将字符串拆分为等长字符串的数组 [英] Split string into array of equal length strings

问题描述

我有一个字符串，我需要拆分成较小的字符串，长度相等6.我尝试使用：

I have a string that I need split into smaller strings with an equal length of 6. I tried using:

'abcdefghijklmnopqrstuvwxyz'.split(/(.{6})/)

但它返回一个空的数组像这样的字符串：

But it returns an array with empty strings like so:

["", "abcdef", "", "ghijkl", "", "mnopqr", "", "stuvwx", ""]

推荐答案

使用匹配与全局标志匹配，而不是拆分。需要 {1,6} ，以包括匹配字符串的最后一部分。默认情况下，模式是贪婪的，这意味着尽可能多地匹配。因此，。{1,6} 只会在字符串末尾匹配少于6个字符。

Use match in conjunction with a global flag, instead of split. {1,6} is needed, to also include the last part of the matched string. Patterns are greedy by default, which means that as much is matched as possible. So, .{1,6} will only match less than 6 characters at the end of a string.

'abcdefghijklmnopqrstuvwxyz'.match(/.{1,6}/g);

结果：

["abcdef", "ghijkl", "mnopqr", "stuvwx", "yz"];

_{请注意，返回的对象是一个真正的数组。验证：}

_{Note that the returned object is a true array. To verify:}

console.log('.'.match(/./g) instanceof Array);  //true

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