how to get field value on change for FormItem in antd
When working with form components in Ant Design (antd), such as and , it is often necessary to retrieve field values upon changes to a FormItem for performing operations or validations. Ant Design provides several approaches to achieve this, including:1. Using and CallbacksAnt Design's component offers two callback functions, and , for capturing changes to field values.onValuesChangeThis callback is invoked when form field values change, passing all current form values as parameters.In the above example, the function is triggered whenever any form field value changes, logging both the changed field values and all current field values.onFieldsChangeThis callback provides more detailed information, including the field's state and name.In this example, whenever any property of a form field changes (such as its value, touched status, or validation status), the function is called.2. Using 'sIf you only need to handle changes for a specific form item, you can use the property of to customize the processing of the form control's value.In the above code, we process the input value using , for example, trimming whitespace from the string. This way, whenever the form item's value changes, we can obtain the processed value.By using these methods, you can flexibly retrieve and handle changes to field values in Ant Design forms, which is useful for creating dynamic and responsive user interfaces.
