So for running in browsers it’s probably still a bit too early in 2021 with matchAll, for running in nodejs it depends what nodejs you have installed. However, there’s the caveat that matchAll wasn’t always there (like match and exec), so you should consider whether your target runtime supports it: NodeJS: >= 12 Chrome: >= 73 Edge: >= 79 Firefox: >= 67 IE: nah Opera: 60 Safari: 13 Of course this choice has a reasonable foundation in that iterables scale better for larger outputs, so consider carefully if you actually want to convert it. With the spread operator you can create an array from the result though. It’s still a bit cumbersome to use, since it doesn’t just return an array but an iterable instead. MatchAll, like its small brother match, is a method available on string that will take a regex as an argument: const testString = 'this hat is better than that hat.' Ĭonst result = Since both, match and exec have severe shortcomings, the new method matchAll was introduced.
Why exec you can still see the groups for multiple matches: const testString = 'this hat is better than that hat.' Īs you can see, this is quite ugly, since you need to a cumbersome while loop, and we all know where those all too quickly lead us, and we all know where those all too quickly lead us, and we all know where those all too quickly lead us. Input: 'this hat is better than that hat.',Įxec is in a sense the exact opposite of match: It is a method available on a regex which takes a string as an argument: regex.exec(str). Without the g flag you can also use it to get groups, but you’ll only see the first match: const testString = 'this hat is better than that hat.' Match can help if you want an array of all matches, but you don’t care about the matched groups: const testString = 'this hat is better than that hat.' Ĭonsole.log(result) // Output: Match is a method which is available on string and takes a regex as an argument, so you can call it like str.match(regex).
However, unfortunately there are at least three methods to get you those results, each of which has their advantages and drawbacks.
It sounds like the most easy task in the world: getting your match results from a regex.
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