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摘要: Unlike JavaScript's const variable declarations, TypeScript allows you to create fully immutable types. In this lesson, we learn how to create immutab 阅读全文
posted @ 2020-02-26 00:25 Zhentiw 阅读(674) 评论(0) 推荐(0)
摘要: There might be cases where you have selective data for your entities. Let's say that you are building a public API endpoint to get all the registered 阅读全文
posted @ 2020-02-26 00:15 Zhentiw 阅读(152) 评论(0) 推荐(0)
摘要: The component we test against: import {Component, OnInit} from '@angular/core'; import {Course} from "../model/course"; import {Observable} from "rxjs 阅读全文
posted @ 2020-02-25 19:55 Zhentiw 阅读(351) 评论(0) 推荐(0)
摘要: What makes objects different is that we can create more of them. Every time we use the {} object literal, we create a brand new object value: let shre 阅读全文
posted @ 2020-02-25 18:46 Zhentiw 阅读(105) 评论(0) 推荐(0)
摘要: When you give an element an id attr, it will automaticlly create a object with the same name of id: <form id="theform" action="/" method="post"> <labe 阅读全文
posted @ 2020-02-25 02:22 Zhentiw 阅读(148) 评论(0) 推荐(0)
摘要: Let's see a simple code example: let pet = "dog" console.log(pet) We have console.log(pet) inside the code, when you read it, you might say: Pass ´pet 阅读全文
posted @ 2020-02-24 18:39 Zhentiw 阅读(142) 评论(0) 推荐(0)
摘要: It can be confusing to understand when and how the .prototype and .proto properties are created and used. They both seem to imply having something to 阅读全文
posted @ 2020-02-21 20:36 Zhentiw 阅读(205) 评论(0) 推荐(0)
摘要: "let" keyword, the same as "const" does hoist the variable. But different from 'var', it does both hoist and assign value as "undefined". "let" in oth 阅读全文
posted @ 2020-02-21 19:48 Zhentiw 阅读(114) 评论(0) 推荐(0)
摘要: Continue with previous post: https://www.cnblogs.com/Answer1215/p/12342540.html Now we need to think about functionExpression and ArrowFunction: funct 阅读全文
posted @ 2020-02-21 19:13 Zhentiw 阅读(464) 评论(0) 推荐(0)
摘要: Continue with the previous post: https://www.cnblogs.com/Answer1215/p/12337243.html What we want to do in this post, is adding parent function name in 阅读全文
posted @ 2020-02-21 18:41 Zhentiw 阅读(284) 评论(0) 推荐(0)
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