Skip to content
Chrome Dev Summit Conference Site
JavaScript CSS HTML Go
Branch: master
Clone or download
surma Session content (#266)
Session content
Latest commit e5e9564 Sep 17, 2019

npm i
npm run build # (node 12+ required)

The src folder uses 11ty.


/confbox.config.js allows you to configure the start, end, and timezone of the conference.


All templates have access to the following:

  • conf.utcOffset - The offset of the conference from the UTC timezone in milliseconds.
  • conf.start - Start of the conference as a timestamp.
  • conf.end - End of the conference as a timestamp.


{% className cssPath, class %}

CSS files are processed as CSS Modules. Within a template, reference classnames like this:

{% className cssPath, class %}

…and it will output the transformed class name. Eg:

{% set css = "/_includes/talk/style.css" %}
<h2 class="{% className css, 'talk-header' %}">Building offline-first apps</h2>
<div class="{% className css, 'talk-description' %}">

In the example above, set is used to avoid repeating the path to the CSS.

{% css page, cssURL %}

This will output a <link> pointing to the cssURL unless it's been included already for the current page. This means you can use an include multiple times without loading the CSS multiple times.

  • page - This is the page object available in every template.
  • cssURL - CSS url.


{% set css = "/_includes/talk/style.css" %}
{% css page, css %}


In templates and CSS, references assets via confboxAsset('/path/to/asset.jpg'). This will be replaced with the hashed name of the asset.

<link rel="stylesheet" href="confboxAsset('/_includes/talk/style.css')">
.whatever {
  background: url('confboxAsset(asset.jpg)');

Assets ending .js will be bundled together using Rollup.

{% confDate date, format %}

This will take a date and format it for the timezone of the conference (as set in /confbox.config.js).

  • date - The date to display. This can be a Date object or a timestamp.
  • format - A formatting string as used by date-and-time.
<p>The conference starts {% confDate conf.start, 'MMMM DD' %}</p>

{% isoDate date %}

Returns an ISO 8601 version of a date. This is suitable for <time datetime> and other machine-readable formats like iCal.

  • date - The date to display. This can be a Date object or a timestamp.
You can’t perform that action at this time.