RadBreadcrumb for ASP.NET AJAX is based on the Kendo UI Breadcrumb Widget. Thus, it exposes the Client-side API and methods offered by the widget and mainly provides a wrapper and API for working with the Breadcrumb on the server.
        You can get Client-side Object Reference to the Breadcrumb control in order to use its API like this: 
        
        
var RadBreadcrumbObject = $find("<%=RadBreadcrumb1.ClientID %>");
        
    
    
        The most commonly used RadBreadcrumb client-side methods are:
    
    
        - 
            get_items—Returns the collection of breadcrumb items.
        
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            get_value—Returns the value of the Breadcrumb.
        
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            set_value—Sets the value of the Breadcrumb.
        
- 
            repaint—Repaints the control.
        
You can find the full client-side API of the control in the RadBreadcrumb Client-side API documentation article.
    
    
        Get Client-side Object Reference to the Kendo Breadcrumb widget in order to use its API
    
    
        There are two ways to get a reference to the Kendo Breadcrumb widget in order to use its API:
        
            - 
                Use the get_kendoWidget method the RadBreadcrumb client-side object exposes. You can get the RadBreadcrumb object through the $find() MS AJAX method:
                
 
 varRadBreadcrumbObject  = $find("<%=RadBreadcrumb1.ClientID %>"); //the standard script control object
 varkendoBreadcrumbObject = RadBreadcrumbObject.get_kendoWidget(); //the Kendo widget
 
 
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                Use the standard Kendo approach for getting the widget through the data-attributes of the DOM element:
                
 
 varkendoBreadcrumbObject = $telerik.$("#<%=RadBreadcrumb1.ClientID %>").data("kendoBreadcrumb"); //the jQuery selector must get the RadBreadcrumb1 select element