js如何判斷兩個數組的元素是否完全相同

這里的完全相同指的是這種情況:

var arr1 = [1, 2, 3]
var arr2 = [1, 3, 2]

或者

var arr1 = [1, 2, 3]
var arr2 = [1, 2, 3]

方法如下:

var arr1 = [1, 2, 3]
var arr2 = [1, 3, 2]

function same(arr1, arr2) {
    if (arr1.length !== arr2.length) {
        return false
    }
    return arr1.every(item => arr2.indexOf(item) > -1)
}

console.log(same(arr1, arr2))