Different Item between Two Arrays

different-in-two-arrays.js

let differentItems = (arr1, arr2) => {
    let set = new Set()
    let res = []
    let leastArray = arr1.length <= arr2.length ? arr1 : arr2
    let largestArray = arr1.length >= arr2.length ? arr1 : arr2
    
    for(let i=0; i < leastArray.length; i++){
        set.add(leastArray[i].id)
    }
    for(let i=0; i < largestArray.length; i++){
        if(!set.has(largestArray[i].id)){
            res.push(largestArray[i])
        }
    }
    return res
}