Link to my previous post that shows code. One of the problems i’m tried to address in markdown previewer is how to add target="_blank" in generated link. There’s no a css way of doing it and only answer i found is in jquery and javascript. This also works for title attribute which is used for tooltips. Rest as i said to @camperextraordinaire it can be done in vanilla js. Problem occurs when something needs to be done onload i.e when doocument load. It can be done by using jquery inside componentDidMount() but i don’t know how to do it in plain js.