Open a new tab in browser with custom html code. Javascript -

this question has answer here:

• open url in new tab (and not new window) using javascript 25 answers

how have function opens new tab in browser custom html generated in root tab?

you can this

var x=window.open(); x.document.open().write('<h1>test</h1>'); x.close(); 

note cannot force new tab user preference (of new window / new tab)