How To Create Svg Dynamically Using Javascript

In the world of web development, the use of Scalable Vector Graphics (SVGs) is becoming more popular. As a result, developers are increasingly looking for ways to create SVGs dynamically using JavaScript. This article will provide a comprehensive guide on how to do just that.

The main advantage of SVGs is that they are resolution independent. This means that they can be scaled up or down without losing any of their quality. This makes them perfect for use on websites and in other applications, such as mobile apps. They can also be animated and manipulated using JavaScript, making them even more versatile.

The first step in creating an SVG dynamically using JavaScript is to create an empty SVG element. This is done using the createElementNS() method, which takes two parameters: the namespace of the SVG element and the name of the element. For example, to create an empty SVG element, you would use the following code:

var svgElem = document.createElementNS("http://www.w3.org/2000/svg", "svg");

Once you have created the empty SVG element, you can then start to add various shapes to it. This is done using the createSVG() method, which takes two parameters: the type of the shape you want to create and an array of attributes for the shape. For example, to create a circle, you would use the following code:

var circle = svgElem.createSVG("circle", {
 cx: 50, 
 cy: 50, 
 r: 30
 });

The above code will create a circle with a radius of 30 at coordinates (50, 50). You can then use the appendChild() method to add the circle to the SVG element. This is done as follows:

svgElem.appendChild(circle);

You can also add other shapes to the SVG element, such as rectangles, lines, and polygons. For example, to create a rectangle, you would use the following code:

var rect = svgElem.createSVG("rect", {
 x: 10, 
 y: 10, 
 width: 80, 
 height: 80
 });
 svgElem.appendChild(rect);

You can also add text to the SVG element using the same method. To do this, you would use the createText() method and pass it an array of attributes. For example, to create a text element, you would use the following code:

var text = svgElem.createText({
 x: 0, 
 y: 0, 
 text: "Hello World"
 });
 svgElem.appendChild(text);

Once you have created the SVG element and added the various shapes and text elements to it, you can then use the setAttribute() method to set various attributes of the SVG element. For example, to set the width and height of the SVG element, you would use the following code:

svgElem.setAttribute("width", "400");
 svgElem.setAttribute("height", "400");

Finally, you can use the appendChild() method to add the SVG element to the document. This is done as follows:

document.body.appendChild(svgElem);

And that’s it! You now have a fully functioning SVG element that can be manipulated using JavaScript. As you can see, it is relatively easy to create SVGs dynamically using JavaScript, and this is just one of the many advantages of using this powerful language.

Conclusion

In this article, we have seen how to create SVG elements dynamically using JavaScript. We have looked at how to create the SVG element and add various shapes and text elements to it. We have also seen how to set various attributes of the SVG element. By following the steps outlined in this article, you should be able to create your own dynamic SVGs with ease.