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  • javascript dectect browser 检测浏览器js

    	//  CLIENT_SIDE SNIFFER CODE
    // convert all characters to lowercase
    var agt=navigator.userAgent.toLowerCase();

    // *** BROWSER VERSION ***
    // Note: On IE5, these return 4, so use is_ie5up to detect IE5.
    var is_major = parseInt(navigator.appVersion);
    var is_minor = parseFloat(navigator.appVersion);

    // *** BROWSER TYPE ***
    var is_nav = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
    && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
    && (agt.indexOf('webtv')==-1));
    var is_nav4 = (is_nav && (is_major == 4));
    var is_nav5 = (is_nav && (is_major == 5));
    var is_nav5up = (is_nav && (is_major >= 5));
    var is_nav6 = (is_nav && (is_major == 6));
    var is_nav4up = (is_nav && (is_major >= 4));
    var is_nav6up = (is_nav && (is_major >= 6));
    var is_ie = (agt.indexOf("msie") != -1);
    var is_ie3 = (is_ie && (is_major < 4));
    var is_ie5 = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
    var is_ie5up = (is_ie && !is_ie3 && !is_ie4);
    var is_ie6 = (is_ie && (is_major == 4) && (agt.indexOf("msie 6.")!=-1) );
    var is_ie7 = (is_ie && (is_major == 4) && (agt.indexOf("msie 7.")!=-1) );
    var is_ie4 = (is_ie && (is_major <= 4) && !is_ie5 && !is_ie6 && !is_ie7);
    var is_opera = (agt.indexOf("opera") != -1);

    // *** PLATFORM ***
    var is_win = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
    var is_mac = (agt.indexOf("mac")!=-1);
    var is_sun = (agt.indexOf("sunos")!=-1);
    var is_irix = (agt.indexOf("irix") !=-1); // SGI
    var is_hpux = (agt.indexOf("hp-ux")!=-1);
    var is_aix = (agt.indexOf("aix") !=-1); // IBM
    var is_linux = (agt.indexOf("inux")!=-1);
    var is_sco = (agt.indexOf("sco")!=-1) || (agt.indexOf("unix_sv")!=-1);
    var is_unixware = (agt.indexOf("unix_system_v")!=-1);
    var is_mpras = (agt.indexOf("ncr")!=-1);
    var is_reliant = (agt.indexOf("reliantunix")!=-1);
    var is_dec = ((agt.indexOf("dec")!=-1) || (agt.indexOf("osf1")!=-1) ||
    (agt.indexOf("dec_alpha")!=-1) || (agt.indexOf("alphaserver")!=-1) ||
    (agt.indexOf("ultrix")!=-1) || (agt.indexOf("alphastation")!=-1));
    var is_sinix = (agt.indexOf("sinix")!=-1);
    var is_freebsd = (agt.indexOf("freebsd")!=-1);
    var is_bsd = (agt.indexOf("bsd")!=-1);
    var is_unix = ((agt.indexOf("x11")!=-1) || is_irix || is_sco ||
    is_unixware || is_mpras || is_reliant ||
    is_dec || is_sinix || is_aix || is_bsd || is_freebsd);
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  • 原文地址:https://www.cnblogs.com/jinweijie/p/1014239.html
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