📅 Interview Date: July 21, 2025
🏢 Company: miHoYo
💼 Position: Frontend Development (Early Batch)

🧑‍💻 Overall Interview Review

​ Recently, many companies have started their fall recruitment. I received an invitation for the first round of miHoYo's early batch front-end interview last week and was quite excited, as the early batch is a cutthroat competition among top candidates.

​ Since my company had a lighter workload this week, I prepared by solving some LeetCode problems and reviewing common interview questions (a.k.a. “eight-legged essays”). On the day of the interview, it went pretty well—the intensity was slightly higher than the internship interview but still manageable. Below is my interview record (no recording, from memory only):

📝 Interview Questions Summary

1. Self-Introduction & Project Experience

1. Self-introduction
2. Introduce two projects:
   • Internship project: D2C (Design-to-Code) efficiency improvements (e.g., Figma to Code automation)
   • Business project: responsible for business modules or optimization scenarios

2. Frontend Fundamentals & Networking

3. Type checking methods in JavaScript

   • typeof: for primitive type checking, typeof null === 'object'
   • instanceof: checks prototype chain
   • Object.prototype.toString.call(): most precise
   • constructor: unstable, may be modified
   • Compare their usage scenarios and pros/cons

4. Common methods for vertical centering

   • Flex layout: display: flex; align-items: center;
   • Grid layout: display: grid; place-items: center;
   • position: absolute + transform: top: 50%; transform: translateY(-50%)
   • Single-line text: line-height
   • table-cell: early compatibility solution

5. Complete flow from URL input to page rendering

   • DNS resolution → TCP connection establishment (three-way handshake)
   • Initiate HTTP request → receive response
   • Parse HTML → build DOM & CSSOM → execute JavaScript → page rendering

6. Difference between Cookie, localStorage, and sessionStorage

   Feature	Cookie	localStorage	sessionStorage
   Lifetime	Configurable	Permanent	Cleared on page close
   Storage size	~4KB	~5MB	~5MB
   Sent with requests?	✅ Yes	❌ No	❌ No
   Ease of access	Moderate	✅ Easy	✅ Easy

7. Browser caching mechanism

   • Strong cache: Expires and Cache-Control
   • Conditional caching: Last-Modified + If-Modified-Since, ETag + If-None-Match
   • When loading, check if cache strategy is hit

8. DNS resolution process

   • Local cache → system cache → local hosts file
   • Initiate recursive query to DNS server (root → TLD → authoritative)

9. CDN principles

   • Content Delivery Network, caches static resources on edge nodes
   • Relieves origin server pressure, improves response speed
   • Has origin-fallback mechanism, automatically updates when cache expires

✍️ Coding Problem

Kth Missing Positive Number

✅ Problem Description:

Given a strictly increasing sorted array of positive integers arr, where some positive integers are missing, return the kth missing positive integer.

Conclusion

​ Take it easy. I was too confident in myself and didn't recognize my shortcomings. My educational background is indeed a major weakness in fall recruitment, but that's the objective reality, so there's nothing I can do about it... I'll strive to convert my internship into a full-time offer.