The component in above link is an AEM core component demonstration page - you may find the actual code on github here: https://github.com/adobe/aem-core-wcm-components You can implement new custom component by extending to this core component and follow delegation pattern.
The component in above link is an AEM core component demonstration page - you may find the actual code on github here: https://github.com/adobe/aem-core-wcm-components You can implement new custom component by extending to this core component and follow delegation pattern.