The viewerToolTipOpening(e, args) Event of the HTML5 Report Viewer

The event occurs before a tooltip is opened, providing the ability to cancel its opening.

Parameters:

Parameter	Description
e	This is the jQuery.Event object and e.data is respectively jQuery's event.data. e.data.sender is the report viewer that raised the event.
args	An object with the following properties: element - the DOM element that caused the tooltip opening. toolTip - the current toolTip instance. Consists of title and text fields. cancel - a flag that determines if the further processing of the action should be canceled or not.

// $(handler) is jQuery's shorthand for $(document).ready(handler)
$(function () {
    $("#reportViewer1").telerik_ReportViewer({
        serviceUrl: "api/reports/",
        reportSource: {
            report: "Telerik.Reporting.Examples.CSharp.ProductSales, CSharp.ReportLibrary"
        },
        viewerToolTipOpening: function(e, args)
        {
            //disable a tooltip that contains '2004' in its title
            args.cancel = (/2004/i.test(args.toolTip.title));
        }
    });
});