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mathias's profile
Mathias Bynens
Mathias Bynens
Mathias Bynens
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@mathias

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Mathias BynensVerified account

@mathias

I work on @ChromeDevTools & @v8js at Google and on ECMAScript through TC39. ♥ JavaScript, HTML, CSS, HTTP, performance, security, Bash, Unicode, i18n, macOS.

Munich, Germany
mths.be
Joined January 2007

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    1. Mathias Bynens‏Verified account @mathias 11 Nov 2019
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      • Report NetzDG Violation

      Replacing all occurrences of a substring with another string is a common operation. Unfortunately, doing this correctly is surprisingly hard in JavaScript. 🤯 The new String.prototype.replaceAll API is here to help! 🎉 https://v8.dev/features/string-replaceall …pic.twitter.com/zzwqmXQD91

      43 replies 548 retweets 2,088 likes
    2. Lucas Engel‏ @lucasengel 11 Nov 2019
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      Replying to @mathias @wesbos

      What exactly is the issue with using the regexp?

      1 reply 0 retweets 6 likes
    3. Mathias Bynens‏Verified account @mathias 11 Nov 2019
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      Replying to @lucasengel @wesbos

      It’s explained in the write-up. (Spoiler: you have to remember to escape special RegExp chars + to use the g flag.)

      2 replies 0 retweets 5 likes
    4. Lucas Engel‏ @lucasengel 11 Nov 2019
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      Replying to @mathias @wesbos

      I visited the link after tweeting. Any plans on accepting multiple replacement pairs? 'xaxaxa'.replaceAll('x', 'y', 'a', 'b') // ybybyb

      3 replies 0 retweets 0 likes
    5. Mathias Bynens‏Verified account @mathias 11 Nov 2019
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      Replying to @lucasengel @wesbos

      No such plans, no. RegExps work well for this use case, IMHO.

      1 reply 0 retweets 1 like
    6. pngwn‏ @evilpingwin 11 Nov 2019
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      Replying to @mathias @lucasengel @wesbos

      Why is a knowledge of regexp for this case reasonable but in the original tweet you argue it is unreasonable enough to warrant a new API.

      2 replies 0 retweets 12 likes
      Mathias Bynens‏Verified account @mathias 12 Nov 2019
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      Replying to @evilpingwin @lucasengel @wesbos

      replaceAll solves the common problem of global substring replacement. Wanting multiple replacements is another problem that can be solved by either chaining .replace/.replaceAll calls or (if you need all replacements to happen “at once”) by using RegExp.

      10:01 AM - 12 Nov 2019
      • 1 Like
      • Lucas Engel
      1 reply 0 retweets 1 like
        1. New conversation
        2. pngwn‏ @evilpingwin 12 Nov 2019
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          Replying to @mathias @lucasengel @wesbos

          Yes, I understand that but the point you made in the original tweet was that dropping down to regexp for common cases can be a lot of work (which I sympathise with) but if other equally common cases will still require that I struggle to see the value in this new API.

          2 replies 0 retweets 0 likes
        3. pngwn‏ @evilpingwin 12 Nov 2019
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          Replying to @evilpingwin @mathias and

          I assume the goal is that common global string replacement won't require a knolwedge of regexp but my point is that you'll still need that knowledge for many cases. Which limits the value of this API addition.

          1 reply 0 retweets 0 likes
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