Zoho creator allows you to write deluge action scripts when ever the value of a field gets modified or is changed in the form. These action events are field specific and these scripts will be invoked only when a particular field value changes. The following field action scripts are supported:
On User Input: On User input is a client side action, which will be invoked whenever the value of a field is modified either by the user or through script. It is used to improve the usability of a form by validating field data even before it is submitted or display other field values based on the value specified in this field. The On user input script is executed before the changed data is persisted in the database. The On User input script will not be called if there is no change in the value of the field (i.e if the new value being set is same as the old value.)
On Update: If you want to perform action whenever the value of a field gets modified, you can write an on update script for that field. It is a server side event, and the field action will be executed only after you have saved the changes to the database (after you click the 'Update' button in the form)
