JavaScript is one of the most popular programming languages used for web development today. It can be used for a wide range of tasks, from creating simple interactive elements on a website to building complex applications. One of the tasks that can be done with JavaScript is creating Scalable Vector Graphics (SVG) polygons. An SVG polygon is a shape made up of straight lines connected at the endpoints.

SVG polygons are used in a variety of ways, from creating simple shapes to creating complex diagrams. They can be used to create complex geometric designs, to create interactive elements, and to create custom visuals for applications. In this tutorial, we will take a look at how to create an SVG polygon using JavaScript.

## What is an SVG Polygon?

An SVG polygon is a shape made up of straight lines connected at the endpoints. For example, a triangle is an SVG polygon with three sides, while a square is an SVG polygon with four sides. SVG polygons can have any number of sides, and the sides can be of any length. SVG polygons are created using the

## What is Needed to Create an SVG Polygon?

In order to create an SVG polygon, you will need the following:

- A text editor
- A web browser
- JavaScript code

## Creating an SVG Polygon with JavaScript

The first step in creating an SVG polygon with JavaScript is to create an HTML page and add the following code:

Creating an SVG Polygon with JavaScript

This code creates a basic HTML page with an empty SVG element. Next, you will need to create a JavaScript function that will create an SVG polygon. The following code creates a function called “createPolygon” that takes three parameters: the number of sides, the width of the polygon, and the height of the polygon.

```
function createPolygon(sides, width, height) {
var points = [];
var angle = 360 / sides;
for (var i = 0; i < sides; i++) {
var x = Math.cos(angle * i) * width;
var y = Math.sin(angle * i) * height;
points.push(x + "," + y);
}
var polygon = document.createElementNS("http://www.w3.org/2000/svg", "polygon");
polygon.setAttribute("points", points.join(" "));
return polygon;
}
```

This code creates a polygon with the given number of sides and the given width and height. The polygon is then returned as an SVG element.

Finally, you can call the createPolygon function to create an SVG polygon. The following code creates an SVG polygon with five sides, a width of 100, and a height of 200:

`var polygon = createPolygon(5, 100, 200);`

The polygon can then be added to the SVG element on the page by using the appendChild method:

`svg.appendChild(polygon);`

This will add the polygon to the SVG element on the page.

## Conclusion

Creating SVG polygons with JavaScript can be a powerful way to create custom visuals for your web applications. In this tutorial, we took a look at how to create an SVG polygon with JavaScript. We started by creating an HTML page and an empty SVG element. We then created a JavaScript function that takes three parameters: the number of sides, the width of the polygon, and the height of the polygon. Finally, we called the createPolygon function to create an SVG polygon and added it to the SVG element on the page.