freeCodeCamp/guide/english/javascript/tutorials/add-two-numbers-with-javascript/index.md

title
Add Two Numbers with JavaScript

JavaScript uses the + symbol for addition. It can also be used instead of parseInt() but that is beyond this.

var sum = 10 + 10;

Variables can be added in a similar fashion.

var x = 10;
var y = 10;
var z = x + y;
console.log(z);    // Will print 20 to the console