modules
import turtle
import time
import random
delay = 0.1
score = 0
high_score = 0
# Creating a window screen
wn = turtle.Screen()
wn.title("Snake Game")
wn.bgcolor("blue")
# the width and height can be put as user's choice
wn.setup(width=600, height=600)
wn.tracer(0)
# head of the snake
head = turtle.Turtle()
head.shape("square")
head.color("white")
head.penup()
head.goto(0, 0)
head.direction = "Stop"
# food in the game
food = turtle.Turtle()
colors = random.choice(['red', 'green', 'black'])
shapes = random.choice(['square', 'triangle', 'circle'])
food.speed(0)
food.shape(shapes)
food.color(colors)
food.penup()
food.goto(0, 100)
pen = turtle.Turtle()
pen.speed(0)
pen.shape("square")
pen.color("white")
pen.penup()
pen.hideturtle()
pen.goto(0, 250)
pen.write("Score : 0 High Score : 0", align="center",
font=("candara", 24, "bold"))
# assigning key directions
def group():
if head.direction != "down":
head.direction = "up"
def godown():
if head.direction != "up":
head.direction = "down"
def goleft():
if head.direction != "right":
head.direction = "left"
def goright():
if head.direction != "left":
head.direction = "right"
def move():
if head.direction == "up":
y = head.ycor()
head.sety(y+20)
if head.direction == "down":
y = head.ycor()
head.sety(y-20)
if head.direction == "left":
x = head.xcor()
head.setx(x-20)
if head.direction == "right":
x = head.xcor()
head.setx(x+20)
wn.listen()
wn.onkeypress(group, "w")
wn.onkeypress(godown, "s")
wn.onkeypress(goleft, "a")
wn.onkeypress(goright, "d")
segments = []
# By - https://t.me/+Bj5ezyc6mugzNjM1
# Main Gameplay
while True:
wn.update()
if head.xcor() > 290 or head.xcor() < -290 or head.ycor() > 290 or head.ycor() < -290:
time.sleep(1)
head.goto(0, 0)
head.direction = "Stop"
colors = random.choice(['red', 'blue', 'green'])
shapes = random.choice(['square', 'circle'])
for segment in segments:
segment.goto(1000, 1000)
segments.clear()
score = 0
delay = 0.1
pen.clear()
pen.write("Score : {} High Score : {} ".format(
score, high_score), align="center", font=("candara", 24, "bold"))
if head.distance(food) < 20:
x = random.randint(-270, 270)
y = random.randint(-270, 270)
food.goto(x, y)
# Adding segment
new_segment = turtle.Turtle()
new_segment.speed(0)
new_segment.shape("square")
new_segment.color("orange") # tail colour
new_segment.penup()
segments.append(new_segment)
delay -= 0.001
score += 10
if score > high_score:
high_score = score
pen.clear()
pen.write("Score : {} High Score : {} ".format(
score, high_score), align="center", font=("candara", 24, "bold"))
# Checking for head collisions with body segments
for index in range(len(segments)-1, 0, -1):
x = segments[index-1].xcor()
y = segments[index-1].ycor()
segments[index].goto(x, y)
if len(segments) > 0:
x = head.xcor()
y = head.ycor()
segments[0].goto(x, y)
move()
for segment in segments:
if segment.distance(head) < 20:
time.sleep(1)
head.goto(0, 0)
head.direction = "stop"
colors = random.choice(['red', 'blue', 'green'])
shapes = random.choice(['square', 'circle'])
for segment in segments:
segment.goto(1000, 1000)
segments.clear()
score = 0
delay = 0.1
pen.clear()
pen.write("Score : {} High Score : {} ".format(
score, high_score), align="center", font=("candara", 24, "bold"))
time.sleep(delay)
wn.mainloop()
# import required modules
import turtle
import time
import random
delay = 0.1
score = 0
high_score = 0
# Creating a window screen
wn = turtle.Screen()
wn.title("Snake Game")
wn.bgcolor("blue")
# the width and height can be put as user's choice
wn.setup(width=600, height=600)
