truncate html text and keep tag safe

[AbraaoAlves]

Sample:

characterFilter('

hello world

', 4)
//

hell...

[BernardoSilva]

Can you provide a more specific use case for this?

Maybe you want to use this on a field that was saved using a rich text editor?

In this case you might end up with empty tags with no content. is that what you expect?

if you have:

characterFilter('<p>Hello<b>World</b></p>', 5);

You would end up with:

<p>Hello<b></b></p>...

This will also cause problems to where the ellipsis would be added.
In this case it would break the formatting because it's outside the

.

Not sure if this adds any value.

Probably the best way for your case could be restrict the characters in your input...