React Menu - showFirstSubmenuMode
Specifies options for showing and hiding the first level submenu.
If you assign a string that specifies the mode name to this option, the widget will use the default delay value.
showFirstSubmenuMode: "onHover"
Use the ShowSubmenuMode enum to specify this option when the widget is used as an ASP.NET MVC 5 Control or a DevExtreme-Based ASP.NET Core Control. This enum accepts the following values: OnHover and OnClick.
delay
Specifies the delay in submenu showing and hiding.
Passing a number to this option is the same as passing an object whose show and hide fields hold equal values. For example, the following ways to specify the delay are identical.
//number
delay: 300
//object
delay: {
    show: 300,
    hide: 300
}name
Specifies the mode name.
Use the ShowSubmenuMode enum to specify this option when the widget is used as an ASP.NET MVC 5 Control or a DevExtreme-Based ASP.NET Core Control. This enum accepts the following values: OnHover and OnClick.
If you have technical questions, please create a support ticket in the DevExpress Support Center.