const arrays = [ ["ivr", "web", "wap", "add", "acd"], ["web", "add"], ["ivr", "wap", "add", "web"], ["ivr", "web", "add"], ]; const commons = [...new Set(arrays.flat())] .filter((v) => arrays.filter(v1 => v1 === v).length > 1)
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Discussion on: How to get the common values of an indefinite number of arrays in Javascript
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