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.Jul 21, 2022Jul 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 iJan 31Jan 31
Jianqiu WangRails Validation: Ensuring Data Integrity and User ExperienceIntroductionApr 10, 2023Apr 10, 2023
Jianqiu WangUnderstanding the synchronous/asynchronous behavior of setState in ReactWhether in interviews or in daily development, we often encounter such a question:Sep 19, 2022Sep 19, 2022