Combining a filter and a map-CodePudding

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?

CodePudding user response：

that...

const s = "123 hiu 234234"

console.log( s.match(/[a-z] /ig) )

CodePudding user response：

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)
            );

CodePudding user response：

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