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)); //输出:(4) [2, 5, 6, 9]