how to set a disable field edit mode, without plugin?

AI generated answer (using internal Slack threads):

To disable a field edit mode without using a plugin, you can use SuiteScript 2.0's User Event script. This can be done in the beforeLoad trigger using the context.form object to find a field by its id and then set the fieldObject.disabled to true. Here is a sample code snippet:

javascript
context.form.getField({ id : 'field_id' }).updateDisplayType({ displayType : serverWidget.FieldDisplayType.DISABLED });

In the above code, replace 'field_id' with the id of the field you want to disable. This will set the display type of the field to DISABLED, effectively making it uneditable. Alternatively, you can also use the following code:

javascript
var ABC_field = context.form.getField({id: lib.ROSTER_FLD.BBB_CHCKBOX});
ABC_field.updateDisplayType({displayType: 'disabled'});

In this code, replace 'lib.ROSTER_FLD.BBB_CHCKBOX' with the id of the field you want to disable. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******