Do inline Javascript events decrease web page loading performance?

Question

Does inline Javascript code like this below:

<div onclick='javascript:some_function();'></div>

grow up web page's loading time in any way?

SLaks · Accepted Answer · 2011-07-20 14:04:30Z

2

Yes, it does.

The browser must fire up a separate Javascript parser for each attribute.

It is more efficient to bind the events to functions using attachEvent / addEventHandler, or, more easily, jQuery.

On an unrelated note, you shouldn't use javascript: in an event attribute (aside from the fact that you shouldn't use event attributes at all). It's just an unused label.
In href attributes, the javascript: protocol allows you to create a URI that executes Javascript. However, event attributes take a string of Javascript code, not a URI.

edited Jul 20, 2011 at 14:04

answered Jul 20, 2011 at 13:43

SLaks

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