Adding a break to a for loop: https://stackoverflow.com/questions/9830650/how-to-stop-a-javascript-for-loop indexOf in 2d arrays: https://stackoverflow.com/questions ...
"But it’s also good to know that two-dimensional arrays (2D arrays) exist in JS. "In this article, you will learn what two-dimensional arrays are and how they work in JavaScript. It is quite different ...
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