Web Reference: Description The join() method returns an array as a string. The join() method does not change the original array. Any separator can be specified. The default is comma (,). Mar 26, 2024 · When working with strings and arrays in JavaScript, two essential methods come in handy: split () and join (). Despite both dealing with data transformation, they operate in opposite... The join() method of Array instances creates and returns a new string by concatenating all of the elements in this array, separated by commas or a specified separator string. If the array has only one item, then that item will be returned without using the separator.
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