wn.tracer(0)
# head of the snake
head = turtle.Turtle()
head.shape("square")
head.color("white")
head.penup()
head.goto(0, 0)
head.direction = "Stop"
# food in the game
food = turtle.Turtle()
colors = random.choice(['red', 'green', 'black'])
shapes = random.choice(['square', 'triangle', 'circle'])
food.speed(0)
food.shape(shapes)
food.color(colors)
food.penup()
food.goto(0, 100)
pen = turtle.Turtle()
pen.speed(0)
pen.shape("square")
pen.color("white")
pen.penup()
pen.hideturtle()
pen.goto(0, 250)
pen.write("Score : 0 High Score : 0", align="center",
font=("candara", 24, "bold"))
# assigning key directions
def group():
if head.direction != "down":
head.direction = "up"
def godown():
if head.direction != "up":
head.direction = "down"
def goleft():
if head.direction != "right":
head.direction = "left"
def goright():
if head.direction != "left":
head.direction = "right"
def move():
if head.direction == "up":
y = head.ycor()
head.sety(y+20)
if head.direction == "down":
y = head.ycor()
head.sety(y-20)
if head.direction == "left":
x = head.xcor()
head.setx(x-20)
if head.direction == "right":
x = head.xcor()
head.setx(x+20)
wn.listen()
wn.onkeypress(group, "w")
wn.onkeypress(godown, "s")
wn.onkeypress(goleft, "a")
wn.onkeypress(goright, "d")
segments = []
# By - https://t.me/+Bj5ezyc6mugzNjM1
# Main Gameplay
while True:
wn.update()
if head.xcor() > 290 or head.xcor() < -290 or head.ycor() > 290 or head.ycor() < -290:
time.sleep(1)
head.goto(0, 0)
head.direction = "Stop"
colors = random.choice(['red', 'blue', 'green'])
shapes = random.choice(['square', 'circle'])
for segment in segments:
segment.goto(1000, 1000)
segments.clear()
score = 0
delay = 0.1
pen.clear()
pen.write("Score : {} High Score : {} ".format(
score, high_score), align="center", font=("candara", 24, "bold"))
if head.distance(food) < 20:
x = random.randint(-270, 270)
y = random.randint(-270, 270)
food.goto(x, y)
# Adding segment
new_segment = turtle.Turtle()
new_segment.speed(0)
new_segment.shape("square")
new_segment.color("orange") # tail colour
new_segment.penup()
segments.append(new_segment)
delay -= 0.001
score += 10
if score > high_score:
high_score = score
pen.clear()
pen.write("Score : {} High Score : {} ".format(
score, high_score), align="center", font=("candara", 24, "bold"))
# Checking for head collisions with body segments
for index in range(len(segments)-1, 0, -1):
x = segments[index-1].xcor()
y = segments[index-1].ycor()
segments[index].goto(x, y)
if len(segments) > 0:
x = head.xcor()
y = head.ycor()
segments[0].goto(x, y)
move()
for segment in segments:
if segment.distance(head) < 20:
time.sleep(1)
head.goto(0, 0)
head.direction = "stop"
colors = random.choice(['red', 'blue', 'green'])
shapes = random.choice(['square', 'circle'])
for segment in segments:
segment.goto(1000, 1000)
segments.clear()
score = 0
delay = 0.1
pen.clear()
pen.write("Score : {} High Score : {} ".format(
score, high_score), align="center", font=("candara", 24, "bold"))
time.sleep(delay)
wn.mainloop()
โค2๐1
๐ Step-by-Step Guide to Become a Full Stack Web Developer ๐
1. Learn Front-End Technologies:
- ๐ HTML: Dive into the structure of web pages, creating the foundation of your applications.
- ๐จ CSS: Explore styling and layout techniques to make your websites visually appealing.
- ๐ JavaScript: Add interactivity and dynamic content, making your websites come alive.
2. Master Front-End Frameworks:
- ๐ ฐ๏ธ Angular, โ๏ธ React, or ๐ผ Vue.js: Choose your weapon! Build responsive, user-friendly interfaces using your preferred framework.
