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  • Why .data() function of jQuery is better to prevent memory leaks?

    - by burak ozdogan
    Hi, Regarding to jQuery utility function jQuery.data() the online documentation says: "The jQuery.data() method allows us to attach data of any type to DOM elements in a way that is safe from circular references and therefore from memory leaks. " Why to use: document.body.foo = 52; can result a memory leak -or in what conditions- so that I should use jQuery.data(document.body, 'foo', 52); Should I ALWAYS prefer .data() instead of using expandos in any case? (I would appreciate if you can provide an example to compare the differences) Thanks, burak ozdogan

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  • Newsletter subscription feature in a website

    - by harigm
    Hi, I am trying to implement a Newsletter feature for my website www.cricandcric.com Can you please tell me is that a good idea to develop a code or Shall I get a open source to integrate this feature in the site? if Yes, which Open Source Is good for this feature(without any Malware, Spyware, Spamming feature) Can you please guide me on this?

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  • Chrome Extension: How to display tab objects?

    - by Jalleluhah
    I am in the process of designing an extension for Google Chrome that helps to organize tabs (I know, there are many that already exist; that doesn't matter). I wish to open a popup window that will display tabs as objects (i.e., in the same way that it is displayed in the tab bar at the top of the browser). One way of doing this would be to pull various details (ID, Title, URL, etc.) from each tab, create a class and make instantiations of it upon the opening of each tab using these data, but this seems rather convoluted considering that what I want is sitting right there in the tab bar. Is there any simpler way to achieve this? In addition, I have seen several apps that utilize page previews. Is there something in the API that allows direct access to these?

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  • Binding jQuery UI plugin after $.load

    - by TomWilsonFL
    I have a function that attaches the jQuery UI DatePicker (with my options) to a passed jQuery object: function bindDatepicker($obj) { if ($obj == null) $obj = $("input.date"); $obj.datepicker( { appendText: '(yyyy-mm-dd)', autoSize: true, changeMonth: true, changeYear: true, closeText: 'Done', dateFormat: 'yy-mm-dd', defaultDate: '+1m', minDate: +1, numberOfMonths: 2 } ); } I call this at the beginning of every page to bind it to input elements: $(function() { bindDatepicker($("input.date")); }); This works fine. My problem comes in when I load form elements using $.load(). I cannot attach the DatePicker to any of the loaded elements. For example: $("#id").load("urlToLoad", function() { bindDatepicker($("input.date")); }); Loads the form elements into a div just fine, but will not attach the DatePicker. Why is this? I am stumped. :( Thanks, Tom

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  • Is there a way in PHP to check if a directory is a symlink?

    - by tixrus
    The title says it all. I have symlinks to certain directories because the directories' names have non English characters that I got fed up trying to get apache's rewrite rules to match. There's a bounty on that question http://stackoverflow.com/questions/2916194/trouble-with-utf-8-chars-apache2-rewrite-rulesif anyone wants to go for it, and from the looks of things a lot of people would like to see a general solution to this problem, but meanwhile I made a plain ascii symlink to each of these offending directories. Now the rewrite rules are back to just alpha and _ and - and my security concerns are less and it loads the resources I want. But I still need the actual target directory name for display purposes. I googled "PHP directory info, PHP symlink" but didn't find anything. I need to do something like this: if (is_symlink($myResDirName)) { $realDirName = follow_symlink($myResDirName); }

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  • How can I structure my MustacheJS template to add dynamic classes based on the values from a JSON file?

    - by JGallardo
    OBJECTIVE To build an app that allows the user to search for locations. CURRENT STATE At the moment the locations listed are few, so they are just all presented when landing on the "dealers" page. BACKGROUND Previously there were only about 50 showrooms carrying a product we sell, so a static HTML page was fine. And displays as But the page size grew to about 1500 lines of code after doing this. We have gotten more and need a scalable solution so that we can add many more dealers fast. In other projects, I have previously used MustacheJS and to load in values from a JSON file. I know the ideally this will be an AJAX application. Perhaps I might be better off with database here? Below is what I have in mind so far, and it "works" up to a certain point, but seems not to be anywhere near the most sustainable solution that can be efficiently scaled. HTML <a id="{{state}}"></a> <div> <h4>{{dealer}} : {{city}}, {{state}} {{l_type}}</h4> <div class="{{icon_class}}"> <ul> <li><i class="icon-map-marker"></i></li> <li><i class="icon-phone"></i></li> <li><i class="icon-print"></i></li> </ul> </div> <div class="listingInfo"> <p>{{street}} <br>{{suite}}<br> {{city}}, {{state}} {{zip}}<br> Phone: {{phone}}<br> {{toll_free}}<br> {{fax}} </p> </div> </div> <hr> JSON { "dealers" : [ { "dealer":"Benco Dental", "City":"Denver", "state":"CO", "zip":"80112", "l_type":"Showroom", "icon_class":"listingIcons_3la", "phone":"(303) 790-1421", "toll_free":null, "fax":"(303) 790-1421" }, { "dealer":"Burkhardt Dental Supply", "City":"Portland", "state":"OR", "zip":"97220", "l_type":"Showroom", "icon_class":"listingIcons", "phone":" (503) 252-9777", "toll_free":"(800) 367-3030", "fax":"(866) 408-3488" } ]} CHALLENGES The CSS class wrapping the ul will vary based on how many fields there are. In this case there are 3, so the class is "listingIcons_3la" The "toll free" number section should only show up if in fact, there is a toll free number. the fax number should only show up if there is a value for a fax number.

