O'Reilly logo

Ext JS 4 First Look by Loiane Groner

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Supporting legacy browsers

This new theme engine is very nice, but there is an issue. Web applications run in a browser. Sometimes we do not know which browser the user is going to use in order to access the application, and we have to make the application work in every browser. Legacy browsers do not support these CSS3 features, and we have to use images to be able to render the corners, background gradients, and so on.

If we open the index.html file, which we are using for testing on the latest versions of Chrome, Firefox, and Internet Explorer, you will not note any issue. The browser will render the Components exactly as presented in the screenshots of this chapter. Now, let's try to open index.html in Explorer 6 or 7 and see what happens: ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required