freeCodeCamp/guide/english/certifications/javascript-algorithms-and-data-structures/basic-javascript/decrement-a-number-with-javascript/index.md

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Decrement a Number with JavaScript

Decrement a Number with JavaScript

Decrement a number using the '--' operator:

var a = 5;
a--; // Now, 'a' is 4 
--a; // Now, 'a' is 3