Console.log将数组转换为逗号分隔的值

测试-1

let myArray = [1,2,3]
function arrayCounter (array1) {
    console.log(`this is statement ${array1}`);
}
arrayCounter(myArray)

测试-2

let myArray = [1,2,3]
function arrayCounter2 (array1) {
    console.log("this is statement " + array1);
}
arrayCounter2(myArray)

O/P=>这是报表1,2,3

测试-3

let myArray = [1,2,3]
console.log(myArray)

O/P=>[1,2,3]

测试-1 测试-2 预期O/P应为本is报表[1,2,3]

那么,为什么会发生这种情况?我不明白有什么情况。