JavaScript confers an even greater ability to create a spectacular document

[adakist]

HTML enables you to take plain text and turn it into an attractively laid out document. It also lets you turn the text into an ugly mess that no one would want to read. JavaScript confers an even greater ability to create a spectacular document, and an even greater ability to create a hideous page that no one will want to read.

[brumbino]

You can also even crash the browser by using the java script.