How to pass an event object to a function in Javascript?

HTML:

<input type="button" value="click me" onclick="ButtonClick(event);" /> 

Javascript:

function ButtonClick(e, button) {
    alert(e.type);
    alert("Button Click...!");
}

Pass "event" keyword in onclick function and also you pass extra argument after that like


HTML:

<input type="button" value="click me" onclick="ButtonClick(event, this);" /> 

Javascript:

function ButtonClick(e, button) {
    alert(e.type);
    alert("Button Click...!");
}

Demo:
http://jsfiddle.net/patelriki13/2zuef/