摘要：
大家可以到以下地址下载：http://www.extjs.com/products/extjs/download.php?dl=extjs310&ref=extjsgreenbuttonExt 3.1的主要改进包括：原文：http://www.extjs.com/blog/2009/12/17/ext-js-3-1-massive-memory-improvements-treegrid-and-more%E2%80%A6/Internet Explorer Memory ImprovementsAs single-page, complex, web apps are becomin 阅读全文