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

specs

Browse source
This commit is contained in:
Ilya Kantor 2019-06-21 09:01:15 +03:00
parent 3d009bfa14
commit 382d4e513f
11 changed files with 64 additions and 29 deletions
Download patch file Download diff file Expand all files Collapse all files

7
1-js/06-advanced-functions/05-global-object/article.md
View file

@ -16,7 +16,7 @@ alert("Hello");
window.alert("Hello");
```
In a browser, global variables declared with `var` become the property of the global object:
In a browser, global functions and variables declared with `var` become the property of the global object:
```js run untrusted refresh
var gVar = 5;
@ -82,6 +82,5 @@ if (!window.Promise) {
...But more often is referred by "old-school" environment-specific names, such as `window` (browser) and `global` (Node.js). As `globalThis` is a recent proposal, it's not supported in non-Chromium Edge (but can be polyfilled).
- We should store values in the global object only if they're truly global for our project. And keep their number at minimum.
- In-browser, unless we're using [modules](info:modules), a global variable declared with `var` becomes a property of the global object.
To make the code easier to understand and more future-proof, we should access properties of the global object directly, as `window.x`.
- In-browser, unless we're using [modules](info:modules), global functions and variables declared with `var` become a property of the global object.
- To make our code future-proof and easier to understand, we should access properties of the global object directly, as `window.x`.