Web Reference: You'll learn how to use the JavaScript concat () method to concatenate strings and return a new string that contains the combined strings. Description The concat() method joins two or more strings. The concat() method does not change the existing strings. The concat() method returns a new string. Jan 17, 2026 · When you have an array of strings and want to join them together, the join () method is a great choice. It concatenates all elements in an array into a single string, with an optional separator between them.
YouTube Excerpt: In this video, the part 15 of my Array Methods Explained series, I simplified the
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