--- title: Compound Assignment With Augmented Addition --- ## Compound Assignment With Augmented Addition <!-- The article goes here, in GitHub-flavored Markdown. Feel free to add YouTube videos, images, and CodePen/JSBin embeds --> Computers read from left to right. So, using the '+=' operator means that the variable is added with the right number, then the variable is assigned to the sum. Like so: var a = 9; a += 10; // Now, 'a' is equal to 19