We will learn about the window/document resize() event with the example. jQuery | resize() with Examples. The resize() method is an inbuilt method in jQuery which is used when the browser window change its size. Parameter: This method accepts single parameter function which is optional. It is used to specify the function to run when the resize event is called. So watch the full video and learn what is resize() event in jquery and how to get the window width and height using resize() event in jquery with suitable example.