jeena/en.javascript.info
1
0
Fork 0
Code Issues Pull requests Projects Packages Wiki Activity Actions

fixes

Browse source
This commit is contained in:
Ilya Kantor 2019-07-18 19:41:21 +03:00
parent 807414b288
commit 94a6933294
4 changed files with 25 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

7
1-js/09-classes/01-class/article.md
View file

@ -119,7 +119,7 @@ alert(Object.getOwnPropertyNames(User.prototype)); // constructor, sayHi
## Not just a syntax sugar
Sometimes people say that `class` is a "syntax sugar" (syntax that is designed to make things easier to read, but doesn't introduce anything new) in JavaScript, because we could actually declare the same without `class` keyword at all:
Sometimes people say that `class` is a "syntax sugar" (syntax that is designed to make things easier to read, but doesn't introduce anything new), because we could actually declare the same without `class` keyword at all:
```js run
// rewriting class User in pure functions
@ -147,7 +147,7 @@ Although, there are important differences.
1. First, a function created by `class` is labelled by a special internal property `[[FunctionKind]]:"classConstructor"`. So it's not entirely the same as creating it manually.
Unlike a regular function, a class constructor can't be called without `new`:
Unlike a regular function, a class constructor must be called with `new`:
```js run
class User {
@ -176,8 +176,7 @@ Although, there are important differences.
3. Classes always `use strict`.
All code inside the class construct is automatically in strict mode.
Also, in addition to its basic operation, the `class` syntax brings many other features with it which we'll explore later.
Besides, `class` syntax brings many other features that we'll explore later.
## Class Expression