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Lavrentiy Rubtsov 2022-05-17 20:24:34 +06:00 • committed by GitHub
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1-js/02-first-steps/04-variables/article.md
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@ -104,6 +104,7 @@ For instance, the variable `message` can be imagined as a box labeled `"message"
We can put any value in the box. We can put any value in the box.
We can also change it as many times as we want: We can also change it as many times as we want:
```js run ```js run
let message; let message;
@ -261,7 +262,6 @@ myBirthday = '01.01.2001'; // error, can't reassign the constant!
When a programmer is sure that a variable will never change, they can declare it with `const` to guarantee and clearly communicate that fact to everyone. When a programmer is sure that a variable will never change, they can declare it with `const` to guarantee and clearly communicate that fact to everyone.
### Uppercase constants ### Uppercase constants
There is a widespread practice to use constants as aliases for difficult-to-remember values that are known prior to execution. There is a widespread practice to use constants as aliases for difficult-to-remember values that are known prior to execution.