PinnedJianqiu WangDo you know what is “this” in JavaScript ?In fact, “new”, “bind”, “call”, and “apply” in JavaScript are all inseparable from “this”, so this article will focus on "this" key word.5 min read·Jul 21, 2022----
Jianqiu WangDatabase normalizationToday, let’s talk about the three paradigms in SQL. Usually we need certain rules to follow when creating a database. In RDBMS, this rule i6 min read·Jan 31, 2024----
Jianqiu WangRails Validation: Ensuring Data Integrity and User ExperienceIntroduction3 min read·Apr 10, 2023----
Jianqiu WangUnderstanding the synchronous/asynchronous behavior of setState in ReactWhether in interviews or in daily development, we often encounter such a question:3 min read·Sep 19, 2022----