Official WeDoctor Group frontend public account, sharing original tech articles, events, job postings, and occasional daily updates from our tech team.
This article explains how Vue’s mergeOptions function merges constructor and instance options, detailing the normalization of props, inject, and directives, and how extends and mixins are recursively combined to produce the final component configuration.
This article explains how the V8 JavaScript engine creates garbage data, the steps of its garbage‑collection algorithms, the roles of the minor (scavenger) and major (mark‑sweep) collectors, and modern optimizations like parallel, incremental, and concurrent collection to improve performance.
This article explains how Vue.js parses and merges constructor options during instance creation, covering the initMixin flow, the resolveConstructorOptions function for both base Vue constructors and Vue.extend subclasses, and the underlying source files that define core components, directives, filters, and the _base reference.
This article explains how to capture user interactions on insurance web pages by taking DOM snapshots, creating incremental snapshots with MutationObserver, leveraging the rrweb library for recording and replay, and converting the recorded data into high‑frame‑rate video using Puppeteer and FFmpeg to ensure reliable evidence.
This article walks through why frontend performance matters for user experience and SEO, then presents a comprehensive toolbox—including Chrome DevTools, Lighthouse, webPageTest, webpack plugins, HTTP caching, service workers, preload/prefetch, lazy loading, skeleton screens, and virtualization techniques—plus concrete code snippets and best‑practice rules to dramatically reduce load times and improve perceived responsiveness.
This article explains how Vite, built for Vue 3, solves Webpack's slow cold starts, sluggish hot updates, and heavy bundling by leveraging native ES Modules, a lightweight Koa server, and on‑demand compilation, while also comparing Vite with Snowpack.
This article walks through Vue 2.0's core source code, explaining the initialization and mounting process, the three‑stage template compilation (parse, optimize, generate), the reactivity system with dependency collection, and how the virtual DOM and patch algorithm update the view.
This article explores how the simple CSS rule margin:auto can be used to center fixed‑width blocks, align elements to the right, and combine with Flexbox for sophisticated layout patterns, while also addressing overflow challenges and offering practical code examples.
This article explains why permission systems are essential, introduces the RBAC model and its variants, outlines its key characteristics, and guides you through designing a basic role‑based access control system with practical examples and diagrams.
This article explains how Vue 3’s reactivity system works—covering the creation of reactive proxies, the role of Ref, the mechanics of computed properties, and the behavior of watch and watchEffect APIs—while illustrating common pitfalls and optimization techniques with code examples and diagrams.
