var arr1 = [2, 44, 8, 23, 13, 5] var arr2 = [2, 64, 38, 73, 13, 5] var arr = arr1.concat(arr2); console.log(all); var dtr = [] for( var i=0 ; i<arr.length;i++){ for (var j = i+1; j < arr.length; j++) { if (arr[i] == arr[j]) { dtr.push(arr[i]); arr.splice(j,1); } } } console.log(arr); console.log(dtr);

把两组数合成一组在去除重护的数字

去重，，用js去两组数的重数