3. Get Backend Proficiency:
- ๐ป Choose a server-side language: Embrace Python, Java, Ruby, or others to power the backend magic.
- โ๏ธ Learn a backend framework: Express, Django, Ruby on Rails - tools to create robust server-side applications.
4. Database Fundamentals:
- ๐ SQL: Master the art of manipulating databases, ensuring seamless data operations.
- ๐ Database design and management: Architect and manage databases for efficient data storage.
5. Dive into Back-End Development:
- ๐ Set up servers and APIs: Construct server architectures and APIs to connect the front-end and back-end.
- ๐ก Handle data storage and retrieval: Fetch and store data like a pro!
6. Version Control & Collaboration:
- ๐ Git: Time to track changes like a wizard! Collaborate with others using the magical GitHub.
7. DevOps and Deployment:
- ๐ Deploy applications on servers (Heroku, AWS): Launch your creations into the digital cosmos.
- ๐ Continuous Integration/Deployment (CI/CD): Automate the deployment process like a tech guru.
8. Security Basics:
- ๐ Implement authentication and authorization: Guard your realm with strong authentication and permission systems.
- ๐ก Protect against common web vulnerabilities: Shield your applications from the forces of cyber darkness.
9. Learn About Testing:
- ๐งช Unit, integration, and end-to-end testing: Test your creations with the rigor of a mad scientist.
- ๐ฆ Ensure code quality and functionality: Deliver robust, bug-free experiences.
10. Explore Full Stack Concepts:
- ๐ Understand the flow of data between front-end and back-end: Master the dance of data between realms.
- โ๏ธ Balance performance and user experience: Weave the threads of speed and delight into your creations.
11. Keep Learning and Building:
- ๐ Stay updated with industry trends: Keep your knowledge sharp with the ever-evolving web landscape.
- ๐ทโโ๏ธ Work on personal projects to showcase skills: Craft your digital masterpieces and show them to the world.
12. Networking and Soft Skills:
- ๐ค Connect with other developers: Forge alliances with fellow wizards of the web.
- ๐ฃ Effective communication and teamwork: Speak the language of collaboration and understanding.
Remember, the path to becoming a Full Stack Web Developer is an exciting journey filled with challenges and discoveries. Embrace the magic of coding and keep reaching for the stars! ๐๐
Engage with a reaction for more guides like this!โค๏ธ๐คฉ
โ
The Coding Wizard
1. Learn Front-End Technologies:
- ๐ HTML: Dive into the structure of web pages, creating the foundation of your applications.
- ๐จ CSS: Explore styling and layout techniques to make your websites visually appealing.
- ๐ JavaScript: Add interactivity and dynamic content, making your websites come alive.
2. Master Front-End Frameworks:
- ๐ ฐ๏ธ Angular, โ๏ธ React, or ๐ผ Vue.js: Choose your weapon! Build responsive, user-friendly interfaces using your preferred framework.
3. Get Backend Proficiency:
- ๐ป Choose a server-side language: Embrace Python, Java, Ruby, or others to power the backend magic.
- โ๏ธ Learn a backend framework: Express, Django, Ruby on Rails - tools to create robust server-side applications.
4. Database Fundamentals:
- ๐ SQL: Master the art of manipulating databases, ensuring seamless data operations.
- ๐ Database design and management: Architect and manage databases for efficient data storage.
5. Dive into Back-End Development:
- ๐ Set up servers and APIs: Construct server architectures and APIs to connect the front-end and back-end.
- ๐ก Handle data storage and retrieval: Fetch and store data like a pro!
6. Version Control & Collaboration:
- ๐ Git: Time to track changes like a wizard! Collaborate with others using the magical GitHub.
7. DevOps and Deployment:
- ๐ Deploy applications on servers (Heroku, AWS): Launch your creations into the digital cosmos.
- ๐ Continuous Integration/Deployment (CI/CD): Automate the deployment process like a tech guru.
8. Security Basics:
- ๐ Implement authentication and authorization: Guard your realm with strong authentication and permission systems.
