# Add Custom Javascript for Content Blocks - Configure Collapsible's

**URL:** <https://community.bloomreach.com/t/add-custom-javascript-for-content-blocks-configure-collapsibles/2167>\
**Category:** Experience Manager (PaaS/OnPrem)\
**Created:** [October 8, 2020, 7:36am UTC](https://community.bloomreach.com/t/add-custom-javascript-for-content-blocks-configure-collapsibles/2167 "2020-10-08T07:36:01Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![nrehbein](https://avatars.discourse-cdn.com/v4/letter/n/ed8c4c/32.png) [@nrehbein](https://community.bloomreach.com/u/nrehbein)\
**Post date:** [October 8, 2020, 7:36am UTC](https://community.bloomreach.com/t/add-custom-javascript-for-content-blocks-configure-collapsibles/2167/1 "2020-10-08T07:36:01Z")

</div>

Hi,  
My goal is to show the collapsible content blocks in the cms editor in the “collapsed” state as default.  
Does a property exist, with which I can configure this?

If not, how can I add custom JavaScript to the cms editor?

Dear regards  
Norman