Added function documentation

src/editor/js/components/spaceselect.tsx

@@ -24,12 +24,20 @@ export class SpaceSelect extends React.Component<propTypes, stateTypes> {
         listAllSpaces().then(this.updateSpaceList);
     }
 
+    /**
+     * Render list of spaces as available options.
+     * @param spaceList Array containing all available space names.
+     */
     updateSpaceList(spaceList: string[]) {
         this.setState({
             spaces: spaceList,
         });
     }
 
+    /**
+     * Triggered when another option (space) is selected. Calls given function to load specified space.
+     * @param e Select-event that references the select element and allows to access the new value (space).
+     */
     handleSelectChange(e: ChangeEvent<HTMLSelectElement>) {
         const success = this.props.onLoadSpace(e.target.value);