Many times I have come across javascript script includes some of them are placed in the head portion and some are placed at the end of the body. And in some cases of jQuery I have seen the same. Can anyone tell me what is the difference and significant between putting scripts in the head or at the end of the body?
123687
Say I have a fairly hefty JavaScript file, packed down to roughly 100kb or so. By file I mean it’s an external file that would be linked in via &lt;script src="..."&gt;, not pasted into the HTML itself.  Where’s the best place to put this in the HTML?  &lt;html&gt; &lt;head&gt;     &lt;!-- here? --&gt;     &lt;link rel="stylesheet" href="stylez.css" type="text/css" /&gt;     &lt;!-- here? --&gt; &lt;/head&gt; &lt;body&gt;     &lt;!-- here? --&gt;     &lt;p&gt;All the page content ...&lt;/p&gt;     &lt;!-- or here? --&gt; &lt;/body&gt; &lt;/html&gt;   Will there be any functional difference between each of the options?
85712
When using the Text Editor, what is the best command to include inside a script which will abort the script at that line?  quit() and sys.exit() stop the script, but also kill Blender.
98772
I'm creating a plugin that allows a user to use a shortcode. This shortcode depends on a bunch of javascript that needs to be present once the shortcode loads.  I'm having issues trying to decide when and where to load the javascript. Pieces of the code that the shortcode spits out are elements that need to be present, but aren't available for jQuery to utilize.  Is there a specific way of loading and attaching scripts that a shortcode relies on?  function build_total_search_method( $atts ) {      $shorcode_php_function = include( dirname(__FILE__) . "/includes/total_search.php" );      return $shorcode_php_function;  } add_shortcode( 'total_search', 'build_total_search_method' );   This seems to work, but it also prints a 1 to the page. Is this method okay?
85862
This page does it the way I want it to:   But I want to find a better way using jQuery, can anyone point me to a good script that uses jQuery to accomplish this?
17789
We are building a webapp, so everyone asks me what content should be in header and why you are using a header at the top.  So my question is why are we using a header and logo at the top, we can use it at the right or left or bottom?  And what content should be in the header?
13680
In many situations, JavaScript parsers will insert semicolons for you if you leave them out. My question is, do you leave them out?  If you're unfamiliar with the rules, there's a description of semicolon insertion on the . Here's the key point:     If the first through the nth tokens of a JavaScript program form are grammatically valid but the first through the n+1st tokens are not and there is a line break between the nth tokens and the n+1st tokens, then the parser tries to parse the program again after inserting a virtual semicolon token between the nth and the n+1st tokens.   That description may be incomplete, because it doesn't explain @Dreas's example. Anybody have a link to the complete rules, or see why the example gets a semicolon? (I tried it in JScript.NET.)   is related, but only talks about a specific scenario.
48551
I want to write an application that detects when a page is loaded in the browser, then I should be able to insert content on top of the loaded web page? Anybody with an idea on how to do that?  Please note that I should be able to do this in any browser (Firefox/IE).  What language should I use to help me do this?  How do I detect this from an external application?  How should I integrate this with the browser?
48199
I've got this pretty simple HTML page with a jQuery datepicker:      &lt;!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt; &lt;head&gt;     &lt;title&gt;jQuery Datepicker&lt;/title&gt;     &lt;link rel="stylesheet" href="../App_Themes/Default/ui.datepicker.css" type="text/css"         media="screen" title="Smoothness" /&gt;      &lt;script src="../Shared/Scripts/jquery-1.2.6.min.js" type="text/javascript"&gt;&lt;/script&gt;      &lt;script src="../Shared/Scripts/jquery-ui-1.5.3.min.js" type="text/javascript"&gt;&lt;/script&gt;      &lt;script language="javascript" type="text/javascript"&gt;         $(document).ready(PageLoad);          function PageLoad() {             $('#textBox').datepicker();         }     &lt;/script&gt;  &lt;/head&gt; &lt;body&gt;     &lt;input type="text" id="textBox" /&gt; &lt;/body&gt; &lt;/html&gt;   The datepicker itself seems to work perfectly but I can't apply my theme. Am I missing something really stupid here?  Thanks !!!!
96109
I know that it is bad practice to use a "Go Back" button (since the browser has such a function) but when it can't be avoided for some reason, is it better to put it on top (similar to how the back buttons on browsers are on top) or at the bottom (similar to "cancel" buttons on forms)?  Let's say the page is not a form but rather a "Preview" / "View" page of some sort where user can view data.
56249
I have a web app that has a universal HTML header include, so I'd like to put page-specific scripts in each page instead of having it load for everything. I tried putting document.ready() near the end of the &lt;body&gt; of a page and it seems to be working fine. Are there any potential hazards to putting it there instead of inside the &lt;head&gt;?