- ๐ก Protect against common web vulnerabilities: Shield your applications from the forces of cyber darkness.
9. Learn About Testing:
- ๐งช Unit, integration, and end-to-end testing: Test your creations with the rigor of a mad scientist.
- ๐ฆ Ensure code quality and functionality: Deliver robust, bug-free experiences.
10. Explore Full Stack Concepts:
- ๐ Understand the flow of data between front-end and back-end: Master the dance of data between realms.
- โ๏ธ Balance performance and user experience: Weave the threads of speed and delight into your creations.
11. Keep Learning and Building:
- ๐ Stay updated with industry trends: Keep your knowledge sharp with the ever-evolving web landscape.
- ๐ทโโ๏ธ Work on personal projects to showcase skills: Craft your digital masterpieces and show them to the world.
12. Networking and Soft Skills:
- ๐ค Connect with other developers: Forge alliances with fellow wizards of the web.
- ๐ฃ Effective communication and teamwork: Speak the language of collaboration and understanding.
Remember, the path to becoming a Full Stack Web Developer is an exciting journey filled with challenges and discoveries. Embrace the magic of coding and keep reaching for the stars! ๐๐
Engage with a reaction for more guides like this!โค๏ธ๐คฉ
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๐6
What is Python?
- Python is a programming language ๐
- It's known for being easy to learn and read ๐
- You can use it for web development, data analysis, artificial intelligence, and more ๐ป๐๐
- Python is like writing instructions for a computer in a clear and simple way ๐๐ก
- Python supports working with a lot of data, making it great for projects that involve big data and statistics ๐๐
- It has a huge community, which means lots of support and resources for learners ๐๐ค
- Python is versatile; it's used in scientific fields, finance, and even in making movies and video games ๐งช๐ฐ๐ฌ๐ฎ
- It can run on different platforms like Windows, macOS, Linux, and even Raspberry Pi ๐ฅ๏ธ๐๐ง๐
- Python has many libraries and frameworks that help speed up the development process for web applications, machine learning, and more ๐ ๏ธ๐
The Coding Wizardโ
- Python is a programming language ๐
- It's known for being easy to learn and read ๐
- You can use it for web development, data analysis, artificial intelligence, and more ๐ป๐๐
- Python is like writing instructions for a computer in a clear and simple way ๐๐ก
- Python supports working with a lot of data, making it great for projects that involve big data and statistics ๐๐
- It has a huge community, which means lots of support and resources for learners ๐๐ค
- Python is versatile; it's used in scientific fields, finance, and even in making movies and video games ๐งช๐ฐ๐ฌ๐ฎ
- It can run on different platforms like Windows, macOS, Linux, and even Raspberry Pi ๐ฅ๏ธ๐๐ง๐
- Python has many libraries and frameworks that help speed up the development process for web applications, machine learning, and more ๐ ๏ธ๐
The Coding Wizard
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๐1
Frontend vs Backend๐จโ๐ป๐ฅ
Here are the main points about frontend and backend development:
Frontend:
1. Client-side aspect of web development.
2. User interacts directly with the frontend.
3. Includes user interface design, layout, and functionality.
4. Technologies: HTML, CSS, JavaScript.
5. Responsible for what users see and interact with on the browser.
6. Executes on the user's device (browser).
Backend:
1. Server-side aspect of web development.
2. Users don't directly interact with the backend.
3. Manages server, application logic, and database interactions.
4. Technologies: Python, Java, Ruby, etc.
5. Handles user requests, processes data, and sends responses.
6. Executes on the server.
Here are the main points about frontend and backend development:
Frontend:
1. Client-side aspect of web development.
2. User interacts directly with the frontend.
3. Includes user interface design, layout, and functionality.
4. Technologies: HTML, CSS, JavaScript.
5. Responsible for what users see and interact with on the browser.
6. Executes on the user's device (browser).
Backend:
1. Server-side aspect of web development.
2. Users don't directly interact with the backend.
3. Manages server, application logic, and database interactions.
4. Technologies: Python, Java, Ruby, etc.
5. Handles user requests, processes data, and sends responses.
6. Executes on the server.