converting arrays and set objects to each other

The conversion between the array and the set object can implement the deduplication of the array (the array can be duplicated, the set cannot be duplicated)

1. Converting an array object to a set object

var arr = [1,2,3,4,5,6,7,6,6,7];console.log (arr); var s = new Set (arr); Console.log (s);

2. Converting a set object to an array

var s = new Set ([1,2,3,4]); Console.log (s); var arr2 = [... s];console.log (ARR2);

converting arrays and set objects to each other