Basics

• OO language
• Loosely typed
• Must declare variables with var
• Declare functions with function
• End lines with a semi-colon
• Include comments within /* ... */ or single-line comments can start with //
• Close tie-in with HTML: e.g.
  document.write()
  will write to the current page.
• Can also manipulate the DOM

HTML Notes

• Often start with an empty or hidden <div> and do something with it
• Often use the id= attribute to label and identify a specific element
• HTML5 canvas allows drawings and graphics

Integrating JavaScript

Can have JavaScript inline:

<script type='text/JavaScript'>
function doSomething(in1, in2)
{
    return(in1 * in2);
}
document.write(doSomething(5, 7));
</script>

Result

Can trigger JavaScript from buttons, links, etc.:

<button onclick='doSomething();'>Do Something!</button>

Can import JavaScript from a file:

<script src="myfile.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>

Making things easier

• JQuery
• Bootstrap