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Editorial Team
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Editorial Team
Asked: June 18, 20262026-06-18T14:31:57+00:00 2026-06-18T14:31:57+00:00

How can I turn an array, such as [Susy, John, Mary] to Susy, John,

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How can I turn an array, such as ["Susy", "John", "Mary"] to "Susy, John, and Mary" in Javascript? I can’t get Ruby’s to_sentence method out of my head.

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  1. Editorial Team
    Editorial Team
    2026-06-18T14:31:58+00:00Added an answer on June 18, 2026 at 2:31 pm

    Join all items except the last one, and then add that:

    var s = arr.slice(0, arr.length - 1).join(', ') + ", and " + arr.slice(-1);
    

    Demo: http://jsfiddle.net/JYKcK/1/

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