在客户端如何用JavaScript确定操作系统

落日映苍穹つ 2022-05-13 08:54 196阅读 0赞

**Window.navigator**是只读属性，返回对导航对象的一个引用，可以查询应用运行脚本的相关信息。

从**navigator.appVersion**字符串里面可以找到客户端操作系统的名字。

源代码如下

<!DOCTYPE html>
    <html>
    <head>
    <title>OS Examples</title>
    <script>
    function findOS() {
    var curOS="Not Nmaed...";
    if (navigator.appVersion.indexOf("Win")!=-1) curOS="Windows";
    if (navigator.appVersion.indexOf("Mac")!=-1) curOS="MacOS";
    if (navigator.appVersion.indexOf("X11")!=-1) curOS="UNIX";
    if (navigator.appVersion.indexOf("Linux")!=-1) curOS="Linux";
    alert('Your OS: '+curOS);
    }
    </script>
    </head>
    <body>
    <h2>找到你的操作系统</h2>
    <p>
    <input type="button" value="找到操作系统" onclick="findOS()" />
    </p>
    </body>
    </html>

--------------------

JavaScript 介绍

*  [如何打开浏览器的JavaScript功能支持?][JavaScript]
 *  [Hello, World! 你的第一个JavaScript程序][Hello_ World_ _JavaScript]
 *  [JavaScript应放在HTML文件的啥地方？][JavaScript_HTML]
 *  [如何在JavaScript里面写注释][JavaScript 1]

JavaScript 基础

*  [JavaScript数据类型和变量][JavaScript 2]
 *  [JavaScript 数组][JavaScript 3]
 *  [JavaScript 字符串][JavaScript 4]
 *  [JavaScript If…Else语句][JavaScript If_Else]
 *  [JavaScript 循环Loops][JavaScript _Loops]
 *  [JavaScript 全局变量][JavaScript 5]
 *  [JavaScript 的对象][JavaScript 6]
 *  [JavaScript 函数][JavaScript 7]

JavaScript: 文档对象模型

*  [Javascript DOM 结构][Javascript DOM]
 *  [访问 DOM 元素][DOM]
 *  [如何遍历DOM][DOM 1]
 *  [如何操作Dom][Dom]
 *  [JavaScript DOM 事件][JavaScript DOM]

JavaScript 编程

*  [JavaScript 弹出框][JavaScript 8]
 *  [JavaScript 打开新窗口][JavaScript 9]
 *  [JavaScript如何制作下拉列表][JavaScript 10]

JavaScript 面试问题和答案

*  [JavaScript 是真正的面向对象语言吗?][JavaScript 11]
 *  [JavaScript 优势和劣势][JavaScript 12]
 *  [JavaScript 和 ECMAScript的不同?][JavaScript _ ECMAScript]
 *  [noscript 标签?][noscript]
 *  [JavaScript 转义特殊字符][JavaScript 13]
 *  [JavaScript undefined x 1 是什么意思?][JavaScript undefined x 1]
 *  [JavaScript : 逻辑操作符][JavaScript _]
 *  [比较’=’, ‘==’ and ‘===’ 操作符?][_ and _]
 *  [如何使用 JavaScript重载一个页面?][JavaScript 14]
 *  [如何使用JavaScript动态写html?][JavaScript_html]
 *  [如何使用JavaScript动态添加html元素?][JavaScript_html 1]
 *  [如何从javascript装载另外的html页面?][javascript_html]
 *  [在JavaScript里面使用InnerHTML的缺点是什么?][JavaScript_InnerHTML]
 *  [什么是浏览器对象模型Browser Object Model][Browser Object Model]
 *  [在客户端如何用JavaScript确定操作系统?][JavaScript 15]
 *  [窗口，文档，屏幕在JavaScript里的不同?][JavaScript 16]
 *  [函数 substr() 和substring() 在 JavaScript的区别?][substr_ _substring_ _ JavaScript]
 *  [如何在JavaScript里面替换所有出现的字符串?][JavaScript 17]
 *  [如何检测一个字符串是文字还是对象?][Link 1]
 *  [什么是关联数组? 如何使用?][Link 2]
 *  [JavaScript 什么是匿名anonymous函数?][JavaScript _anonymous]
 *  [‘bind’ 方法在JavaScript里的应用?][bind_ _JavaScript]
 *  [JavaScript纯函数和非纯函数][JavaScript 18]
 *  [JavaScript 是函数式编程语言吗?][JavaScript 19]
 *  [类Class和原型继承Prototypal Inheritance的区别?][Class_Prototypal Inheritance]
 *  [Javascript值的传递和引用?][Javascript]
 *  [Javascript如何避免一个对象被修改?][Javascript 1]
 *  [JavaScript的 ‘this’关键字?][JavaScript_ _this]
 *  [JavaScript的函数提升?][JavaScript 20]
 *  [JavaScript里面NULL的意思?][JavaScript_NULL]
 *  [JavaScript的delete 操作符?][JavaScript_delete]
 *  [JavaScript无限（Infinity）属性的使用?][JavaScript_Infinity]
 *  [JavaScript里面的事件冒泡和事件捕获?][JavaScript 21]
 *  [什么是”strict mode” ，在JavaScript里如何应用?][strict mode_ _JavaScript]
 *  [.call() 和 .apply()的不同?][.call_ _ .apply]
 *  [在一个函数块里面完整的JavaScript源文件的内容?][JavaScript 22]
 *  [什么是立即调用（immediately-invoked）的函数表达式?][immediately-invoked]
 *  [escape 和 unescape 字符串函数在JavaScript的作用?][escape _ unescape _JavaScript]
 *  [操作符instanceof 在JavaScript是什么用途?][instanceof _JavaScript]
 *  [什么是RESTful (REpresentational State Transfer)Web 服务?][RESTful _REpresentational State Transfer_Web]
 *  [什么是弱势（Unobtrusive） JavaScript; 为什么重要?][Unobtrusive_ JavaScript_]
 *  [JavaScript的 Void(0)是什么意思?][JavaScript_ Void_0]
 *  [什么是JavaScript Cookies?][JavaScript Cookies]
 *  [客户端JavaScript和服务端JavaSritp的不同][JavaScript_JavaSritp]

