DEV Community: Chandru

JavaScript Functions: A Simple Explanation

Chandru — Wed, 02 Sep 2026 05:34:39 +0000

While learning JavaScript, one topic that I found really important was functions.

A function is basically a block of code that we can write once and use whenever we need it.

For example:

function greet() {
console.log("Hello!");
}

We can run the function by calling it:

greet();

Functions with Parameters

Sometimes we want to give some information to a function. That's where parameters come in.

function greet(name) {
console.log("Hello " + name);
}

Now we can pass different names when calling the function.

Return

A function can also give a value back using return.

function add(a, b) {
return a + b;
}

We can then store the result in a variable and use it wherever we need.

Why are functions useful?

Without functions, we might end up writing the same code again and again.

Functions help us:

Reuse code
Keep code organized
Avoid repetition
Make programs easier to understand

The main thing I learned is that functions are not just about writing code in a different format. They help us break a bigger problem into smaller, reusable pieces.

4 JavaScript Things I Learned Recently

Chandru — Tue, 01 Sep 2026 05:56:35 +0000

While learning JavaScript, I came across a few things that I had seen before but didn't fully understand: ternary, switch, break, and continue.

After trying them with small examples, they started making more sense.

Ternary

The ternary operator is basically a short way of writing if-else.

For example:

let result = age >= 18 ? "Adult" : "Minor";

It is useful when the condition is simple and you want to keep the code short.

Switch

Switch is useful when you need to check one value against different options.

For example, if we want to check the day:

switch (day) {
case "Monday": console.log("Start");
}

We can add more cases depending on what we need.

Break

Break is used when we want to stop a loop.

For example:

if (i === 5) break;

When the condition is true, the loop stops there.

Continue

Continue is different from break.

It skips the current iteration but allows the loop to keep running.

if (i === 5) continue;

So, the way I remember them is:

Ternary → shorter if-else

Switch → different cases

Break → stop

Continue → skip and move on

These are small things, but understanding them makes JavaScript a little easier to work with.

I'm still learning, but I've found that writing small examples is much better than just reading about the syntax.

JavaScript Conditions and Loops: A Simple Explanation

Chandru — Mon, 31 Aug 2026 05:29:52 +0000

When I started learning JavaScript, conditions and loops were two topics I came across pretty early.

They may look confusing at first, but the idea is actually simple.

Conditions are used when we want JavaScript to make a decision. For example, if a user is logged in, we can show their profile. If not, we can ask them to log in.

if (isLoggedIn) {
console.log("Welcome!");
}

We can also use else when there are two possible situations.

Loops are used when we want to repeat something without writing the same code again and again.

For example, if we want to print numbers from 1 to 5:

for (let i = 1; i <= 5; i++) {
console.log(i);
}

There are different types of loops in JavaScript, like for and while. Which one we use depends on what we are trying to do.

The main thing I learned is that conditions help us make decisions, while loops help us repeat tasks.

Once you understand these two concepts, writing JavaScript becomes a lot easier because you'll use them in many real projects.

Agile Methodology Explained: A Beginner’s Guide to Agile

Chandru — Tue, 11 Aug 2026 11:43:22 +0000

Agile Methodology Explained in Simple Words

When I first heard the term Agile methodology, I thought it was just another technical word I had to remember.

But after understanding it, I realized the basic idea is actually pretty simple.

Agile is a way of developing software where you build things step by step, take feedback, and make changes along the way.

So, how does it work?

Let's say a team is building a food delivery app.

Instead of developing the whole application and showing it to the customer after a few months, the team breaks the work into smaller parts.

For example:

First, they work on login and registration.
Then they work on restaurant search.
After that, they add the cart and payment.
Finally, they work on order tracking and other features.

The team keeps testing and getting feedback throughout the process.

This is useful because requirements can change. Maybe the customer wants a different feature or the team finds a problem. With Agile, it is easier to adjust things instead of changing the whole project at the end.

What is a Sprint?

A Sprint is simply a short period where the team focuses on a particular set of tasks.

For example, in a two-week Sprint, the team might decide to complete the login system.

At the end of the Sprint, the team checks what was completed, what went wrong, and what needs to be done next.

You might also hear terms like Backlog, Daily Stand-up, Sprint Review, and Retrospective when working with Agile teams.

You don't need to memorize all of them immediately. Once you see how an Agile team works, these terms start making more sense.

Agile and Scrum are not the same.

This confused me at first too.

Agile is the overall approach, while Scrum is one of the frameworks used to follow Agile principles.

Why do companies use Agile?

The main reason is flexibility.

Software projects rarely go exactly according to the original plan. Requirements change, bugs appear, and users give new feedback.

Agile makes it easier to deal with these changes because the team works in smaller cycles instead of waiting until the very end.

Final thoughts

You don't need to know every Agile term to understand Agile.

The main idea is:

Build → Test → Get feedback → Improve → Repeat

That's pretty much Agile at its core.

If you're just starting out in software development, learning the basics of Agile is useful because you'll probably come across it in real-world projects and job descriptions.