Tumblr blog themes are fully customizable; you can edit your theme's HTML code to add additional scripts, content or anything else that can be inserted with HTML. Many Tumblr add-ons found ...

It isn't unusual for novice and skilled developers alike to copy commonly used commands from a webpage (ahem, StackOverflow) and paste ... JavaScript code hidden behind the PoC HTML page setup ...

Copy-and-paste as an active learning strategy Far from being merely a lazy shortcut, copying content (whether a paragraph of text or a snippet of code) can serve as an active learning strategy.