js 两数组去除重复数值的实例

//两数组去除重复数值
mergeArray: function(arr1, arr2) {
 for (var i = 0; i < arr1.length; i++) {
  for (var j = 0; j < arr2.length; j++) {
   if (arr1[i] === arr2[j]) {
    arr1.splice(i, 1); //利用splice函数删除元素，从第i个位置，截取长度为1的元素
   }
  }
 }
 //alert(arr1.length)
 for (var i = 0; i < arr2.length; i++) {
  arr1.push(arr2[i]);
 }
 return arr1;
}