Question

function addValidEvent(item,event,func)
{
    if (item.addEventListener) 
    {
        item.addEventListener(event, func, false);        
    }
    else 
    if (item.attachEvent) 
    {
        item.attachEvent("on" + event, func);
    } else {
       //todo
    }
}

I call it like

addValidEvent(element, "mouseover", inRadio(element));

inRadio this is other function, I need to register this with out call a inRadio in addValidEvent call.

How to correct pass the function like param ?

Answer 1

The context on which your function is called is the element itself, so you could pass the function reference(name) as the event handler:

addValidEvent(element, "mouseover", inRadio);

or you can wrap your function call in an anonymous function(this might come in handy when you want to have more control over the callback) :

addValidEvent(element, "mouseover", function(){inRadio(element);});