将JavaScript字符串拆分为固定长度的片段 [英] Split a JavaScript string into fixed-length pieces

问题描述

我想将字符串拆分为固定长度（例如 N ）。当然，如果原始字符串的长度不是 N 的倍数，则最后一段可能会更短。

I would like to split a string into fixed-length (N, for example) pieces. Of course, last piece could be shorter, if original string's length is not multiple of N.

我需要最快的方法来执行此操作，而且最简单的写作。我一直这样做的方式如下：

I need the fastest method to do it, but also the simplest to write. The way I have been doing it until now is the following:

var a = 'aaaabbbbccccee';
var b = [];
for(var i = 4; i < a.length; i += 4){ // length 4, for example
    b.push(a.slice(i-4, i));
}
b.push(a.slice(a.length - (4 - a.length % 4))); // last fragment

我认为必须有更好的方法来做我想要的。但我不想要额外的模块或库，如果可能的话只需要简单的JavaScript。

I think there must be a better way to do what I want. But I don't want extra modules or libraries, just simple JavaScript if it's possible.

在问之前，我已经看到了一些使用其他语言解决这个问题的解决方案，但是它们的设计并没有考虑到JavaScript。

Before ask, I have seen some solutions to resolve this problem using other languages, but they are not designed with JavaScript in mind.

推荐答案

你可以试试这个：

var a = 'aaaabbbbccccee';
var b = a.match(/(.{1,4})/g);

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