Remember, the function contains exists in Java, but in JavaScript, it’s deprecated and replaced by includes. The division is done by searching for a pattern where the pattern is provided as the first parameter in the method's call. To check if one string is a substring of another one in JavaScript, there’s a built-in function includes. () The split () method divides a String into an ordered list of substrings, puts these substrings into an array, and returns the array. Since 580+ people have voted for an incorrect answer, and 800+ have voted for a working but shotgun-style answer, I thought it might be worth redoing my answer in a simpler form that everybody can understand. Check if a string contains another string.
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