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    <blockquote> <p>It is best to keep separate files or include all files in one file Javascript?</p> </blockquote> <p>To avoid multiple server requests, it is better to group all your JavaScript files into only one. Also, you can use <a href="http://bundlejs.com/" rel="noreferrer">bundlejs</a> too (it is on beta and it is free by now).</p> <p>If you're using C#.Net + ASP.Net, you can <a href="http://www.asp.net/mvc/tutorials/mvc-4/bundling-and-minification" rel="noreferrer">bundle your files</a> — it is a very good way to compress your scripts.</p> <blockquote> <p>how can I avoid conflicts between different scripts?</p> </blockquote> <p>You can use <a href="http://requirejs.org/" rel="noreferrer">RequireJS</a>; different names it is a good idea too; and every time that a plug-in/script ends, use <code>;</code> to determine its end.</p> <h2>Performatic consideration</h2> <p>To maintain the productivity of your scripts, you should <em><a href="http://jscompress.com/" rel="noreferrer">minify</a></em> them.</p> <h2>Solution for a single page application</h2> <p>After you have <em>minified</em> your scripts, then group them all — regardless if they are plugins or your own code — into a single file and call it in your application.</p> <h2>Solution for a multiple page application</h2> <p>In this case, you should call just the necessary JavaScript for each page. <strong>How can you do this?</strong></p> <p>After you minified all of your scripts, then separate them in <em>categories</em>. Take a look to get the idea:</p> <p><code>/assets/js/core.js</code> — here you put <em>your</em> JavaScript code that is necessary to all of your pages. It is your core; your kernel;</p> <p><code>/assets/js/plugins.js</code> — here you put all the plugins that runs with all of your pages (i.e. jquery, backbone, knockout, and so on.);</p> <p><code>/assets/js/home/bootstrap.js</code> — <strong>here is the magic:</strong> in this file you have to fill with the code that your home will call;</p> <p><code>/assets/js/contact/bootstrap.js</code> — the same as before: this file you should to place with the code that your contact page will call.</p> <p><strong>HINT:</strong> <em>core.js</em> and <em>plugins.js</em> can occupy the same file when you deploy your application. To better comprehension and developing, it is good to maintain them into separated files.</p> <h2>Third party plugins</h2> <p>To give you an idea, the file of your plugins should be like this:</p> <pre><code>/* PlaceHolder plugin | http://www.placeholderjs.com/ | by @phowner */ ; $(function(){ /* the placeholder's plugin goes here. */ }); /* Masked Inputs plugin | http://www.maskedjs.com/ | by @maskedowner */ ; $(function(){ /* the masked input's plugin goes here. */ }); /* Mousewheel plugin | http://www.mousewheeljs.com/ | by @mousewheelowner */ ; $(function(){ /* the mousewheel's plugin goes here. */ }); </code></pre>
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    1. POJavaScript: it is better to have one big file or multiple light files?
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    1. COIt is not always best to group all your files together unless you are using the same exact files on all your pages, or have a single page app.
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    2. COI forget this detail, @Reimius. I will work on it.
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    3. COTake a look now, @Reimius.
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