Introduction to JavaScript

JavaScript is a scripting language which allows you to make web pages more interactive and dynamic. With JavaScript, you can access and modify web contents. You can also specify a set of rules on how to access or modify page contents. JavaScript also alows you to react to specific events triggered by user or browswer such as click of a button and how to handle them.

This is a simple script which adds a greeting into an HTML page. The greeting changes depending on the time of day. Don't worry about it for now. Everything will be covered in the upcoming chapters.

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