CODEWITHSUNDEEP
javascript
Anatole Lucet
Anatole Lucet

Reputation: 1813

Replace each character of regex match by a another character

If I have this string: foo bar baz qux bar quux quuz, I would like to replace each character of bar by X (foo XXX baz qux XXX quux quuz).

Maybe .replace() can be used in such a way? Obviously a "foo bar baz qux bar quux quuz".replace(/bar/g, "X") wouldn't be enough since it would return foo X baz qux X quux quuz instead of foo XXX baz qux XXX quux quuz.

This is just an example, but I need to use regex. I can't do something like this:

"foo bar baz qux bar quux quuz"
  .split(" ")
  .map(x => x === "bar" ? "X".repeat(x.length) : x)
  .join(" ")

I need the bar to be found by a regex.

Upvotes: 0

Views: 38

Answers (1)

Aplet123
Aplet123

Reputation: 35482

You can use a function to generate the replacement:

"foo bar baz qux bar quux quuz".replace(/bar/g, m => "X".repeat(m.length))

Upvotes: 1

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