diff --git a/apps/showcase/doc/common/apidoc/index.json b/apps/showcase/doc/common/apidoc/index.json
index 241069a20..d590e087e 100644
--- a/apps/showcase/doc/common/apidoc/index.json
+++ b/apps/showcase/doc/common/apidoc/index.json
@@ -213,7 +213,7 @@
                             "optional": false,
                             "readonly": false,
                             "type": "boolean",
-                            "default": "",
+                            "default": "false",
                             "description": "Whether the form field has been touched."
                         },
                         {
@@ -221,7 +221,7 @@
                             "optional": false,
                             "readonly": false,
                             "type": "boolean",
-                            "default": "",
+                            "default": "false",
                             "description": "Whether the form field has been modified."
                         },
                         {
@@ -229,7 +229,7 @@
                             "optional": false,
                             "readonly": false,
                             "type": "boolean",
-                            "default": "",
+                            "default": "true",
                             "description": "Whether the form field has not been modified."
                         },
                         {
@@ -237,7 +237,7 @@
                             "optional": false,
                             "readonly": false,
                             "type": "boolean",
-                            "default": "",
+                            "default": "true",
                             "description": "Whether the form field is valid."
                         },
                         {
@@ -245,7 +245,7 @@
                             "optional": false,
                             "readonly": false,
                             "type": "boolean",
-                            "default": "",
+                            "default": "false",
                             "description": "Whether the form field is invalid."
                         },
                         {
@@ -261,7 +261,7 @@
                             "optional": false,
                             "readonly": false,
                             "type": "any[]",
-                            "default": "",
+                            "default": "[]",
                             "description": "All error messages of the form field."
                         }
                     ],
diff --git a/packages/form/src/form/Form.d.ts b/packages/form/src/form/Form.d.ts
index ac613199b..c59de23f9 100644
--- a/packages/form/src/form/Form.d.ts
+++ b/packages/form/src/form/Form.d.ts
@@ -126,22 +126,27 @@ export interface FormFieldState {
     value: any;
     /**
      * Whether the form field has been touched.
+     * @defaultValue false
      */
     touched: boolean;
     /**
      * Whether the form field has been modified.
+     * @defaultValue false
      */
     dirty: boolean;
     /**
      * Whether the form field has not been modified.
+     * @defaultValue true
      */
     pristine: boolean;
     /**
      * Whether the form field is valid.
+     * @defaultValue true
      */
     valid: boolean;
     /**
      * Whether the form field is invalid.
+     * @defaultValue false
      */
     invalid: boolean;
     /**
@@ -150,6 +155,7 @@ export interface FormFieldState {
     error: any;
     /**
      * All error messages of the form field.
+     * @defaultValue []
      */
     errors: any[];
 }