selectedIndexItem

The property selectedIndexItem is used for a VGUI-field array and refers to the selected index item, which is a VGUI field whose value indicates two aspects of runtime processing:

The field to which the property refers must be of type NUM and must be without decimal places, but may be an array.

Consider the following case:

In this case, the generated Web page contains radio buttons from which the user can choose only one value. The selected index item identifies the radio button by number, with the number 1 referring to the first radio button.

If the selected index item is an array in the same case, the generated Web page contains a set of checkboxes, and the following is true:
The generated HTML is different if the uiType property is output:

Related concepts
Overview of EGL properties

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