browser-detection

I have this code that render's a image acording to the day of the week. But in IE6 and lower and probably some other browsers it won't render png opacity. So I want to change it a litle so that it will detect the browser's that don't render alpha transparency and tell them to load this image instead: "img/horarios2.png". Ive tried making it so that it would rule out IE6 and lower that are known for not rendering, but then I thinking about all the other browsers that I probably don't know about that don't render either and needed something that would rule them out also. I don't know the best

I'd like to know if it's possible to write conditional javascript within a javascript file for Internet Explorer. i.e. something like this... if (is IE7) { do this } else { do this instead }); I know I can load a completely different script for IE using conditional comments in the head, but I only want to change a small piece of code and so loading a completely different sheet would be an 'expensive' way to do that. If you are using jquery you code do this if ($.browser.msie && $.browser.version == '6.0') { //do IE specific code } When writing Javascript, doing feature detection is always the

Yeah, I know that feature detection is preferable. I've got a case in my codebase where we are using $.browser.msie and $.browser.version to decide whether to render some CSS or not. The developer who wrote the code is no longer with us, and I don't fully understand exactly what kind of feature detection I should write here instead. As a quick fix, what's the shortest way to implement $.browser.msie and $.browser.version? I'll just copy the code from jQuery 1.8.3 . // Limit scope pollution from any deprecated API (function() { var matched, browser; // Use of jQuery.browser is frowned upon. //

I have added smooth scrolling to a site of mine using this piece of JavaScript when clicking on hash links. $('a[href*=#]') .click(onAnchorClick); function onAnchorClick(event) { return ! scrollTo(this.hash); } function scrollTo(target) { var e = $(target); var y = e.exists() ? e.offset().top : 0; if(y == 0 && target != '#top') return false; if(Math.max($('html').scrollTop(), $('body').scrollTop()) != y) $('html,body') .animate({scrollTop: y}, 500, function() { location.hash = target; } ); else location.hash = target; return true; } $.fn.exists = function() { return this.length > 0 ? this :

Is there a way to detect if the operating system is OS X Lion or not in Javascript? Cheers! The user agent of Safari (and also Firefox) in Lion is something like Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_1) AppleWebKit/534.48.3 (KHTML, like Gecko) Version/5.1 Safari/534.48.3 There is "Mac OS X 10_7_1" in it - this indicates Lion (= Mac OS 10.7). See here: http://www.whatsmyuseragent.com/ You can read the user agent string using "navigator.userAgent" http://www.quirksmode.org/js/detect.html BrowserDetect.OS I don't know its compatibility though. <- This link does use the useragent. 来源： https: