How to stop event propagation with inline onclick attribute?

Question

Consider the following:

Answer 1

For ASP.NET web pages (not MVC), you can use Sys.UI.DomEvent object as wrapper of native event.

or, pass event as a parameter to inner function:

and in someFunction:

function someFunction(event){
    event.stopPropagation(); // here Sys.UI.DomEvent.stopPropagation() method is used
    // other onclick logic
}