How it works
The script looks for an
[expand] tag on a single line and then looks for the
[/expand] tag (again on a single line, thus being the only content of its paragraph). When it finds these it will add some classes and hide everything in between. It will show a ‘read more →’ link, indicating the text can be expanded.
Step 1. Download the file
Step 2. Save the file in the ‘static/js’ directory of your project
Step 3. Make sure the bottom of your layout document looks like this: