Introduction
What is Lessjs?
Lessjs is a frontend component library used for building high-performance pages. It is developed based on Web Components and provides a series of ready-to-use components, such as carousels, videos, waterfall layouts, etc., to help you develop user interfaces more efficiently.
Using Lessjs via CDN
You can use Lessjs directly via CDN with the script tag:
You just need to include this script in the <head> tag of the page. The best practice is to introduce this script as early as possible in the <head>.
Creating a Lessjs Page
The structure of your HTML may look like this:
So far, the content in the code is very simple and easy to understand, but there are a few places where we must use it according to the specifications. In the following examples, we will default to omitting the code related to Lessjs resource import.
A Lessjs HTML document must meet the following conditions:
-
The script that introduces the CDN must have an
asyncattribute to ensure better page performance. -
Include a style code in the head. The CSS style will initially hide the page content until the Lessjs JS is fully loaded.
-
The
langattribute must take one of the following values (case insensitive):
AI Usage Notes (LLM Ready)
- Section density: detected 3 level-2 headings.
- Example density: detected 2 code blocks.
- Read conclusions first: extract definitions, constraints, and boundary conditions.
- Then verify with examples: rely on executable snippets rather than prose only.
- Finally cross-check: open related component pages to avoid doc/runtime drift.