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POShow DIV based on Browser & Add Class based on Version of Browser
 

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  1. POShow DIV based on Browser & Add Class based on Version of Browser
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    <p>I am building a page that will allow a simple user to check their browser version and then depending on what browsers <em>and</em> operating system will show a certain div. Then based on version add a certain class to a tag. </p> <p>I <a href="http://www.quirksmode.org/js/detect.html" rel="nofollow">found this code</a> to detect the browser, version, and operating system. Code Follows:</p> <pre><code>// Detect Browser and OS var BrowserDetect = { init: function () { this.browser = this.searchString(this.dataBrowser) || "An unknown browser"; this.version = this.searchVersion(navigator.userAgent) || this.searchVersion(navigator.appVersion) || "an unknown version"; this.OS = this.searchString(this.dataOS) || "an unknown OS"; }, searchString: function (data) { for (var i=0;i&lt;data.length;i++) { var dataString = data[i].string; var dataProp = data[i].prop; this.versionSearchString = data[i].versionSearch || data[i].identity; if (dataString) { if (dataString.indexOf(data[i].subString) != -1) return data[i].identity; } else if (dataProp) return data[i].identity; } }, searchVersion: function (dataString) { var index = dataString.indexOf(this.versionSearchString); if (index == -1) return; return parseFloat(dataString.substring(index+this.versionSearchString.length+1)); }, dataBrowser: [ { string: navigator.userAgent, subString: "Chrome", identity: "Chrome" }, { string: navigator.userAgent, subString: "OmniWeb", versionSearch: "OmniWeb/", identity: "OmniWeb" }, { string: navigator.vendor, subString: "Apple", identity: "Safari", versionSearch: "Version" }, { prop: window.opera, identity: "Opera", versionSearch: "Version" }, { string: navigator.vendor, subString: "iCab", identity: "iCab" }, { string: navigator.vendor, subString: "KDE", identity: "Konqueror" }, { string: navigator.userAgent, subString: "Firefox", identity: "Firefox" }, { string: navigator.vendor, subString: "Camino", identity: "Camino" }, { // for newer Netscapes (6+) string: navigator.userAgent, subString: "Netscape", identity: "Netscape" }, { string: navigator.userAgent, subString: "MSIE", identity: "Explorer", versionSearch: "MSIE" }, { string: navigator.userAgent, subString: "Gecko", identity: "Mozilla", versionSearch: "rv" }, { // for older Netscapes (4-) string: navigator.userAgent, subString: "Mozilla", identity: "Netscape", versionSearch: "Mozilla" } ], dataOS : [ { string: navigator.platform, subString: "Win", identity: "Windows" }, { string: navigator.platform, subString: "Mac", identity: "Mac" }, { string: navigator.userAgent, subString: "iPhone", identity: "iPhone/iPod/iPad" }, { string: navigator.platform, subString: "Linux", identity: "Linux" } ] }; BrowserDetect.init(); </code></pre> <p>I do not know where to start with the javascript to show certain divs.</p> <p>My idea is that based on what the above code shows it will either show a red or green button based on the version number and a DIV. For example if the browser is Internet Explorer and the Version is 8 then it will show a red button and a div with certain options.</p> <p>Idea for code:</p> <pre><code>&lt;div style="width:400px;" class="center"&gt; &lt;script type="text/javascript"&gt; document.write('&lt;p class="[insert either red or green based on version number]-button"&gt;You\'re using ' + BrowserDetect.browser + ' ' + BrowserDetect.version + ' on ' + BrowserDetect.OS + '&lt;/p&gt;'); &lt;/script&gt; &lt;/div&gt; &lt;!-- Show either Outdated DIV or Up to Date Div based on version number I specify. --&gt; &lt;div id="outdated"&gt; &lt;!-- Content --&gt; &lt;/div&gt; &lt;div id="up-to-date"&gt; &lt;!-- Content --&gt; &lt;/div&gt; &lt;!-- Show if Windows --&gt; &lt;div id="windows"&gt; &lt;!-- Content --&gt; &lt;/div&gt; &lt;!-- Show if MAC --&gt; &lt;div id="mac"&gt; &lt;!-- Content --&gt; &lt;/div&gt; &lt;!-- Show if Linux --&gt; &lt;div id="linux"&gt; &lt;!-- Content --&gt; &lt;/div&gt; &lt;!-- Show if Unknown or Other --&gt; &lt;div id="other"&gt; &lt;!-- Content --&gt; &lt;/div&gt; </code></pre> <p><em><strong>Example</em></strong></p> <p>Let us say an user visit the page and is running Firefox 10 on Windows. The following code would show: </p> <pre><code>&lt;div style="width:400px;" class="center"&gt; &lt;script type="text/javascript"&gt; document.write('&lt;p class="red-button"&gt;You\'re using ' + BrowserDetect.browser + ' ' + BrowserDetect.version + ' on ' + BrowserDetect.OS + '&lt;/p&gt;'); &lt;/script&gt; &lt;/div&gt; &lt;div id="outdated"&gt; &lt;p&gt;You are using an outdated browser.&lt;/p&gt; &lt;/div&gt; &lt;div id="windows"&gt; &lt;!-- Links to update browser. --&gt; &lt;/div&gt; </code></pre> <p>I hope this is clear and I will answer any and all questions. I have not attempted any code so far as I do not know where to start beyond detecting the bowser, version, and OS. </p> <p>I <em>cannot</em> use any server side scripting. I am using a hosted CMS and do not have server side access. I am using jQuery 1.8 on my page however I do not want to use <code>$.browser</code> since it is deprecated. (With that said if it is much easier or the only was to do this in just JS then I am willing to use it and will maintain an older version of jQuery for this page.) Also I assume that I will have to manually specify what versions are outdated and not. (I.E. If version is less than 14 the browser is outdated.) If there is a way to tell the script what is the most updated version released then great but not required. </p> <p><strong>An Important Note:</strong> I am a novice at JS and open to any and all code that will work for my purposes which are creating a simple and easy to use page for a user of my service/site to check their browser and browser version. While normally I would agree that user agent sniffing should be avoided in this case I do not see a way around it to do what I would like. Since I am a novice please provide examples.</p>
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    1. COMost purists will tell you that user agent sniffing won't net you any benefits. If your page is not expected to work "identically" on older browsers, the general advice is to ensure that it works "adequately" (ie. the user can at least still get the information). Unless your project is specifically meant to provide information based on the browsers themselves, I would generally recommend avoiding UA sniffing.
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      1. USGreg Pettit
    2. CO@Greg Pettit Adding to what he said, that code above seems outdated and doesn't account for several scenarios. While not a huge problem, I could imagine negative user-experiences if you design something fundamental around this code.
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      1. USOhgodwhy
    3. COAnd for most cases I would agree. But I am attempting to build a page that a user can check their browser and the browser version number. I have no way of doing this but with JS and UA sniffing. I am attempting to make this as simple as possible as some of my users are very computer illiterate.
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