Extjs4中判断浏览器和操作系统
??Ext.onReady(function(){
???if (Ext.isChrome){
????Ext.Msg.alert("浏览器检测","你使用的是Chrome");
???}
???/**
??? *检测IE
??? *
??? */
???if (Ext.isIE){
????Ext.Msg.alert("浏览器检测","你使用的是IE");
???}
???if (Ext.isIE6){
????Ext.Msg.alert("浏览器检测","你使用的是IE");
???}
???if (Ext.isIE7){
????Ext.Msg.alert("浏览器检测","你使用的是IE7");
???}
???if (Ext.isIE8){
????Ext.Msg.alert("浏览器检测","你使用的是IE8");
???}
???/**
??? *像火狐和MOzilla这样的浏览器使用的是Gecko引擎，所以检测他们需要使用Ext.isGecko, Ext.isGecko2, Ext.isGecko3
??? *The browsers such as Mozilla and Firefox that use the Gecko rendering engine are
??? *detected with Ext.isGecko, Ext.isGecko2, and Ext.isGecko3:
??? */
??? if (Ext.isGecko) {
????browser = "Gecko";
??? }
??? if (Ext.isGecko2) {
????browser = "Gecko2";
??? }
??? if (Ext.isGecko3) {
????browser = "We like Firefox!";
??? }
??? /**
???? *检测浏览器是否为Opera
???? *
???? *
???? */???
??? if (Ext.isOpera) {
?????Ext.Msg.alert("浏览器检测","你使用的是Opera");
??? }
??? if (Ext.isSafari) {
????browser = "Safari";
??? }
??? if (Ext.isSafari2) {
????browser = "Safari2";
??? }
??? if (Ext.isSafari3) {
????browser = "Safari3";
??? }
??? if (Ext.isSafari4) {
????browser = "Safari4";
??? }
???
??? //******************************************
??? /**
???? *检测操作系统
???? *
???? */
???? if (Ext.isLinux) {
?????platform = "Linux";
?????Ext.Msg.alert("系统","您使用是Linux系统");
???? }
??? if (Ext.isMac) {
?????platform = "Mac";
?????Ext.Msg.alert("系统","您使用是Mac系统");
??? }
???if (Ext.isWindows) {
?????platform = "Windows ";
?????Ext.Msg.alert("系统","您使用是Window系统");
???}
???/**
??? *Adobe's Air is detected with Ext.isAir:
??? */
???if (Ext.isAir) {
?????platform = "Air";
???}
???/**
??? *Extjs获取的浏览器值和运行平台值都是通过解析JavaScript的navigator对象的userAgent属性来获取的
??? *the values for Ext JS's browser and platform type flags are all obtained
??? *from parsing the value of the userAgent property of the JavaScript navigator object
??? *
??? */
???/*
??? *
??? *ext-all.js代码中有相关源码
??? */
??});
