javascript - 如何将字符串中每个引用的句子放入数组(javascript)

Question

我有一个看起来像这样的字符串:

var message = '"this is a question" "answer one" "answer two" "answer three"';

我希望字符串引号内的每个句子都在这样的数组中:

array = ["this is a question", "answer one", "answer two", "answer three"];

我如何在 JavaScript 中实现这一点？谢谢。

Answer 1

你试过 str.split() 了吗？

const array = message.split(/\s(?=")/);
//This regex searches for a space, but makes sure it has a " after it.

文档: https://www.w3schools.com/jsref/jsref_split.asp

以防万一你想分解正则表达式:

/ start of regex
  \s escaped character: whitespace
  (?= start of positive lookahead
    " literal character: quotation mark
  ) end of positive lookahead
/ end of regex

编辑:Oskar Grosser 在评论中说，有时这行不通。这是对此的修复:

/(?<=[^\\]?")\s+(?=")/

分割:

/ start of regex
  (?<= start of positive lookbehind
    [^ start of negated charset (in case there was any \"s)
      \\ escaped literal character: backslash (\)
    ] end of negated charset
    ? quantifier: 0 or 1 (in case it was at the beginning)
    " literal character: quotation mark (")
  ) end of positive lookbehind
  \s escaped character: whitespace
  + quantifier: 1 or more (for in case there was 2 whitespace instead of 1)
  (?= start of positive lookahead
    " literal character: quotation mark (")
  ) end of positive lookahead
/ end of regex

请注意，lookbehinds 在某些浏览器上有效，但并非在所有浏览器上都有效。