Which method is used to add an element at the end of an array?
Anonymous Quiz
15%
A) pop()
67%
B) push()
15%
C) shift()
4%
D) unshift()
👍4😭2
Which method is used to create a new array containing only elements that match a condition?
Anonymous Quiz
9%
A) reduce()
19%
B) find()
58%
C) filter()
13%
D) push()
👍5
How do you access the name property of the object below?
const person = { name: "Deepak",age: 25};
const person = { name: "Deepak",age: 25};
Anonymous Quiz
9%
A) person->name
22%
B) person[name]
41%
C) person.name
28%
D) Both B and C
❤3👍2
What will be the output?
JavaScript
const nums = [1, 2, 3, 4]; const sum = nums.reduce( (total, num) => total + num, 0 ); console.log(sum);
JavaScript
const nums = [1, 2, 3, 4]; const sum = nums.reduce( (total, num) => total + num, 0 ); console.log(sum);
Anonymous Quiz
22%
[1,2,3,4]
13%
4
56%
10
8%
12
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20 JavaScript Project Ideas🔥:
🔹Countdown Timer
🔹Digital Clock
🔹Calculator App
🔹Password Generator
🔹Random Quote Generator
🔹Image Slider
🔹Sticky Notes App
🔹Typing Speed Test
🔹Expense Tracker
🔹Currency Converter
🔹BMI Calculator
🔹Pomodoro Timer
🔹Form Validation Project
🔹Memory Card Game
🔹URL Shortener UI
🔹Kanban Board
🔹GitHub Profile Finder
🔹Age Calculator
🔹Search Filter App
🔹Animated Login Page
Do not forget to React ❤️ to this message for more content like this
Thanks for joining ❤️🙏
🔹Countdown Timer
🔹Digital Clock
🔹Calculator App
🔹Password Generator
🔹Random Quote Generator
🔹Image Slider
🔹Sticky Notes App
🔹Typing Speed Test
🔹Expense Tracker
🔹Currency Converter
🔹BMI Calculator
🔹Pomodoro Timer
🔹Form Validation Project
🔹Memory Card Game
🔹URL Shortener UI
🔹Kanban Board
🔹GitHub Profile Finder
🔹Age Calculator
🔹Search Filter App
🔹Animated Login Page
Do not forget to React ❤️ to this message for more content like this
Thanks for joining ❤️🙏
❤14👍4
☁️ Backend Engineering Tips
✅ Validate all user input
✅ Log errors properly
✅ Use environment variables
✅ Design scalable APIs
✅ Cache frequent requests
✅ Write clean documentation
✅ Validate all user input
✅ Log errors properly
✅ Use environment variables
✅ Design scalable APIs
✅ Cache frequent requests
✅ Write clean documentation
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Here is a great JavaScript interview question!
What the heck is a Promise doing under the hood?
In JavaScript, things usually happen one after the other. It's like a checklist each item gets done before moving to the next.
When a function returns a Promise, it's like making a promise to do something, like fetch data from the internet. But JavaScript doesn't wait around for the data to come back. Instead, it moves on to the next task.
Now, here's where things get interesting. While JavaScript is busy doing other stuff, like running more code, the Promise is off fetching data in the background.
Once the data is fetched, the Promise is fulfilled, and it has some information to share. But JavaScript needs to know when it's time to handle that information. That's where the onFulfilled part of the Promise comes in.
When the Promise is fulfilled, JavaScript takes the onFulfilled code and puts it in a special queue, ready to be run.
Now, async/await enters the scene. When we mark a function as async, we're telling JavaScript, "Hey, this function might take some time to finish, so don't wait up for it."
And when we use the await keyword inside an async function, it's like saying, "Hold on a sec, JavaScript. I need to wait for something important before moving on."
So, when JavaScript encounters an await keyword, it pauses and lets the async function do its thing. If that thing happens to be a Promise, JavaScript knows it can move on to other tasks while waiting for the Promise to resolve.
Once the Promise is resolved, JavaScript picks up where it left off and continues running the code.
Promises and async/await allow JavaScript to handle asynchronous tasks while keeping things organized and in order. Promises handle the background tasks, while async/await makes it easier to work with them in our code, ensuring everything happens in the right sequence.
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ENJOY LEARNING 👍👍
What the heck is a Promise doing under the hood?
In JavaScript, things usually happen one after the other. It's like a checklist each item gets done before moving to the next.
When a function returns a Promise, it's like making a promise to do something, like fetch data from the internet. But JavaScript doesn't wait around for the data to come back. Instead, it moves on to the next task.
Now, here's where things get interesting. While JavaScript is busy doing other stuff, like running more code, the Promise is off fetching data in the background.
Once the data is fetched, the Promise is fulfilled, and it has some information to share. But JavaScript needs to know when it's time to handle that information. That's where the onFulfilled part of the Promise comes in.
When the Promise is fulfilled, JavaScript takes the onFulfilled code and puts it in a special queue, ready to be run.
Now, async/await enters the scene. When we mark a function as async, we're telling JavaScript, "Hey, this function might take some time to finish, so don't wait up for it."
And when we use the await keyword inside an async function, it's like saying, "Hold on a sec, JavaScript. I need to wait for something important before moving on."
So, when JavaScript encounters an await keyword, it pauses and lets the async function do its thing. If that thing happens to be a Promise, JavaScript knows it can move on to other tasks while waiting for the Promise to resolve.
Once the Promise is resolved, JavaScript picks up where it left off and continues running the code.
Promises and async/await allow JavaScript to handle asynchronous tasks while keeping things organized and in order. Promises handle the background tasks, while async/await makes it easier to work with them in our code, ensuring everything happens in the right sequence.
Web Development Best Resources: https://topmate.io/coding/930165
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👍9❤2
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