[add] resetfocus(), update focuschange events for list and dataview

docs/dataview/api/api_overview.md

@@ -15,6 +15,7 @@ description: You can explore the API of DataView in the documentation of the DHT
 | [](dataview/api/dataview_getfocus_method.md)     | @getshort(dataview/api/dataview_getfocus_method.md)     |
 | [](dataview/api/dataview_getfocusitem_method.md) | @getshort(dataview/api/dataview_getfocusitem_method.md) |
 | [](dataview/api/dataview_paint_method.md)        | @getshort(dataview/api/dataview_paint_method.md)        |
+| [](dataview/api/dataview_resetfocus_method.md)   | @getshort(dataview/api/dataview_resetfocus_method.md)   |
 | [](dataview/api/dataview_setfocus_method.md)     | @getshort(dataview/api/dataview_setfocus_method.md)     |
 
 :::info important

docs/dataview/api/dataview_focuschange_event.md

@@ -8,17 +8,22 @@ description: You can explore the focusChange event of DataView in the documentat
 
 @short: fires on moving focus to a new item
 
-@signature: {'focusChange: (focusIndex: number, id: string | number) => void;'}
+@signature: {'focusChange: (focusIndex?: number, id?: string | number) => void;'}
 
 @params:
-- `focusIndex: number` - the position of an item in focus
-- `id: string | number` - the id of the item
+The callback of the **focusChange** event is called with the following parameters:
+
+- `focusIndex` - (optional) the position of an item in focus
+- `id` - (optional) the id of the item
 
 @example:
-dataview.events.on("focusChange", function(index, id){
+dataview.events.on("focusChange", function(focusIndex, id){
     // your code here
 });
 
 @descr:
 
 **Related sample**: [Dataview. Events](https://snippet.dhtmlx.com/2d74uyoh)
+
+@changelog: 
+- Parameters of the callback function became optional in v8.3.14

docs/dataview/api/dataview_resetfocus_method.md

@@ -0,0 +1,20 @@
+---
+sidebar_label: resetFocus()
+title: JavaScript DataView - resetFocus Method 
+description: You can explore the resetFocus method of DataView in the documentation of the DHTMLX JavaScript UI library. Browse developer guides and API reference, try out code examples and live demos, and download a free 30-day evaluation version of DHTMLX Suite.
+---
+
+# resetFocus()
+
+@short: resets focus and moves the scroll to the beginning of the dataview
+
+@signature: {'resetFocus(): void;'}
+
+@example:
+dataview.resetFocus();
+
+@descr:
+
+
+@changelog:
+added in v8.4

docs/list/api/api_overview.md

@@ -15,6 +15,7 @@ description: You can explore the API of List in the documentation of the DHTMLX
 | [](list/api/list_getfocus_method.md)         | @getshort(list/api/list_getfocus_method.md)         |
 | [](list/api/list_getfocusitem_method.md)     | @getshort(list/api/list_getfocusitem_method.md)     |
 | [](list/api/list_paint_method.md)            | @getshort(list/api/list_paint_method.md)            |
+| [](list/api/list_resetfocus_method.md)       | @getshort(list/api/list_resetfocus_method.md)       |
 | [](list/api/list_setfocus_method.md)         | @getshort(list/api/list_setfocus_method.md)         |
 
 :::info important

docs/list/api/list_focuschange_event.md

@@ -8,17 +8,22 @@ description: You can explore the focusChange event of List in the documentation
 
 @short: fires on moving focus to a new item
 
-@signature: {'focusChange: (focusIndex: number, id: string | number) => void;'}
+@signature: {'focusChange: (focusIndex?: number, id?: string | number) => void;'}
 
 @params:
-- `focusIndex: number` - the position of an item
-- `id: string | number` - the id of an item
+The callback of the **focusChange** event is called with the following parameters:
+
+- `focusIndex` - (optional) the position of an item
+- `id` - (optional) the id of an item
 
 @example:
-list.events.on("focusChange", function(index, id){
+list.events.on("focusChange", function(focusIndex, id){
     // your code here
 });
 
 @descr:
 
 **Related sample**: [List. Events](https://snippet.dhtmlx.com/iwt1yd61)
+
+@changelog: 
+- Parameters of the callback function became optional in v8.3.14

docs/list/api/list_resetfocus_method.md

@@ -0,0 +1,20 @@
+---
+sidebar_label: resetFocus()
+title: JavaScript List - resetFocus Method 
+description: You can explore the resetFocus method of List in the documentation of the DHTMLX JavaScript UI library. Browse developer guides and API reference, try out code examples and live demos, and download a free 30-day evaluation version of DHTMLX Suite.
+---
+
+# resetFocus()
+
+@short: resets focus and moves the scroll to the beginning of the list
+
+@signature: {'resetFocus(): void;'}
+
+@example:
+list.resetFocus();
+
+@descr:
+
+
+@changelog:
+added in v8.4

sidebars.js

@@ -591,6 +591,7 @@ module.exports = {
                     "dataview/api/dataview_getfocus_method",
                     "dataview/api/dataview_getfocusitem_method",
                     "dataview/api/dataview_paint_method",
+                    "dataview/api/dataview_resetfocus_method",
                     "dataview/api/dataview_setfocus_method",
                   ],
                 },
@@ -2992,6 +2993,7 @@ module.exports = {
                     "list/api/list_getfocus_method",
                     "list/api/list_getfocusitem_method",
                     "list/api/list_paint_method",
+                    "list/api/list_resetfocus_method",
                     "list/api/list_setfocus_method",
                   ],
                 },