Javascript Code To Do Insertion Sort

const arr = [3,2,1,4,6,5,7,9,8,10]

const insertionSort = arr => {
    let currentVal
    
    for (let i = 0; i < arr.length; i++) {
        currentVal = arr[i]

        for (var j = i-1; j >= 0 && arr[j] > currentVal; j--) {
            arr[j+1] = arr[j]
        }
        
        arr[j+1] = currentVal
    }
    
    return arr
}

insertionSort(arr)
console.log(arr) // [1,2,3,4,5,6,7,8,9,10]