解决jquery1.9不支持browser对象的问题||TypeError: $.browser is undefined

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(function(jQuery){

if(jQuery.browser) return;

jQuery.browser = {};

jQuery.browser.mozilla = false;

jQuery.browser.webkit = false;

jQuery.browser.opera = false;

jQuery.browser.msie = false;

var
nAgt = navigator.userAgent;

jQuery.browser.name = navigator.appName;

jQuery.browser.fullVersion = ‘‘+parseFloat(navigator.appVersion);

jQuery.browser.majorVersion = parseInt(navigator.appVersion,10);

var
nameOffset,verOffset,ix;

// In Opera, the true version is after "Opera" or after "Version"

if ((verOffset=nAgt.indexOf("Opera"))!=-1) {

jQuery.browser.opera = true;

jQuery.browser.name = "Opera";

jQuery.browser.fullVersion = nAgt.substring(verOffset+6);

if ((verOffset=nAgt.indexOf("Version"))!=-1)

jQuery.browser.fullVersion = nAgt.substring(verOffset+8);

}

// In MSIE, the true version is after "MSIE" in userAgent

else
if ((verOffset=nAgt.indexOf("MSIE"))!=-1) {

jQuery.browser.msie = true;

jQuery.browser.name = "Microsoft Internet Explorer";

jQuery.browser.fullVersion = nAgt.substring(verOffset+5);

}

// In Chrome, the true version is after "Chrome"

else
if ((verOffset=nAgt.indexOf("Chrome"))!=-1) {

jQuery.browser.webkit = true;

jQuery.browser.name = "Chrome";

jQuery.browser.fullVersion = nAgt.substring(verOffset+7);

}

// In Safari, the true version is after "Safari" or after "Version"

else
if ((verOffset=nAgt.indexOf("Safari"))!=-1) {

jQuery.browser.webkit = true;

jQuery.browser.name = "Safari";

jQuery.browser.fullVersion = nAgt.substring(verOffset+7);

if ((verOffset=nAgt.indexOf("Version"))!=-1)

jQuery.browser.fullVersion = nAgt.substring(verOffset+8);

}

// In Firefox, the true version is after "Firefox"

else
if ((verOffset=nAgt.indexOf("Firefox"))!=-1) {

jQuery.browser.mozilla = true;

jQuery.browser.name = "Firefox";

jQuery.browser.fullVersion = nAgt.substring(verOffset+8);

}

// In most other browsers, "name/version" is at the end of userAgent

else
if ( (nameOffset=nAgt.lastIndexOf(‘ ‘)+1) <

(verOffset=nAgt.lastIndexOf(‘/‘)) )

{

jQuery.browser.name = nAgt.substring(nameOffset,verOffset);

jQuery.browser.fullVersion = nAgt.substring(verOffset+1);

if (jQuery.browser.name.toLowerCase()==jQuery.browser.name.toUpperCase()) {

jQuery.browser.name = navigator.appName;

}

}

// trim the fullVersion string at semicolon/space if present

if ((ix=jQuery.browser.fullVersion.indexOf(";"))!=-1)

jQuery.browser.fullVersion=jQuery.browser.fullVersion.substring(0,ix);

if ((ix=jQuery.browser.fullVersion.indexOf(" "))!=-1)

jQuery.browser.fullVersion=jQuery.browser.fullVersion.substring(0,ix);

jQuery.browser.majorVersion = parseInt(‘‘+jQuery.browser.fullVersion,10);

if (isNaN(jQuery.browser.majorVersion)) {

jQuery.browser.fullVersion = ‘‘+parseFloat(navigator.appVersion);

jQuery.browser.majorVersion = parseInt(navigator.appVersion,10);

}

jQuery.browser.version = jQuery.browser.majorVersion;

})(jQuery);