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

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Increment a Number with JavaScript

Increment a Number with JavaScript

You can easily increment (add one) to a number variable by using the '++' increment operator. For example:

var a = 6;
a++; // Now, 'a' is equal to 7 -- post-fixing
++a; // Now, 'a' is equal to 8 -- pre-fixing