Read how JavaScript integrates with HTML: (1) coded in an external .js file and referenced within , (2) embedded within .. < script> in the

Read how JavaScript integrates with HTML: (1) coded in an external .js file and referenced within , (2) embedded within in the . What are the benefits of each ?

Is JavaScript case-sensitive, delimited with semi-colons, and free-format?

Never mix identifiers (to name variables, functions, objects, properties, methods, and events) with keywords

Book examples show how easy it is to work with Number, String, and Boolean data values. For instance, is 11 % (19 - 8) equivalent to 0?

What results from:

window.alert(window.location); and..

alert(today.toDateString()); and..

var amt = parseFloat(document.getElementByld("amount"). value).toFixed(2);

Practice with JS statements, such as ifs, loops, using arrays, and function expressions. Note the importance of the "use strict"; directive at the start of your JS code. Also notice how JS attaches a function to an event by preceding the event name with "on" - Query has a better way to do this! Should event handlers be attached 'after' the DOM is loaded from the HTML? Download our book ZIP files