join方法不适用于数组JAVASCRIPT

问题描述

我创建了这个代码，我绘制了一个数组，但今天我将解释这个代码是什么，因为问题是另一个。
我运行一个处理del'arrayelaborazione，问题是当我想删除逗号时，使用join方法不起作用，文本仍然是逗号，怎么可能？这段代码有什么问题？

I created this code that I draw an array, but today I'll explain what is this code because the problem is another.I run a processing del'array "elaborazione", the problem is that when I want to remove the commas, using the join method does not work, the text remains the commas, how is it possible? What is wrong with this code?

for (i = 0; i < count; i++)
{
   var opt = new Option();
   var elaborazione = v[i].split(";");
   elaborazione.splice(2,2);
   elaborazione.join(" ");
   alert("elaborazione => " + elaborazione);
   opt.innerHTML = elaborazione;
   select.add(opt);
}

推荐答案

您需要将加入的字符串保存在 elaborazione 变量中。

You need to save the joined string in elaborazione variable.

使用

elaborazione = elaborazione.join(" ");

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