zoukankan      html  css  js  c++  java
  • JavaScript获取浏览器类型与版本

    从网上找到一段使用JavaScript判断浏览器以及浏览器版本的比较好的代码,在此记录一下:

    <script type="text/javascript">
            var Sys = {};
            var ua = navigator.userAgent.toLowerCase();
            var s;
            (s = ua.match(/msie ([d.]+)/)) ? Sys.ie = s[1] :
            (s = ua.match(/firefox/([d.]+)/)) ? Sys.firefox = s[1] :
            (s = ua.match(/chrome/([d.]+)/)) ? Sys.chrome = s[1] :
            (s = ua.match(/opera.([d.]+)/)) ? Sys.opera = s[1] :
            (s = ua.match(/version/([d.]+).*safari/)) ? Sys.safari = s[1] : 0;
    
            //以下进行测试
            if (Sys.ie) document.write('IE: ' + Sys.ie);
            if (Sys.firefox) document.write('Firefox: ' + Sys.firefox);
            if (Sys.chrome) document.write('Chrome: ' + Sys.chrome);
            if (Sys.opera) document.write('Opera: ' + Sys.opera);
            if (Sys.safari) document.write('Safari: ' + Sys.safari);
    </script>
    

      将上述代码封装成一个方法,方法返回Sys对象,Sys对象中封装了浏览器的类型和版本信息,如下:

     function getBrowserInfo(){
    2     var Sys = {};
    3     var ua = navigator.userAgent.toLowerCase();
    4     var re =/(msie|firefox|chrome|opera|version).*?([d.]+)/;
    5     var m = ua.match(re);
    6     Sys.browser = m[1].replace(/version/, "'safari");
    7     Sys.ver = m[2];
    8     return Sys;
    9 }
    

    完整测试代码如下:

    <!DOCTYPE HTML>
    <html>
    <head>
    <title>JavaScript获取浏览器类型与版本</title>
    <script type="text/javascript">
    var Sys = {};
    var ua = navigator.userAgent.toLowerCase();
    var s;
    (s = ua.match(/msie ([d.]+)/)) ? Sys.ie = s[1] :
    (s = ua.match(/firefox/([d.]+)/)) ? Sys.firefox = s[1] :
    (s = ua.match(/chrome/([d.]+)/)) ? Sys.chrome = s[1] :
    (s = ua.match(/opera.([d.]+)/)) ? Sys.opera = s[1] :
    (s = ua.match(/version/([d.]+).*safari/)) ? Sys.safari = s[1] : 0;

    //以下进行测试
    if (Sys.ie) document.write('IE: ' + Sys.ie);
    if (Sys.firefox) document.write('Firefox: ' + Sys.firefox);
    if (Sys.chrome) document.write('Chrome: ' + Sys.chrome);
    if (Sys.opera) document.write('Opera: ' + Sys.opera);
    if (Sys.safari) document.write('Safari: ' + Sys.safari);
    </script>
    <script type="text/javascript">
    function getBrowserInfo(){
    var Sys = {};
    var ua = navigator.userAgent.toLowerCase();
    var re =/(msie|firefox|chrome|opera|version).*?([d.]+)/;
    var m = ua.match(re);
    Sys.browser = m[1].replace(/version/, "'safari");
    Sys.ver = m[2];
    return Sys;
    }
    document.write('<hr/>');
    //获取当前的浏览器信息
    var sys = getBrowserInfo();
    //sys.browser得到浏览器的类型,sys.ver得到浏览器的版本
    document.write(sys.browser + "的版本是:" + sys.ver);
    </script>
    </head>

    <body>

    </body>
    </html>

      

  • 相关阅读:
    Trapping Rain Water
    Construct Binary Tree from Preorder and Inorder Traversal
    Flatten Binary Tree to Linked List
    Permutations II
    Unique Paths II
    Path Sum II
    Unique Binary Search Trees II
    evdev module-----uinput.py
    evdev module-----events.py
    evdev module-----device.py
  • 原文地址:https://www.cnblogs.com/master-zxc/p/5733665.html
Copyright © 2011-2022 走看看