92747
This one is a case of not doing your homework.:-)    Apart from dynamic loading advantage, does it make sense to include a JavaScript library(jQuery in my case ) from a Google server when I can load it from my server as a single file comprised of the 19kb jQuery zip file + the additional JavaScript code I have written – all compressed with a JS compressor and served HTTP deflated.    With Google server I’ll have 2(parallel) HTTP round trips. One to get the jquery file and the other to get the site JavaScript code. One 19kb and the other say 20-25kb.  Under normal circumstances it would be a single 30-35kb download from my site.
75718
I'm dynamically adding &lt;script&gt; tags to a page's &lt;head&gt;, and I'd like to be able to tell whether the loading failed in some way -- a 404, a script error in the loaded script, whatever.  In Firefox, this works:  var script_tag = document.createElement('script'); script_tag.setAttribute('type', 'text/javascript'); script_tag.setAttribute('src', 'http://fail.org/nonexistant.js'); script_tag.onerror = function() { alert("Loading failed!"); } document.getElementsByTagName('head')[0].appendChild(script_tag);   However, this doesn't work in IE or Safari.  Does anyone know of a way to make this work in browsers other than Firefox?  (I don't think a solution that requires placing special code within the .js files is a good one. It's inelegant and inflexible.)
48699
I've only written a small amount of JavaScript that runs embedded in a Java application, but it was tested using , has been mixed, and I've not noticed any problems yet.    Is there some conventional wisdom whether to use semicolons or not in JavaScript?
105443
The below script appears if I check the “Display the site links search box” in All in One SEO General Settings:  &lt;script type="application/ld+json"&gt;         {           "@context": "http://schema.org",           "@type": "WebSite",         "name": "mywebsite.com",        "potentialAction": {           "@type": "SearchAction",           "target": "http://mywebsite.com/?s={search_term}",           "query-input": "required name=search_term"         }, "url": "http://mywebsite.com/"         } &lt;/script&gt;   The below script appears if I configure the social sites under Social Meta:  &lt;script type="application/ld+json"&gt; { "@context" : "http://schema.org",   "@type" : "Organization",   "name" : "My Website",   "url" : "http://mywebsite.com",   "sameAs" : ["https://www.facebook.com/mywebsite","https://plus.google.com/+mywebsite","https://twitter.com/mywebsite"]  } &lt;/script&gt;    Can I have multiple ld+json scripts in the same page? If yes, what is the significance of the two scripts? Do I need to configure additional parameters for these scripts or this is enough to boost my site's SEO ranking?
56223
Any idea why the piece of code below does not add the script element to the DOM?  var code = "&lt;script&gt;&lt;/script&gt;"; $("#someElement").append(code);
108019
On a solaris HTML file, how do I insert between an html tag and head tag? through bash scripting.  I have an html tag that looks like this:  &lt;html xmlns="http://www.w3.org/1999/xhtml" xmlns:arf="http://scap.nist....-format/1.1" lang="en"&gt;   I want to insert a script written in text file, inside this 'SOLARIS' run HTML file, AFTER the long &lt;html....&gt; tag and BEFORE &lt;head&gt; tag, meaning BETWEEN the two tags, How do I do that?  I want to test using the bash commands to do it for one file at a time as well as multiple file in a folder directory. Will I have to use the folder path in my BASH code? Will I have to use FOR loop or interation in my BASH code? What would be the right code. Note: it is SOLARIS run html file not LINUX one. The name of my HTML file is report.usc20.html.  These are the lines of script that I want to use that are in my backbutton_and_scroller_script.txt file:  &lt;div id="button"&gt;&lt;a href="http://.....index.php"&gt;Back To The Hardening Page&lt;/a&gt;&lt;/div&gt; &lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="http://arrow.scrolltotop.com/arrow78.js"&gt;&lt;/script&gt; &lt;noscript&gt;Not seeing a &lt;a href="http://www.scrolltotop.com/"&gt;Scroll to Top Button&lt;/a&gt;? Go to our FAQ page for more info.&lt;/noscript&gt;
27396
The following are two methods of building a link that has the sole purpose of running JavaScript code. Which is better, in terms of functionality, page load speed, validation purposes, etc.?    function myJsFunc() {     alert("myJsFunc"); } &lt;a href="#" onclick="myJsFunc();"&gt;Run JavaScript Code&lt;/a&gt;     or    function myJsFunc() {     alert("myJsFunc"); }  &lt;a href="javascript:void(0)" onclick="myJsFunc();"&gt;Run JavaScript Code&lt;/a&gt;