Question

In JavaScript assume I have a string: “test test hello test test”

I know how to replace the ‘hello’ with ‘byebye’:

replace("hello","byebye");

But what is the best way to add ‘byebye’ right after ‘hello’, so my string will become: “test test hello byebye test test”, using regex?

Thanks.

Answer 1

The best way, would be to use a capturing group. Like this:

replace(/(hello)/, "$1 byebye");

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