what is the regex pattern for the string '<3' and ':)'?

Question

what is the regex pattern for the string

<3

and

:)

I have tried /<\s*3/g /<\d*3/g /<\.*3/g for <3 but its not working. it is matching in online regex editor but not working on my system.

el.innerHTML = el.innerHTML.replace(/<\s*3/g, '<img src="./img/heart-red.png" alt=""/> ')

Answer 1

Try /<3/g and /(?:<|&lt;)3/g, It should work.