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  • jquery version of array.contains

    - by morgancodes
    Can jquery test an array for the presence of an object (either as part of the core functionality or via an avaible plugin). Also, I'm looking for something like array.remove, which would remove a given object from an array. Can jquery handle this for me? thanks, -Morgan

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  • Is there a jQuery plugin for error messages at top like Twitter?

    - by sami
    I'm looking for a jquery plugin that would create an errors div like what twitter has. The div gets added by the plugin, it stays hidden while it doesn't have content, then when a message gets added to it, it appears at the top (with either a close button option or automatic disappear after an x number of seconds). It's not too difficult to write, but there would be no reason to write it if it's already been done before. Anyone knows of a plugin like that?

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  • make changes to html before append with jquery

    - by Pradyut Bhattacharya
    I m calling a page using ajax and making changes to it using jquery but the changes are not reflected after appending(append) it to a div as the changes are done to the html but the html var remains the same. how do i make the changes to the html var and then append to the DOM if i use the code directly to the DOM then there will be changes in the previous elements in the DOM the code $.ajax({ type: "POST", url: 'more_images.jsp', data: ({uid:uid, aid:aid, imgid:imgid}) , cache: false, success: function(html) { html = $.trim(html); $(html).filter('.corner-all').corner('5px'); $(html).filter('ol.c_album > li .img_c').corner('3px'); $(html).filter("ol.c_album > li ").find('a').attr('target', '_blank'); $('#images_list').append(html); } }); thanks Pradyut

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  • Designing code for a duo Website + AIR desktop App

    - by faB
    I want to use AIR to create an OFFLINE version of a "webapp" kind of website (lots of ajax, front end code). Haven't been much further than the HelloWorld example, I keep wondering: how do you design your code, to maximize code reuse between the website (say in php or Java or .Net), and the AIR app ? Can you actually re-use 100% of the front end code, provided that it is designed to account for the AIR app ? How would you go about doing that ? For example, the website makes many Ajax calls which have latency, and uses listeners. The AIR app doesn't need listeners it could run database requests synchronously, and it doesn't need to run ajax calls right? Would you write an abstraction layer for that ? So that the same calls on the AIR app will not do a xmlhttp but instead implement the server-side code with AIR; and call the listener ? So you don't have to rewrite the front end code patterns ? Does this make sense ? It's really hard to search on Google. I'm thinking there must be a good article somewhere of somebody who went through and perhaps a framework to do that ?

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  • Recommendations on Triming Large Amounts of Text from a DOM Object

    - by aronchick
    I'm doing some in browser editing, and I have some content that's on the order of around 20k characters long in a <pre>. So it looks something like: <pre> Text 1 Text 2 Text 3 Text 4 [...] Text 20,000 </pre> I'd like to use jquery to trim it down when someone hits a button to chop, but I'm having trouble doing it without overloading the browser. Assume I know that the character numbers are at 16,510 - 17,888, and what I'd like to do is trim it. I was using: jQuery('#textsection').html(jQuery('textarea').html().substr(range.start)); But browsers seem to enjoy crashing when I do this. Alternatives?

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  • N-son tabbed/JsScrollbar, trying to force gif play from click of link using jquery

    - by user314286
    Hello everyone, Let me start off by stating the obvious; I am new here. That said I hope I am not violating some standard I missed by posting this. xD For several days now I've been trying to update a rather old site of mine, to which I wont link to given that the update is so drastic that the current product on which I seek your help for doesn't resemble the old site in any other way then appearance. Anywho! I am using the tabbed div and JsScrollbar created by N-son (http://www.downloadjavascripts.com/list/javasitek60/Details.aspx) and so far have only used jquery to dynamically center content on the page. My problem however is this...I have a gif on the page that acts as a background (it's not tiled) and I'd like to be able to have it so that when you click on one of the links used in n-sons tabs (EX: news) it also causes the gif to load and play through itself once. So far all my attempts at accomplishing this myself have failed and break wither the scrollbar or prevent the content from switching when you click the tabs. (Except for one failed attempt where it all worked fine except the handle for the scrollbar would vanish upon switching tabs) I hope I've been clear in this and that someone is able to help. I know it may seem like a silly question but we're all new at some point. :P If need be I'll upload what coding I have but it is not pretty. Thank you in advance.

