Is it possible to combine a map and a filter in a single javascript expression? For example, I am currently doing the following to trim whitespace and remove empty results:
const s = "123 hiu 234234"
console.log(s
.split(/\d+/g)
.filter((item, i) => item.trim())
.map((item, i) => item.trim())
);
Is there a more compact way to do that? And, as a follow up question, is the /g necessary when doing split or does that automatically split every occurrence?
that...
const s = "123 hiu 234234"
console.log( s.match(/[a-z]+/ig) )If a single word comes between the numbers, I think a single regular expression would be enough here - just match non-whitespace, non-digits:
const s = "123 hiu 234234"
console.log(s
.match(/[^\d ]+/g)
);One way to do it would also be to define a function that takes two arguments that you can call which does the task. For example:
const s = "123 hiu 234234"
const Trim = (item, i) => item.trim();
console.log(s.split(/\d+/).filter(Trim).map(Trim));Or you could put the burden on the regex itself, for example only matching letters:
s="123 hiu 234234"
console.log(s.match(/[a-zA-Z]+/g));
// /[a-z]+/gi alternately