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JavaScript can be placed in the <body> and the <head> sections of an HTML page.
The <script> Tag
In HTML, JavaScript code must be inserted between <script> and </script> tags.
Example
<script>
document.getElementById("demo").innerHTML = "My First JavaScript";
</script>
JavaScript Functions and Events
A JavaScript function is a block of JavaScript code, that can be executed when "asked" for.
For example, a function can be executed when an event occurs, like when the user clicks a button.
You will learn much more about functions and events in later chapters.
JavaScript in <head> or <body>
You can place any number of scripts in an HTML document.
Scripts can be placed in the <body>, or in the <head> section of an HTML page, or in both.
Incorporating Javascript
Incorporating JavaScript in Your Documents
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