Is the "type" attribute important enough to basically always include in your opening <script> tag, or can it be optional these days. I've heard a couple different opinions on this - both strict and non-strict views actually. What's the best practice in majority of serious professional work environments?
If validation is important to you, and your documents are HTML 4.01 or XHTML, yes, type is required. If your document is HTML5, then no.