![]() In modern UI development, we have found that instead of dividing the codebase into three huge layers that interweave with one another, it makes much more sense to divide them into loosely-coupled components and compose them. Separation of concerns, when applied dogmatically as separation of file types, does not help us reach that goal in the context of increasingly complex frontend applications. The ultimate goal of engineering principles is to improve the maintainability of codebases. To answer this question, it is important for us to agree that separation of concerns is not equal to the separation of file types. Some users coming from a traditional web development background may have the concern that SFCs are mixing different concerns in the same place - which HTML/CSS/JS were supposed to separate! Check out more details in the SFC Tooling section. In actual projects, we typically integrate the SFC compiler with a build tool such as Vite or Vue CLI (which is based on webpack), and Vue provides official scaffolding tools to get you started with SFCs as fast as possible. You can play with SFCs and explore how they are compiled in the Vue SFC Playground. ![]() For production they can be extracted and merged into a single CSS file. tags inside SFCs are typically injected as native tags during development to support hot updates. Mixins are a way of including ("mixing in") a bunch of properties from one rule-set into another rule-set. These are pretty self-explanatory: + 10px What does Less add to CSS? Here's a quick overview of features. For third-party tools for Less, see Tools.For detailed usage instructions, see Using Less.js. ![]() For a list of Less Built-in functions, see Functions.For detailed documentation on Less language features, see Features.Less only makes a few convenient additions to the CSS language, which is one of the reasons it can be learned so quickly. ![]() This is the official documentation for Less, the language and Less.js, the JavaScript tool that converts your Less styles to CSS styles.īecause Less looks just like CSS, learning it is a breeze. Less (which stands for Leaner Style Sheets) is a backwards-compatible language extension for CSS. ![]()
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