javascript - 将给定的字符串拆分为数组

Question

假设给定的字符串是:

[[1]] is for cars, as [[2]] is for bikes

当[[any number]](例如:[[1]]、[[2]]时，我想使用正则表达式或任何其他方式将字符串拆分为字符串数组) 遇到。

[ 
   [[1]], 
   " is for cars, as ", 
   [[2]],
   " is for bikes"
]

What I have tried: 

"[[1]] is for cars, as [[2]] is for bikes".split(/\[\[(\d+)\]\]/gi);

This returns ",1, is for cars, as ,2, is for bikes"

Answer 1

您的代码中有几个问题:

1. .split在错误的地方使用捕获组，即您只捕获数字而不是 [[<digits>]]
2. 由于在开始时也发现了拆分模式，因此您需要使用 .filter从结果数组中删除空字符串的方法。

const str = "[[1]] is for cars, as [[2]] is for bikes";
var arr = str.split(/(\[\[\d+\]\])/gi).filter(Boolean);
console.log(arr);
/*
[
  "[[1]]",
  " is for cars, as ",
  "[[2]]",
  " is for bikes"
]
*/