实例详解jQuery 1.9版本以上的浏览器判断方法

 var matched, browser;
jQuery.uaMatch = function( ua ) {
  ua = ua.toLowerCase();
  var match = /(chrome)[ \/]([\w.]+)/.exec( ua ) ||
    /(webkit)[ \/]([\w.]+)/.exec( ua ) ||
    /(opera)(?:.*version|)[ \/]([\w.]+)/.exec( ua ) ||
    /(msie) ([\w.]+)/.exec( ua ) ||
    ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec( ua ) ||
    [];
  return {
    browser: match[ 1 ] || "",
    version: match[ 2 ] || "0"
  };
};
matched = jQuery.uaMatch( navigator.userAgent );
browser = {};
if ( matched.browser ) {
  browser[ matched.browser ] = true;
  browser.version = matched.version;
}
// Chrome is Webkit, but Webkit is also Safari.
if ( browser.chrome ) {
  browser.webkit = true;
} else if ( browser.webkit ) {
  browser.safari = true;
}
jQuery.browser = browser;
//下面是直接写的判断，上面jq的获取方法
if (matched.browser == 'mozilla') {
  $('#Online-message .liuyan').css({'padding-left': '0px','padding-right': '0px'})
}