Creating Svg Dom In Javascript: A Step-By-Step Guide

Adding an SVG Element Using D3.js DashingD3js

The Scalable Vector Graphics (SVG) format is becoming increasingly popular for web developers, as it allows them to create high-quality images on the web without the need for additional plugins or software. SVG images are composed of shapes, paths, and text, which can be manipulated and styled using JavaScript. In this guide, we’ll take a look at how to create an SVG DOM using JavaScript.

What is an SVG DOM?

An SVG DOM, or Document Object Model, is a representation of an SVG image in the form of a tree-like structure. It contains all the elements of the SVG image, such as shapes, paths, and text, as well as properties such as position, color, and size. By manipulating the SVG DOM, it’s possible to create dynamic, interactive images on the web.

Creating an SVG DOM in JavaScript

Creating an SVG DOM in JavaScript is relatively straightforward. The first step is to create a new SVG element by using the createElementNS() method. This method takes two parameters: the namespace of the element (which is always “http://www.w3.org/2000/svg” for SVG elements) and the name of the element. For example, to create an SVG element with the name “rect”, you would use the following code:

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

Once you’ve created the element, you can set its attributes using the setAttribute() method. This method takes two parameters: the name of the attribute and the value of the attribute. For example, to set the height of the rectangle to “100”, you would use the following code:

svgElement.setAttribute("height", "100");

You can also set the position of the element by using the x and y attributes. The x attribute sets the x-coordinate of the element, while the y attribute sets the y-coordinate. For example, to set the x-coordinate to “50”, you would use the following code:

svgElement.setAttribute("x", "50");

You can also add styling to the element using the style attribute. This attribute takes a string of CSS styling rules, which you can use to set the color, font, and other styling properties of the element. For example, to set the fill color of the rectangle to “red”, you would use the following code:

svgElement.setAttribute("style", "fill: red;");

Finally, you can add the element to the SVG DOM by using the appendChild() method. This method takes a single parameter: the element to be added. For example, to add the rectangle to the SVG DOM, you would use the following code:

document.getElementsByTagName("svg")[0].appendChild(svgElement);

Conclusion

In this guide, we’ve taken a look at how to create an SVG DOM in JavaScript. We’ve seen how to create an SVG element and set its attributes, as well as how to add styling to the element and add it to the SVG DOM. With this knowledge, you should now be able to create dynamic, interactive images on the web using JavaScript.