[JavaScript]: http://9801.me/?p=2536
[Hello_ World_ _JavaScript]: http://9801.me/?p=2541
[JavaScript_HTML]: http://9801.me/?p=2550
[JavaScript 1]: http://9801.me/?p=2555
[JavaScript 2]: http://9801.me/?p=2561
[JavaScript 3]: http://9801.me/?p=2566
[JavaScript 4]: http://9801.me/?p=2570
[JavaScript If_Else]: http://9801.me/?p=2574
[JavaScript _Loops]: http://9801.me/?p=2582
[JavaScript 5]: http://9801.me/?p=2591
[JavaScript 6]: http://9801.me/?p=2598
[JavaScript 7]: http://9801.me/?p=2604
[Javascript DOM]: http://9801.me/?p=2612
[DOM]: http://9801.me/?p=2616
[DOM 1]: http://9801.me/?p=2623
[Dom]: http://9801.me/?p=2629
[JavaScript DOM]: http://9801.me/?p=2634
[JavaScript 8]: http://9801.me/?p=2640
[JavaScript 9]: http://9801.me/?p=2644
[JavaScript 10]: http://9801.me/?p=2647
[JavaScript 11]: http://9801.me/?p=2674
[JavaScript 12]: http://9801.me/?p=2680
[JavaScript _ ECMAScript]: http://9801.me/?p=2687
[noscript]: http://9801.me/?p=2702
[JavaScript 13]: http://9801.me/?p=2705
[JavaScript undefined x 1]: http://9801.me/?p=2713
[JavaScript _]: http://9801.me/?p=2717
[_ and _]: http://9801.me/?p=2719
[JavaScript 14]: http://9801.me/?p=2722
[JavaScript_html]: http://9801.me/?p=2724
[JavaScript_html 1]: http://9801.me/?p=2728
[javascript_html]: http://9801.me/?p=2730
[JavaScript_InnerHTML]: http://9801.me/?p=2732
[Browser Object Model]: http://9801.me/?p=2734
[JavaScript 15]: http://9801.me/?p=2737
[JavaScript 16]: http://9801.me/?p=2739
[substr_ _substring_ _ JavaScript]: http://9801.me/?p=2741
[JavaScript 17]: http://9801.me/?p=2743
[Link 1]: http://9801.me/?p=2745
[Link 2]: http://9801.me/?p=2747
[JavaScript _anonymous]: http://9801.me/?p=2750
[bind_ _JavaScript]: http://9801.me/?p=2752
[JavaScript 18]: http://9801.me/?p=2754
[JavaScript 19]: http://9801.me/?p=2756
[Class_Prototypal Inheritance]: http://9801.me/?p=2758
[Javascript]: http://9801.me/?p=2760
[Javascript 1]: http://9801.me/?p=2762
[JavaScript_ _this]: http://9801.me/?p=2764
[JavaScript 20]: http://9801.me/?p=2767
[JavaScript_NULL]: http://9801.me/?p=2661
[JavaScript_delete]: http://9801.me/?p=2665
[JavaScript_Infinity]: http://9801.me/?p=2668
[JavaScript 21]: http://9801.me/?p=2770
[strict mode_ _JavaScript]: http://9801.me/?p=2774
[.call_ _ .apply]: http://9801.me/?p=2778
[JavaScript 22]: http://9801.me/?p=2781
[immediately-invoked]: http://9801.me/?p=2783
[escape _ unescape _JavaScript]: http://9801.me/?p=2785
[instanceof _JavaScript]: http://9801.me/?p=2789
[RESTful _REpresentational State Transfer_Web]: http://9801.me/?p=2791
[Unobtrusive_ JavaScript_]: http://9801.me/?p=2793
[JavaScript_ Void_0]: http://9801.me/?p=2795
[JavaScript Cookies]: http://9801.me/?p=2797
[JavaScript_JavaSritp]: http://9801.me/?p=2799