It defines the aspect ratio, the inner scaling of object lengths and coordinates, and the axis coordinates ( x and y) for where the SVG should originate. The viewBox attribute is an essential component to SVG that actually makes them scalable. To begin down the road to dynamically resizing SVGs, we need to understand two basic attributes: viewBox and preserveAspectRatio.

The viewBox and preserveAspectRatio Attributes Since SVG isn’t an image and thus can be drawn (rendered) at any pixel size, the browser doesn’t inherently associate a width or height unless you explicitly give it one nor will it be able to resize the SVG even if the parent container changes size. The resize event is sent to the window element when the size of the browser window changes: Now whenever the browser window's size is. on ('resize', handler) in the first and second variations, and. Your computer then recalculates which pixels along those axes should be which colors to best represent that now resized image, discarding the least important pixels in the process. resize () This signature does not accept any arguments.

Think of it this way: Images have specific dimensions ( width and height) and thus when a browser displays them or is asked to resize them, it can just automatically adjust the number of pixels in either the x or y axis. The reason SVG doesn’t inherently scale well when compared to, say, an image, is that SVG is in fact not an image at all – SVG is an object. When developing with SVG, it can often be difficult to scale SVG objects when the containing frame or even the entire browser window changes size. It must be an instance of eRef or React.Scalable Vector Graphics, or SVG, is a markup language that describes and generates two-dimensional vector graphics, primarily for the web and viewed on modern browsers. Use this prop to pass a reference to the element you want to attach resize handlers to. These options will be used as a second parameter of resizeObserver.observe method.

Please refer to lodash's docs for more info

Js on resize