I have a large extjs app that in hope to launch this summer. I've been working on it for over two years!!
It's built on extjs 3.0 and I am considering if I will be able to move to 4.0 before the release.if any one has any insights please let me know:
- How backwards compatible is 4.0?
- Will live grid work with 4.0?
- Is there a significant memory usage and performance benefit in upgrading to 4.0? As it is now memory usage and performance (especially in IE) are Two of my biggest concerns
- I'm usinge high charts and the high charts adapter for charting. Looks like I could replace this with the new charts in 4.0. That would be good as the high charts library is pretty big and anywhere I can save a few kb would be welcome.