Developers are increasingly adopting a single codebase approach for multiple operating systems, facilitated by frameworks like Electron and Vue. Electron, a JavaScript framework, enables the creation of desktop applications using JavaScript and HTML, while Vue is a library for building interactive web applications. The text provides a detailed tutorial on creating a markdown preview app using Vue and Electron, including setting up the Vue environment, integrating Electron with Vue CLI, and enhancing the user interface with Bootstrap. A significant part of the tutorial covers implementing a markdown previewer, with both a complex method involving custom Vue directives and a simpler method using the vue-directive-markdown package. The process involves configuring various components, handling dependencies, and setting up a user interface that previews markdown content dynamically. The tutorial highlights the benefits of using Vue and Electron for creating applications that work seamlessly across Windows, Mac, and Linux, emphasizing the growing need for adaptable coding practices in modern software development.