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  • start to preload content after a complete page load

    - by amit
    i am trying to make the preloading work in such a way that the components i wish to preload start to load after successfully loading the page. for example, i have index.php. i want it to load up completely. as soon as it loads up i want to start loading the other components. to make things clear. i have a nav that makes use of large size images. if i load them along with the index.php file, it would increase load up time of the page. i wish for those large images to load after completely rendering index.php? am i making sense? is it possible?

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  • Google Maps: How does Trulia create their custom InfoWIndows?

    - by NickT
    I really like how Trulia.com has created their custom Google Map InfoWindows. What I like in particular about Trulia's implementation of the InfoWindow is: Extends beyond the map border: Google Maps InfoWindows are contained within the map border whereas Trulia's seems to be able to float on-top of the map Always displays InfoWindow near map Center: Google Maps InfoWindows always display the InfoWindow above the marker whereas Trulia InfoWindows always display the InfoWindow as close the center of the map as possible. For example, if the map marker icon is on the top of the map near the border, the Trulia InfoWindow is displayed below the map marker icon InfoWindow is displayed on mouse hover (not 'click'): With the default Google Maps InfoWindow, you have to 'click' the map marker icon to display the InfoWindow whereas Trulia InfoWindows are display simply by hovering over the map marker icon. I found the PdMarker, which is a 3rd party extension for Google Map InfoWindows that accomplishes most of the above bullets but not all. 1) It does not extend beyond the map border, 2) it does not work with Google Maps API version 3 (only version 2). Anyone know how Trulia is accomplishing their InfoWindow-like implementation on Google Maps API v3?

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  • Php and Jquery Validation: with Jquery Form Plugin

    - by Jacinto
    Hi, This is the first time I have attempted to make a form using jquery and php. I used the folks over at Mid Mo Design as an example but even with that tutorial am still having trouble getting it to do what I want. This is the code I have been using. As well as jquery 1.4.1 and jQuery Form Plugin 2.43. Any help would be greatly appreciated. css scrollContact { border-top: double 1px #0D0D0D; padding: 100px 50px 50px 50px; background: #020303; position: relative; overflow: hidden; width: 924px; text-align: justify; } .contactInfo { float:left; width: 214px; margin-right: 10px; margin-top: 5px; } contactForm { float: left; width: 700px; } contactForm span { float: left; margin:5px; width: 455px; } input, textarea { -moz-border-radius:5px 5px 5px 5px; border:1px solid #001932; color:#BBBBBB; font:1.1em Verdana,Geneva,sans-serif; background: #0A0A0A; } input:hover, textarea:hover { border:1px solid #0278f2; background: #242424; } contactForm span input { line-height:1.8em; width:430px; padding:11px 10px; margin: 0px 0px 10px 0px; } contactForm input { line-height:1.8em; width:200px; padding:11px 10px; margin: 5px; } contactForm textarea { height:190px; line-height:1.8em; width:430px; padding:10px; } .message { background:#eee; color:#000; display:none; padding:10px; height: 70px; position: absolute; bottom:0px; } Html Contact Navigate To: Work services about contact Get A Free Quote Thank you for your interest in contacting me. Please use the form to the right to contact me via email. I will respond to your inquiry as soon as possible. Please note all fields are required. What Next? Thank you for your interest in contacting me. Please use the form to the right to contact me via email. I will respond to your inquiry as soon as possible. Please note all fields are required. Your Message Php <?php $sendto = '[email protected]'; $subject = 'Contact from contact form'; $errormessage = 'Oops! There seems to have been a problem. May we suggest...'; $thanks = "Thanks for the email! We'll get back to you as soon as possible!"; $honeypot = "You filled in the honeypot! If you're human, try again!"; $emptyname = 'Entering your name?'; $emptyemail = 'Entering your email address?'; $emptytitle = 'Entering The Subject?'; $emptymessage = 'Entering a message?'; $alertname = 'Entering your name using only the standard alphabet?'; $alertemail = 'Entering your email in this format: [email protected]?'; $alerttitle = 'Entering the subject using only the standard alphabet?'; $alertmessage = "Making sure you aren't using any parenthesis or other escaping characters in the message? Most URLS are fine though!"; $alert = ''; $pass = 0; function clean_var($variable) { $variable = strip_tags(stripslashes(trim(rtrim($variable)))); return $variable; } if ( empty($_REQUEST['last']) ) { if ( empty($_REQUEST['contactName']) ) { $pass = 1; $alert .= "" . $emptyname . ""; } elseif ( ereg( "[][{}()*+?.\^$|]", $_REQUEST['contactName'] ) ) { $pass = 1; $alert .= "" . $alertname . ""; } if ( empty($_REQUEST['contactEmail']) ) { $pass = 1; $alert .= "" . $emptyemail . ""; } elseif ( !eregi("^[_a-z0-9-]+(.[_a-z0-9-]+)@[a-z0-9-]+(.[a-z0-9-]+)(.[a-z]{2,3})$", $_REQUEST['contactEmail']) ) { $pass = 1; $alert .= "" . $alertemail . ""; } if ( empty($_REQUEST['contactTitle']) ) { $pass = 1; $alert .= "" . $emptytitle . ""; } elseif ( ereg( "[][{}()*+?.\^$|]", $_REQUEST['contactTitle'] ) ) { $pass = 1; $alert .= "" . $alerttitle . ""; } if ( empty($_REQUEST['contactMessage']) ) { $pass = 1; $alert .= "" . $emptymessage . ""; } elseif ( ereg( "[][{}()*+?\^$|]", $_REQUEST['contactMessage'] ) ) { $pass = 1; $alert .= "" . $alertmessage . ""; } if ( $pass==1 ) { echo "$(\".message\").hide(\"slow\").show(\"slow\"); "; echo "" . $errormessage . ""; echo ""; echo $alert; echo ""; } elseif (isset($_REQUEST['message'])) { $message = "From: " . clean_var($_REQUEST['contactName']) . "\n"; $message .= "Email: " . clean_var($_REQUEST['contactEmail']) . "\n"; $message .= "Telephone: " . clean_var($_REQUEST['contactTitle']) . "\n"; $message .= "Message: \n" . clean_var($_REQUEST['contactMessage']); $header = 'From:'. clean_var($_REQUEST['contactEmail']); mail($sendto, $subject, $message, $header); echo "$(\".message\").hide(\"slow\").show(\"slow\").animate({opacity: 1.0}, 4000).hide(\"slow\"); $(':input').clearForm() "; echo $thanks; die(); } } else { echo "$(\".message\").hide(\"slow\").show(\"slow\"); "; echo $honeypot; } ?

