![[codewars] (8kyu) Basic Training: Add item to an Array Guide](https://i.ytimg.com/vi/1K-8c-T9bps/mqdefault.jpg)
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Last Updated: October 15, 2026
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In this short video, we tackle the simple problem of this one we just fill in the blanks. this one uses the trim() method trim() info: ... using concat() and reduce() on this one. this one uses a for() loop, an if() statement, and the join() method kata link: ... standard example of using the reduce() method. another .split() video; seems .split() is a pretty common method. here we use reduce() and the unary plus operator. this one has the reduce() method and the Math.floor() function. Code along with me as we solve ' Sum Mixed a bit about classes and template literals classes info: developer.mozilla.org/en-US/docs/Web/ updated version: youtu.be/FIFdWcEO_-M using the
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