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 (,). May 29, 2014 · var res = str.split("-"); var newStr = res.join('-'); This should also work for your updated question, as it will only remove the first 2 from the string. let split_str = str.split(""); console.log(split_str); let join_arr = split_str.join(""); console.log(join_arr); Jun 24, 2020 · Split and Join method can use to a string with an array or useful for static find-and-replace. As per name indicates split () function breaks up a string at the specified separator and the joint () function is joined by the string separator.
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