amp-live-list component adds support for publishing live updates to AMP pages as new content becomes available in the source document. This works great for implementing live blogs. Find an example of a live blog here.
In other words, the AMP runtime will poll the server for updates to the origin document, fetching itself. The server can return the entire AMP page or parts of it, and the runtime updates the page in-place seamlessly.
amp-live-list component in the header.
<script async custom-element="amp-live-list" src="https://cdn.ampproject.org/v0/amp-live-list-0.1.js"></script>
Update after user interaction: live blog
data-poll-interval attribute to specify how frequently the
amp-live-list component will poll new data. The minimum interval is 15 seconds.
data-max-items-per-page to specify the maximum number displayed on the page.
For an extensive explanation of all the attributes, refer to amp-live-list.
on="tap:my-live-list.update" to load the latest changes from the server.
A button will appear when the AMP runtime discovers new document changes. Note that the button has to be defined as a direct child of
amp-live-list must contain a list of items below
<div items>. Each item has a specific id and the
amp-live-list will look for items with new id.
By clicking on the button "You have updates", new content is displayed on the demo column (the one on the right if the demo is accessed by desktop). The code column (the one in the center if the demo is accessed by desktop) does not update itself, but if you want to see all the items on the page, reload the page.
<amp-live-list layout="container" data-poll-interval="15000" data-max-items-per-page="5" id="amp-live-list-insert-blog"> <button update on="tap:amp-live-list-insert-blog.update">You have updates</button> <div items> [% for item in blogItems %] <div id="[[ item.id ]]" data-sort-time="[[ item.timestamp ]]" class="blog-item"> <amp-img src="[[ item.img ]]" layout="responsive" width="1280" height="853"> </amp-img> <div>[[ item.text ]]</div> </div> [% endfor %] </div> </amp-live-list>
the contents of the
amp-live-list are generated randomly (for easier and repeatable testing).
If you want to update existing list items without user interaction, you need to specify via the
data-update-time attribute when the update has been performed.
The following example will display and automatically update the current time. This approach is great for displaying live scores or live market values.
<amp-live-list layout="container" data-poll-interval="15000" data-max-items-per-page="1" id="amp-live-list-update"> <button update on="tap:amp-live-list-insert-blog.update">You have updates</button> <div items> <div id="time" data-sort-time="1234567" data-update-time="[[ timestamp ]]" class="time"> The time is: <time>[[ time ]]</time> </div> </div> </amp-live-list>
If the explanations on this page don't cover all of your questions feel free to reach out to other AMP users to discuss your exact use case.Go to Stack OverflowAn unexplained feature?
The AMP project strongly encourages your participation and contributions! We hope you'll become an ongoing participant in our open source community but we also welcome one-off contributions for the issues you're particularly passionate about.Edit sample on GitHub