The impact of removing s.gif in extjs_extjs

When debugging EXTJs examples, everyone often visits http://extjs.com/s.gif. If some friends cannot access foreign websites (such as campus networks, companies restrict access to the Internet), they will wait for a long time. Although It doesn't have any impact, but it's also very unpleasant.
In fact, this one is always easy to solve. Just add the following code before the Ext.onReady() method (or the first sentence of the method) and it will be solved!

Ext.BLANK_IMAGE_URL = "/js/Ext/resources/images/default/s.gif";