JavaScript 正则表达式用于隔离单词/拆分单词

Question

I'm trying to separate multiple words in a string, without removing anything, and form them into an array. I'm using the.split method but can't find the exact pattern for multiple words and including spaces.

my string is:

const testSentence = 'a foxy dog met a dogged fox';

I want to split it at the words 'dog' and 'fox', so I get the array:

['a foxy ','dog',' met a dogged ','fox']

I've tried various combinations but nothing is working for all parts, so any pointers would be much appreciated.

Answer 1

Using a non-capturing group in combination with word boundaries would do it:

 const s = 'a foxy dog met a dogged fox'; const r = s.split(/(?:\b(dog|fox)\b)/); console.log(r);

If the empty segments bother you, you can easily filter them out:

 const s = 'a foxy dog met a dogged fox'; const r = s.split(/(?:\b(dog|fox)\b)/).filter(x => x); console.log(r);