Answer1215

摘要： Let's say we have App.component.ts, it use provider inside component level: @Component({ selector: 'app-root', templateUrl: './app.component.html', st 阅读全文

摘要： Rules Each page should have at least one <h1> Pages should be structured in a hierarchical manner <h1>: being the most important (usually page titles 阅读全文

摘要： Reader Monad Continue with previous post, here we have some helper functions: const toUpper = s => s.toUpperCase(); const exclaim = s => `${s}!`; And 阅读全文

摘要： Let's say we have two fucntions: const toUpper = s => s.toUpperCase(); const exclaim = s => `${s}!`; We want to combine those. But function itself doe 阅读全文

摘要： useState is typically simpler at first than useReducer (you can even implement useState using useReducer), but there's one scenario where useReducer i 阅读全文

摘要： Learn how to use custom events to expose internal events from withing a web component. class MyWelcome extends HTMLElement { constructor() { super(); 阅读全文

摘要： We want to write a Monoid, which able to take function called 'run', therefore we able to run a serial of functions together to get a combined result. 阅读全文

摘要： const [state, dispatch] = useReducer(reducer, initialArg, init); The third arguement 'init' is a lazy initialization which is a function. It is useful 阅读全文

摘要： MECE：Mutually exclusive collectively exhaustive， 相互独立，完全穷尽，“不重叠，不遗漏” -- 《金字塔原理》Barbara Minto 如何避免在做汇报时，逻辑层次混乱？-- MECE 如何理解，不重叠，不遗漏？ 例如：“把目标用户都列出来：男人，小 阅读全文

摘要： As a user, it can be very disorienting when the "wrong" UI is briefly shown to the user: a login link is shown to an authenticated user, or a 404 erro 阅读全文