sencha touch 2中判断游览器是否包含webkit的方法
<script type="text/javascript"> if (!Ext.browser.is.WebKit) { alert("The current browser is unsupported.\n\nSupported browsers:\n" + "Google Chrome\n" + "Apple Safari\n" + "Mobile Safari (iOS)\n" + "Android Browser\n" + "BlackBerry Browser" ); } </script>