This is just a very simple example, of cause you could write it like that.
Maybe my second example is unsuitable, how about this one: input.replace(/your \w+ from \w+/, a => a.toUpperCase(), b => b.toLowerCase()); INPUT: your friend from USA OUTPUT: your FRIEND from usa Actually, I am not very familiar with regex, I wonder if there is any performance issue if we support this kind of feature. > 在 2018年9月7日，下午10:13，Peter Jaszkowiak <[email protected]> 写道： > > You do know that all capture groups are passed to the function, right? You > can write your second example like this, even though the capture groups are > totally useless: > > ``` > input.replace( > /your (\w+) from (\w+)/g, > (whole, a, b) => 'your book from amazon' > ); > ``` > > On Fri, Sep 7, 2018, 07:23 sion <[email protected] > <mailto:[email protected]>> wrote: > > Is it possible to enhance the string.prototype.replace(regex, func) ? > > By now, we can do something like this: > > input.replace(/(^|_)[a-z]/g, a => a[a.length - 1].toUpperCase()); > INPUT: ab_cd_ef OUTPUT: abCdEf > > > However, i want something more powerfull, like this: > > input.replace(/your (\w+) from (\w+)/g, a => 'book', b => 'amazon’); > INPUT: your friend from china OUTPUT: your book from amazon > > As you can see, I just want the replace could replace multi fragments at the > same time. And I don’t think there is any conflicts with other principles of > string.prototype.replace. > > _______________________________________________ > es-discuss mailing list > [email protected] <mailto:[email protected]> > https://mail.mozilla.org/listinfo/es-discuss > <https://mail.mozilla.org/listinfo/es-discuss>
_______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
