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how to remove duplicates in js array

let arr = [1, 2, 3, 4, 3, 3, 3]

console.log([...new Set(arr)])
// (4) [1, 2, 3, 4]

let arr = [1, 2, 3, 4, 3, 3, 3, 'foo', true]

console.log([...new Set(arr)])
//(6) [1, 2, 3, 4, 'foo', true]
Source by stackoverflow.com #
 
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Tagged: #remove #duplicates #js #array
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