Open Source DOM Component
Percentage read, reading time & pointsby Read Write Tools
|The rwt-reading-points DOM component provides site visitors with a clue about a document's reading-level, using a descriptive learning level and experience points system.|
When user's browse technical documentation it's not always easy to know if a page is meant for first timers or advanced users. This DOM component provides that information using an ephemeral notification-style text block.
As the user reads, a timer tracks how many seconds is spent reading. As the user scrolls down, the readers progress (as percent read) is tracked. This information is saved to the user's local storage for use with the rwt-reading-summary DOM component.
In the wild
To see an example of this component in use, visit the READ WRITE SERVE website. The component is visible immediately after loading for about five seconds before fading away. To understand what's going on under the hood, use the browser's inspector to view the HTML source code and network activity, and follow along as you read this documentation.
The rwt-reading-points DOM component works in any browser that supports modern W3C standards. Templates are written using BLUEPHRASE notation, which can be compiled into HTML using the free Read Write View desktop app. It has no other prerequisites. Distribution and installation are done with either NPM or via Github.
Download using NPM
OPTION 1: Familiar with Node.js and the
Great. Install the component with this command:
npm install rwt-reading-points
OPTION 2: No prior experience using NPM?
Just follow these general steps:
- Install Node.js/NPM on your development computer.
- Create a
package.jsonfile in the root of your web project using the command:
npm install rwt-reading-points
Important note: This DOM component uses Node.js and NPM and
package.json as a convenient distribution and installation mechanism. The DOM component itself does not need them.
Download using Github
If you prefer using Github directly, simply follow these steps:
- Create a
node_modulesdirectory in the root of your web project.
- Clone the rwt-reading-points DOM component into it using the command:
git clone https://github.com/readwritetools/rwt-reading-points.git
Using the DOM component
After installation, you need to add two things to your HTML page to make use of it.
- Add a
scripttag to load the component's
<script src='/node_modules/rwt-reading-points/rwt-reading-points.js' type=module></script>
- For scripting purposes, apply an
- Provide a value for the number of experience points the visitor will gain by reading the document, using the
- Provide an assessment of the reading difficulty using the
data-timeattribute, using descriptions such as: Simple, Moderate, Difficult, Challenging, etc.
- Provide an estimate of the reading time, in seconds, using the
- Provide a descriptive word to catagorize the document, using the
<rwt-reading-points id=reading-points data-time='190' data-points='4' data-level='Moderate' data-category='Phrasing'></rwt-reading-points>
Initially the component is hidden. It appears soon after the page first loads. It fades away after a few seconds.
The position of the text block is always immediately after the document element with the identifier
objectives. You should style your page to provide a small amount of whitespace in that area using
margin-bottom or something similar. The component itself is designed so that it does not occupy space.
The user's reading time is tracked by movement of the scroll bar placed on the document's outermost frame, which should be identified as
If the page does not have either the
objectives element or the
frame element, the component will be disabled. This is intentional, as it allows a generic template to be used for a website.
data-time attribute is zero or the
data-points attribute is zero, the component will also be disabled.
Dialog size and appearance
The slide-in text panel is sized using four CSS variables, which may be overridden with new values, for example:
The default color palette for the panel can be overridden as well, for example:
The visitor's reading time and experience points are stored in local-storage under the key
The component issues life-cycle events.
- Sent when the component is fully loaded and ready to be used. As a convenience you can use the
waitOnLoading()method which returns a promise that resolves when the
component-loadedevent is received. Call this asynchronously with
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The rwt-newton DOM component is licensed under the MIT License.
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