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Treehouse Club: JavaScript

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HTML Comments and JavaScript

2:08 with Joy Kesten

In this course you are going to learn about how to use comments to explain what's going in an HTML document. You will also learn how about the button, audio and JavaScript and how they all work together.

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    In this video, we're going to be finishing up learning about the index.html document, 0:00
    and show you around the JavaScript. 0:07
    To do this, I'm going to talk about the button, audio tags and 0:09
    JavaScript all at the same time. 0:13
    Because really they're all related. 0:16
    If you feel like I'm going through this a bit quickly, 0:18
    that's because this video is just meant to get you editing, and 0:21
    we'll go through everything line by line later on. 0:25
    In the body we're using a lot of new features. 0:29
    I've used comments to try and locate, what each feature does. 0:32
    At the top we have the car image, which you should know all about. 0:37
    Next we have some buttons for our key, steering wheel, and nitrous oxide, and 0:41
    then some audio files, where each of those are going to make a sound, and 0:47
    some JavaScript which tells the browser to play the sound when click on the Button. 0:52
    I wanna point out three special keywords located in the Button, 0:58
    Audio and JavaScript. 1:03
    It's StartCar, Honk horn and Peel out. 1:05
    And you can find them in all three locations, 1:09
    because they're gonna work together. 1:12
    Up here, it's gonna be the value in our link attribute. 1:14
    In our Audio it's going to be the value in our ID Attribute, 1:18
    and then our JavaScript it's going to be the name for our function. 1:22
    While you're editing, keep in mind that if you're changing one of 1:27
    these special keywords, you're gonna want to change them in all three locations. 1:30
    Or, you can mess with the app, and switch them all around. 1:35
    So the horn makes the key sound, and 1:38
    the key makes the nitrous oxide sound or whatever you wanna do. 1:40
    In this course, there's a lot of new things to try out and 1:45
    become familiar with, and there's no other way to do that than to get started. 1:48
    The next video, we'll go over what's happening in the external style sheet, 1:53
    but, you can start editing the HTML page at any time. 1:58
    Have fun with the new features. 2:02
    And when you're ready, test your knowledge in the co-challenge. 2:04
    We'll see you soon. 2:07

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