對比兩個(gè)數(shù)組不相同數(shù)據(jù)并提取

var arr1 = [0,1,2,3,4,5]
var arr2 = [0,4,6,1,3,9]
function getArrDifference(arr1, arr2) {
    return arr1.concat(arr2).filter(function(v, i, arr) {
      return arr.indexOf(v) === arr.lastIndexOf(v)
    })
  }
  console.log(getArrDifference(arr1,arr2))
  
 //輸出：(4) [2, 5, 6, 9]