The Document Object Model (DOM) is a programming interface for HTML, XML, and SVG documents. It provides a platform- and language-neutral interface that allows programs and scripts to dynamically access and update the content, structure and style of a document. In this tutorial, we will learn how to create a new SVG element using the Document Object Model (DOM) API.
SVG stands for Scalable Vector Graphics. It is a language for describing two-dimensional graphics and graphical applications in XML. SVG elements are used to create vector graphics, which can be rendered on any device with a resolution independent of the resolution of the original object. SVG elements can be created and manipulated with JavaScript.
Creating a New SVG Element
To create a new SVG element, we first need to create a Document object. We can use the createDocument() method of the DOMParser interface to create a new document. This method takes two parameters; the first is the namespace URI of the document and the second is the document type. We can use the namespace URI of the SVG document type ) and the document type is “svg”.
Once the document is created, we can then create the SVG element using the createElementNS() method of the document object. This method takes two parameters; the first is the namespace URI of the element and the second is the qualified name of the element. We can use the namespace URI of the SVG document type ) and the qualified name is “svg”.
The createElementNS() method returns an SVG element object. We can then set the attributes of the element using the setAttribute() method. We can set the x, y, width and height attributes of the element. We can also set the fill color, stroke color and stroke width of the element.
Adding the SVG Element to the Document
Once the element is created, we can add it to the document. We can do this using the appendChild() method of the document object. This method takes a single parameter; the element object to be added. The element will be added to the end of the document.
We can also add the element to a specific location in the document. We can do this using the insertBefore() method of the document object. This method takes two parameters; the element to be inserted and the reference element. The element will be inserted before the reference element.
Removing the SVG Element from the Document
Once the element is added to the document, we can remove it if we no longer need it. We can do this using the removeChild() method of the document object. This method takes a single parameter; the element to be removed. The element will be removed from the document.
Using the SVG Element
Once the element is added to the document, we can use it. We can use the setAttribute() method to set the attributes of the element. We can also use the getAttribute() method to get the value of an attribute. We can also use the getElementsByTagName() method to get a list of elements with the same tag name.
Conclusion
In this tutorial, we have learned how to create a new SVG element using the Document Object Model (DOM) API. We have seen how to create a document, create an SVG element and add it to the document. We have also seen how to remove an element from the document and how to use it. We hope you have found this tutorial useful and that it has helped you to understand the Document Object Model (DOM) API.