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  • grunt server command not found in terminal

    - by user3413185
    In my project directory i installed grunt using the following command npm install grunt...after that i did grunt server in my project directory but it gives me command not found error.. providing my error below.. can you tell me how to fix it.. Raj$ grunt server -bash: grunt: command not found npm install grunt npm install grunt npm WARN package.json [email protected] No description npm WARN package.json [email protected] No repository field. npm WARN package.json [email protected] No README data

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  • Another IE Issue with AJAX

    - by Nik
    Alright, This code works in every browser except IE (again, to be expected). The code is supposed to refresh based on setInterval, and does so normally in all other browsers except IE, which just doesn't refresh. Can you spot the problem? var nick = document.getElementById("chatnick").value; var sessid = document.getElementById("sessid").value; var room = document.getElementById("roomid").value; function user_read() { $.ajax({ type: "GET", url: "methods.php", data: {method: "u", room: room}, dataType: "html", success: function (data, status, xhr) { $("#userwindow").html(data); setTimeout(user_read, 10000); } }); } function ajax_read() { $.ajax({ type: "GET", url: "methods.php", data: {method: "r", room: room}, dataType: "html", success: function (data, status, xhr) { $("#chatwindow").html(data); setTimeout(ajax_read, 400); } }); } function submit_msg() { var msg = document.getElementById("chatmsg").value; $.ajax({ type: "GET", url: "methods.php", data: {method: "w", room: room, m: msg, n: nick, sessid: sessid}, dataType: "html", success: function (data, status, xhr) { } }); document.getElementById("chatmsg").value = ""; } function keyup(arg1) { if (arg1 == 13) submit_msg(); } setTimeout(function(){ajax_read();}, 400); user_read();

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  • Fun with Lambdas

    - by Roman A. Taycher
    Not having them used them all that much I'm not quite sure all that lambdas/blocks can be used for (other than map/collect/do/lightweight local function syntax). If some people could post some interesting but somewhat understandable examples (with explanation). preferred languages for examples: python, smalltalk, haskell

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  • How do I assign custom classes to YUI3 plugin/widget objects

    - by Akshar Prabhu Desai
    Consider the following code. var overlay = new Y.Overlay({ id:'tooltip-tag', bodyContent:"Loading.....", xy:[e.target.getX(),e.target.getY()+30] }); The overlay gets the id as given in attributes. But what if I want to add a class ? IS there something like: var overlay = new Y.Overlay({ **class:'tooltip-tag'**, bodyContent:"Loading.....", xy:[e.target.getX(),e.target.getY()+30] });

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