Frontend--About client-side JavaScript

Client-side JavaScript is the JavaScript that runs in the browser, the modern browser has developed very well, although it is an application, but it can be regarded as a simple operating system. As Windows, Linux and other operating systems to provide people with the document storage, network calls, drawing a variety of visual images and other functions in the browser can also be supported, so like the operating system is called desktop applications, the browser is rich in content, An interactive Web document is also called a Web application.

Unlike desktop applications, where most of the resources required for desktop applications are already deployed locally, desktop applications can react very quickly, but the resources needed for Web applications are not local at first, These resources need to be acquired through a network request and then processed by the browser and displayed, this process takes some time, so the performance is not as fast as the desktop application. And the decision from the request to show the length of the factors have two aspects, one is the processing speed of the server-side program, the other is the processing speed of the browser, in which the browser processing speed depends on the quality of the page, that is, the HTML organization structure, CSS and JavaScript writing quality.

　　

Frontend--About client-side JavaScript