如何删除使用从参数数组元素对象 - 这有什么错我的code？ [英] How to remove elements from an array using arguments object - what's wrong with my code?

问题描述

我试图从上一个函数作为参数传递的数组删除元素。我想从数组中删除的元素是那些相同功能的以下参数。像这样：驱逐舰（[1，2，3，1，2，3，2，3）; 因此，如果阵列（驱逐舰的第一个参数）中含有2 和3，我希望他们删除。因此，调用函数应该返回[1,1]。

I am trying to remove elements from an array that is passed on a function as an argument. The elements that I am trying to remove from the array are the ones equal to the following arguments of the function. Like this: destroyer([1, 2, 3, 1, 2, 3], 2, 3); so if the array (first argument of destroyer) contains "2" and "3", I want them removed. So calling the function should return [1, 1].

function destroyer(arr) {

  var args = [];

  for(var j = 1; j<arguments.length; j++){

      args.push(arguments[j]);

    for(var i = 0; i<arr.length; i++){

        if(args.indexOf(arr[i]) > -1){

            arr.splice(i, 1)
        }
    }
  }
  return arr;
}

destroyer([1, 2, 3, 1, 2, 3], 2, 3);

我不明白为什么我的code适用于驱逐舰（[1，2，3，1，2，3，2，3）; （它返回[1,1]），但不用于破坏者（[2，3，2，3]，2，3）; （它应该返回[]，但返回[3]）。

I don't understand why my code works for destroyer([1, 2, 3, 1, 2, 3], 2, 3); (it returns [1, 1]) but not for destroyer([2, 3, 2, 3], 2, 3); (it should return [], but returns [3]).

请帮我明白为什么这是行不通的。

Please, help me understand why this doesn't work.

我在 https://repl.it/BTu5

推荐答案

在privous答案是正确的，
但我得到的东西的工作，它更类似问题的code，使他明白了：
   code：

the privous answer is right, but i got something working , it's more similar to the question's code, help him to understand: code:

 function destroyer(arr) {

 var args = [];
  //You want add all the nums you want remove from array, so you start from 1, which means second arg,first arg is the array you want to perform
  for(var j = 1; j<arguments.length; j++){ 
  //You store the args to an arg array
      args.push(arguments[j]);
    //Once you have the arg, you want loop the target array, see if the newly added arg exist in the target array, if it is, then remove it
    for(var i = 0; i<arr.length; i++){
        //Found it, remove it now! note: your found the index, then you need take it out, check the doc for slice function arr.slice([begin[, end]]) https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
        if(args.indexOf(arr[i]) > -1){
            //key change, remove the element 
            arr.splice(i, i+1)
           }
       }
   }
  return arr;
  }
 destroyer([2, 3, 2, 3], 2, 3);

`

此外，已为您创建一个播放

Also, have created a play for you

https://repl.it/BTu5/5

例如：片（1,4）中提取所述第二元件到第四元件（元素索引1，2，和3）

example: slice(1,4) extracts the second element up to the fourth element (elements indexed 1, 2, and 3).

这篇关于如何删除使用从参数数组元素对象 - 这有什么错我的code？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！