javascript 将字符串拆分为等长字符串数组
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Split string into array of equal length strings
提问by trumank
I have a string that I need split into smaller strings with an equal length of 6. I tried using:
我有一个字符串，我需要将其拆分为长度为 6 的较小字符串。我尝试使用：
'abcdefghijklmnopqrstuvwxyz'.split(/(.{6})/)
But it returns an array with empty strings like so:
但它返回一个包含空字符串的数组，如下所示：
["", "abcdef", "", "ghijkl", "", "mnopqr", "", "stuvwx", ""]
回答by Rob W
Use matchin 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.
使用match与全球标志一起，而不是分裂。{1,6}需要，还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}只会匹配字符串末尾的少于 6 个字符。
'abcdefghijklmnopqrstuvwxyz'.match(/.{1,6}/g);
Result:
结果：
["abcdef", "ghijkl", "mnopqr", "stuvwx", "yz"];
Note that the returned object is a true array. To verify:
请注意，返回的对象是一个真正的数组。验证：
console.log('.'.match(/./g) instanceof Array); //true
