in html in angularjs:

<selectone ng-if="ctrl.rolestatus" config="ctrl.rolestatus"></selectone>

in js:

this.rolestatus = {
            data: this.status,
            read: false,
            default: this.status[0].value,
            change: function selectChange(value) {//
                console.log(value)
                this.selectActive = value.isActive
            }
        }

selectone? why is it equal to object? And what does config in selectone mean?