Check documentation for the latest version 6.0 of dhtmlxSuite goToPrevItem DHTMLX Docs

goToPrevItem

selects the item prevous to the active one or the first one, if nothing's selected

void goToPrevItem(boolean callEvent);

Parameters

callEventbooleanset to 'true' to call onBeforeSelect/onSelect events

Example

// init sidebar
var mySidebar = new dhtmlXSideBar({
    parent: "sidebarObj",
    template: "details",
    icons_path: "icons/16x16/",
    width: 160,
    items: [
        {id: "a1", text: "Item 1", icon: "image1.png"},
        {id: "a2", text: "Item 2", icon: "image2.png", selected: true}
    ]
});
 
// select a1
mySidebar.goToNextItem();

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