javascript - 在 2 个分隔符之间拆分字符串并包含它们

Question

给出以下字符串...

"Here is my very _special string_ with {different} types of _delimiters_ that might even {repeat a few times}."

...如何使用 2 个分隔符(“_”、“{ 和 }”)将其拆分为一个数组，但还要将分隔符保留在数组的每个元素中？

目标是:

[
  "Here is my very ", 
  "_special string_", 
  " with ", 
  "{different}", 
  " types of ", 
  "_delimiters_", 
  "that might even ", 
  "{repeat a few times}", 
  "."
]

我最好的选择是:

let myText = "Here is my very _special string_ with {different} types of _delimiters_ that might even {repeat a few times}."

console.log(myText.split(/(?=_|{|})/g))

如您所见，它无法重现所需的数组。

Answer 1

您可以使用

s.split(/(_[^_]*_|{[^{}]*})/).filter(Boolean)

见 regex demo .整个模式包含在一个捕获组中，因此所有匹配的子字符串都包含在 String#split 之后的结果数组中.

正则表达式详细信息

(_[^_]*_|{[^{}]*}) - 捕获组 1:

_[^_]*_ - _ , 0 个或更多字符而不是 _然后是 _

| - 或

{[^{}]*} - 一个 { , 然后是 { 以外的任何 0 个或多个字符和 }然后是 }

参见 JS 演示:

var s = "Here is my very _special string_ with {different} types of _delimiters_ that might even {repeat a few times}.";
console.log(s.split(/(_[^_]*_|{[^{}]*})/).filter(Boolean));