--- title: "Show and hiding fields" slug: "show-and-hiding-fields" updated: 2026-06-18T01:42:35Z published: 2026-06-18T01:42:35Z canonical: "help.infoodle.com/show-and-hiding-fields" --- > ## Documentation Index > Fetch the complete documentation index at: https://help.infoodle.com/llms.txt > Use this file to discover all available pages before exploring further. # Show and hiding fields By default there is no interaction between one form field and another. However, with the addition of Javascript, you can use the selection of a lookup list option, or the setting of a check box, to display or hide fields. An example of this can be seen here: [Selection changes options form](https://demo.infoodle.com/form_process?g=b25c54bb-9d1a-4e6f-bd55-59c617cbeec9) - where the recurring period selection is used to show the associated payment amount field (as buttons), and hide the other options. - note that each amount field has its own settings - amount per button, account code, campaign, etc. **Form settings** Based on the example above, here are the fields that make up the form: ![Image](https://cdn.document360.io/d198920d-a212-4177-85f9-e1abc92e7ab3/Images/Documentation/image-HCHJ5MG5.png) Associated with each Amount field is a unique CCS class (select **Show design options** to see this field): - 'donation-1' ![Image](https://cdn.document360.io/d198920d-a212-4177-85f9-e1abc92e7ab3/Images/Documentation/image-TPKVCYE9.png) For each Amount field associate an appropriate CSS class - donation-2, donation-3, donation-4, etc. In addition to this there needs to be another CSS class added to the field that's being used to change the display of Amount fields. In the case of the example form above, the Recurring Period is being used and the following was added: ![Image](https://cdn.document360.io/d198920d-a212-4177-85f9-e1abc92e7ab3/Images/Documentation/image-93CGG0TW.png) With these in place add the following to the Form Settings - Appearance - Additional CSS code field: ```