Getting familiar with the starter code
AMP boilerplate
An AMP page is an HTML page with some restrictions for reliable performance. AMP pages have a bit of special markup that identifies it as an AMP page.
A bare bones AMP page looks like this:
<!DOCTYPE html>
<html amp>
<head>
<meta charset="utf-8" />
<link rel="canonical" href="hello-world.html" />
<meta name="viewport" content="width=device-width" />
<style amp-boilerplate>
body {
-webkit-animation: -amp-start 8s steps(1, end) 0s 1 normal both;
-moz-animation: -amp-start 8s steps(1, end) 0s 1 normal both;
-ms-animation: -amp-start 8s steps(1, end) 0s 1 normal both;
animation: -amp-start 8s steps(1, end) 0s 1 normal both;
}
@-webkit-keyframes -amp-start {
from {
visibility: hidden;
}
to {
visibility: visible;
}
}
@-moz-keyframes -amp-start {
from {
visibility: hidden;
}
to {
visibility: visible;
}
}
@-ms-keyframes -amp-start {
from {
visibility: hidden;
}
to {
visibility: visible;
}
}
@-o-keyframes -amp-start {
from {
visibility: hidden;
}
to {
visibility: visible;
}
}
@keyframes -amp-start {
from {
visibility: hidden;
}
to {
visibility: visible;
}
}
</style>
<noscript
><style amp-boilerplate>
body {
-webkit-animation: none;
-moz-animation: none;
-ms-animation: none;
animation: none;
}
</style></noscript
>
<script async src="https://cdn.ampproject.org/v0.js"></script>
</head>
<body>
Hello World!
</body>
</html>
AMP components
The tutorial's starter code (static/index.html
) builds off the bare bones AMP page with its page content (images, text, etc.) as well as including a few AMP components:
<script
async
custom-element="amp-carousel"
src="https://cdn.ampproject.org/v0/amp-carousel-0.1.js"
></script>
<script
async
custom-template="amp-mustache"
src="https://cdn.ampproject.org/v0/amp-mustache-0.1.js"
></script>
<script
async
custom-element="amp-form"
src="https://cdn.ampproject.org/v0/amp-form-0.1.js"
></script>
<script
async
custom-element="amp-selector"
src="https://cdn.ampproject.org/v0/amp-selector-0.1.js"
></script>
AMP components offer additional functionality and UI components that add rich interactivity to AMP pages. The starter code uses the following AMP components:
amp-carousel
: An image carousel that displays multiple views of the product.amp-mustache
: A templating system for rendering server responses from amp-form.amp-form
: Adds special functionality for<form>
elements that are necessary for AMP pages.amp-selector
: Offers a semantic way to select one or many elements of a group of elements. Can be used as an input source to amp-form.
Basic interactivity
The starter code offers some basic interactivity:
- The image carousel (an
amp-carousel
) displays multiple views of the product. - The product can be added to the user's cart (via
amp-form
) by tapping the "Add to cart" button on the bottom of the page.
Try it out: Swipe the image carousel and tap the "Add to cart" button.