jQuery浏览器检测代码

通过jQuery检测浏览器类型，本代码可以判断浏览器类型，如safari，ie，chrom，firefox，opera，还可以判断是iphone还是ipad还是黑莓等移动设备

function _setBrowser()
{
	var userAgent = navigator.userAgent.toLowerCase();
 
	// Figure out what browser is being used
	jQuery.browser = {
 
		version: (userAgent.match( /.+(?:rv|it|ra|ie|me|ve)[\/: ]([\d.]+)/ ) || [])[1],
 
		chrome: /chrome/.test( userAgent ),
		safari: /webkit/.test( userAgent ) && !/chrome/.test( userAgent ),
		opera: /opera/.test( userAgent ),
		firefox: /firefox/.test( userAgent ),
		msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
 
		mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent ),
 
		webkit: $.browser.webkit,
		gecko: /[^like]{4} gecko/.test( userAgent ),
		presto: /presto/.test( userAgent ),
 
		xoom: /xoom/.test( userAgent ),
 
		android: /android/.test( userAgent ),
		androidVersion: (userAgent.match( /.+(?:android)[\/: ]([\d.]+)/ ) || [0,0])[1],
 
		iphone: /iphone|ipod/.test( userAgent ),
		iphoneVersion: (userAgent.match( /.+(?:iphone\ os)[\/: ]([\d_]+)/ ) || [0,0])[1].toString().split('_').join('.'),
 
		ipad: /ipad/.test( userAgent ),
		ipadVersion: (userAgent.match( /.+(?:cpu\ os)[\/: ]([\d_]+)/ ) || [0,0])[1].toString().split('_').join('.'),
 
		blackberry: /blackberry/.test( userAgent ),
 
		winMobile: /Windows\ Phone/.test( userAgent ),
		winMobileVersion: (userAgent.match( /.+(?:windows\ phone\ os)[\/: ]([\d_]+)/ ) || [0,0])[1]
	};
 
	jQuery.browser.mobile   =   ($.browser.iphone || $.browser.ipad || $.browser.android || $.browser.blackberry );
};