addEventListener overwrites other event actions?

Question

Does addEventListener overwrites previously defined actions for a particular event?For example,

<input type="text" name="ele" id="eleID" onfocus="doSomeThing();"/>

Now if I add another action for the same event,will both both function get executed?

eleID.addEventListener('focus',doSomethingElse,false);

If doSomethingElse() overwrites doSomeThing(), is there any other way to do it?

Answer 1

No.

From MDC:

addEventListener is the way to register an event listener as specified in W3C DOM. Its benefits are as follows:

• It allows adding more than a single handler for an event.

See example.