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[1, 2, 3].join('my separator');
// "1my separator2my separator3"

[1, 2, 3].join(',');
// "1,2,3"

[1, 2, 3].join(', ');
// "1, 2, 3"

[1, 2, 3].join('sandwich');
// "1sandwich2sandwich3"
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Tue Aug 04 2020 19:23:59 GMT+0000 (UTC) https://www.freecodecamp.org/news/freecodecamp-palindrome-checker-walkthrough/

#javascript #array-methods

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