Zhentiw - 博客园

2020年2月17日

[Angular 9] Built-in template syntax $any

摘要： The $any() type cast function Sometimes a binding expression triggers a type error during AOT compilation and it is not possible or difficult to fully 阅读全文

posted @ 2020-02-17 17:28 Zhentiw 阅读(209) 评论(0) 推荐(0)

[Angular 9] Improved Dependency Injection with the new providedIn scopes 'any' and 'platform'

摘要： @Injectable({ providedIn: "root" | "any" | "platform" }) export class MyService {} More ProvidedIn: root Every service defined with 'root' will be pro 阅读全文

posted @ 2020-02-17 17:21 Zhentiw 阅读(424) 评论(0) 推荐(0)

[Angular 9 Unit testing] Stronger typing for dependency injection in tests

摘要： In Angular version 8, TestBed.get was deprecated. In Angular version 9, we see why: TestBed.inject<T> is introduced as a type-safe replacement. There 阅读全文

posted @ 2020-02-17 16:48 Zhentiw 阅读(148) 评论(0) 推荐(0)

2020年2月16日

[Angular] Preserve the current route’s query parameters when navigating with the Angular Router

摘要： When we redirect to a different route from within our component's code using the Router.navigate or from within a component template via a [routerLink 阅读全文

posted @ 2020-02-16 23:15 Zhentiw 阅读(302) 评论(0) 推荐(0)

[Angular] Do relative routing inside component

摘要： onSave(personName) { this.person.name = personName; this.peopleService.save(this.person).subscribe(() => { // redirect back people list // this.router 阅读全文

posted @ 2020-02-16 23:11 Zhentiw 阅读(102) 评论(0) 推荐(0)

[Typescript] Make your optional fields required in TypeScript

摘要： In this post, let's see how to make all the optional fields to be required with the help of Required. type User = { name: string; age?: number; gender 阅读全文

posted @ 2020-02-16 22:53 Zhentiw 阅读(176) 评论(0) 推荐(0)

[Typescript] Exclude Properties from a Type in TypeScript (Omit)

摘要： There might be cases where you would want to create a type while excluding some of the properties from a type. Let's say you have a database query on 阅读全文

posted @ 2020-02-16 22:51 Zhentiw 阅读(208) 评论(0) 推荐(0)

[Javascript] Hide Properties from Showing Up in "for ... in" Loops in JavaScript

摘要： Sometimes we need to prevent some properties on a JavaScript object from being iterated over and accessed in "for ... in" loops. In this lesson, we wi 阅读全文

posted @ 2020-02-16 22:14 Zhentiw 阅读(112) 评论(0) 推荐(0)

[Debug] Set and remove DOM breakpoints

摘要： When building a web app, sometimes we need to approach it top-down. Modern browser devtools allow us to set breakpoints not only on the JS code but al 阅读全文

posted @ 2020-02-16 22:10 Zhentiw 阅读(118) 评论(0) 推荐(0)

【职业素养】4种让你显得没教养的做法

摘要：教养的本质就是对外的分寸感和对内的克制力哪些行为会让你在职场上显得没有教养呢？ 1. 失信过分相信自己的能力，而夸下的海口，却没有能够完成。 2. 迟到尊重别人的时间颗粒度，你迟到几分钟，可能觉得无所谓，但对他人来讲，并不是一回事，他的时间颗粒度可能比你小很多。如果真的迟到了，一定要诚恳地道阅读全文

posted @ 2020-02-16 21:55 Zhentiw 阅读(256) 评论(0) 推荐(0)

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