freeCodeCamp/guide/spanish/certifications/javascript-algorithms-and-d.../basic-javascript/decrement-a-number-with-jav.../index.md

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2018-10-12 19:37:13 +00:00
---
title: Decrement a Number with JavaScript
localeTitle: Disminuir un número con JavaScript
---
## Disminuir un número con JavaScript
Disminuye un número usando el operador '-':
```
var a = 5;
a--; // Now, 'a' is 4
--a; // Now, 'a' is 3
```