https://www.marblecityca.com/2.23.3/script/browser.js

1// For compatibility with $.browser.
2(function() {
3	var matched, browser;
4	
5	// Use of jQuery.browser is frowned upon.
6	// More details: http://api.jquery.com/jQuery.browser
7	// jQuery.uaMatch maintained for back-compat
8	jQuery.uaMatch = function( ua ) {
9		ua = ua.toLowerCase();
10		
11		var match = /(chrome)[ \/]([\w.]+)/.exec( ua ) ||
12			/(webkit)[ \/]([\w.]+)/.exec( ua ) ||
13			/(opera)(?:.*version|)[ \/]([\w.]+)/.exec( ua ) ||
14			/(msie) ([\w.]+)/.exec( ua ) ||
15			ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec( ua ) ||
16			[];
17		
18		return {
19			browser: match[ 1 ] || "",
20			version: match[ 2 ] || "0"
21		};
22	};
23	
24	matched = jQuery.uaMatch( navigator.userAgent );
25	browser = {};
26	
27	if ( matched.browser ) {
28		browser[ matched.browser ] = true;
29		browser.version = matched.version;
30	}
31	
32	// Chrome is Webkit, but Webkit is also Safari.
33	if ( browser.chrome ) {
34		browser.webkit = true;
35	} else if ( browser.webkit ) {
36		browser.safari = true;
37	}
38	
39	jQuery.browser = browser;
40})();