在JavaScript对象列表的末尾添加元素 [英] Add an element at the end of a list of objects in JavaScript

问题描述

我有一个这样的列表作为输入:

I have a list like this as an input:

{value: 1, rest: {value: 2, rest: null}}

我想在列表中添加一个元素并将其放置以便获得以下输出:

I want to add an element to the list and place it in order to have this output:

{value: 1, rest: {value: 2, rest: {value 3, rest:null}}}

我设法使用以下函数在元素的开头添加了元素，但是我应该如何使其在元素的结尾添加元素?谢谢.

I managed to add the element at the beginning using the following function but how should I make it to add the element at the ending? Thanks.

function prepend(elem, list){

  list = {value:elem, rest:list};
  return list;
}
console.log(prepend(3, {value: 1, rest: {value: 2, rest: null}}));

输出为: {value:3，rest:{value:1，rest:{value 2，rest:null}}}

推荐答案

尝试一下.我做了一个递归函数.

Try this. I made a recursive function.

function prepend(elem, list){
   if (list.rest == null)
      list.rest = {value:elem, rest:null};
   else
     prepend(elem, list.rest);
   return list;
}

在所有情况下都可以使用此功能.

This function can be used in all cases.

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