// slice
arr = [0, 1, 2, 3, 4, 5];
x = arr.slice(1,2);		// no change to arr
console.log(x, arr);	// [ 1 ] [ 0, 1, 2, 3, 4, 5 ]

arr = [0, 1, 2, 3, 4, 5];
x = arr.slice(1,3);		// from arr[1] (inclusive) to arr[3] (exclusive)
console.log(x, arr);	// [ 1, 2 ] [ 0, 1, 2, 3, 4, 5 ]

arr = [0, 1, 2, 3, 4, 5];
x = arr.slice(0,3);		// from arr[0] (inclusive) to arr[3] (exclusive)
console.log(x, arr);	// [ 0, 1, 2 ] [ 0, 1, 2, 3, 4, 5 ]

arr = [0, 1, 2, 3, 4, 5];
x = arr.slice(0);		// == clone
console.log(x, arr);	// [ 0, 1, 2, 3, 4, 5 ] [ 0, 1, 2, 3, 4, 5 ]

arr = [0, 1, 2, 3, 4, 5];
x = arr.slice(-1,3);	// -1 means -1
console.log(x, arr);	// [] [ 0, 1, 2, 3, 4, 5 ]

// splice
arr = [0, 1, 2, 3, 4, 5];
x = arr.splice(1,2);	// mutated arr
console.log(x, arr);	// [ 1, 2 ] [ 0, 3, 4, 5 ]

arr = [0, 1, 2, 3, 4, 5];
x = arr.splice(1,3);	// from arr[1] (inclusive), 3 elements
console.log(x, arr);	// [ 1, 2, 3 ] [ 0, 4, 5 ]

arr = [0, 1, 2, 3, 4, 5];
x = arr.splice(0,3);	// from arr[0] (inclusive), 3 elements
console.log(x, arr);	// [ 0, 1, 2 ] [ 3, 4, 5 ]

arr = [0, 1, 2, 3, 4, 5];
x = arr.splice(0);
console.log(x, arr);	// [ 0, 1, 2, 3, 4, 5 ] []

arr = [0, 1, 2, 3, 4, 5];
x = arr.splice(-1,3);	// -1 means arr.length-1
console.log(x, arr);	// [ 5 ] [ 0, 1, 2, 3, 4 ]