Remove duplicate Objects within an Array by Object key.

function removeDuplicateObjectsByKey(array, fieldToDuplicateCheck) { const newArray = [] const arrayKeys = [] array.forEach((item) => { // check if we don't already have the value within the arrayKeys array if (!arrayKeys.includes(item[fieldToDuplicateCheck])) { // push this value to the arrayKeys array arrayKeys.push(item[fieldToDuplicateCheck]) // push this object to the newArray array newArray.push(item) } }) // return the newArray with the filtered out duplicate objects return newArray } // A test array of objects. In a real world situation you would have more than just the 'name' key on the objects const initialArrayOfObjects = [ { name: '🐑', }, { name: '🐑', }, { name: '🐫', }, { name: '🦕', }, { name: '🦕', }, ] // will filter out the duplicates by the 'name' field let removeDuplicateObjects = removeDuplicateObjectsByKey(initialArrayOfObjects, 'name') // [ { name: '🐑' }, { name: '🐫' }, { name: '🦕' } ]