This computer science video is the first in a series of lessons that introduce JavaScript programming. In particular, this lesson covers the script block and the concept of inline scripts within the body section of a web page. It also demonstrates how to write and call a simple JavaScript function, defined within the head section of a web page. This JavaScript function sets the InnerHTML property of a pair of paragraph tags within the body section of a web page. The commands document.write and document.getElementById are demonstrated, as is the built in Date() function. It is assumed you already have some familiarity with HTML and have already done some programming in a high level programming language.