I think bodytag need to be defined, otherwise it was giving error for me
var bodytag = document.body
I think bodytag need to be defined, otherwise it was giving error for me
var bodytag = document.body
Looks like we didn't add "heading" Id earlier to <b> . So, correcting this looks like below:
in html file inside body
in Js Console
> hello_world = document.getElementById("heading")
> hello_world.style.fontSize = "100px" //need to explicitly mention px to render the text