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• Thumbnails from HTML pages created and used automatically in web application

  - by Jesper Rønn-Jensen

  I am working on a Ruby on Rails app that visualizes product trees. The tree is built of nodes an everything is rendered in HTML/CSS3. Some of the products make several hundred SQL queries as the tree builds up (up to 800 queries on the biggest tree). I'd like to have small thumbnails of each tree to present it on an index page. So rendering each tree once again and modifying CSS to make a tiny representation is an option. But i think it's probably easier to generate thumbnails, crop, cache, and show these on the index page. Any ideas on how to do this? Any links/articles/blog posts that could help me?

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• can't get height of object in chrome

  - by Cinaird

  i want to get the height property of a object: thisImage = $('#topContent img').get(index); so long no problem, but then i want to get the height like this: thisImage.height; i thought it was equvivilent to: thisImage.height(); or: thisImage.css("height"); but neither does work for me. And the greatest problem is that thisImage.height; Dose not work in chrome. Have i missed something or is this a known bug? is there another way to get the height in chrome?

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• Full page reload on Post/Redirect/Get ignoring cache control

  - by Kristof Neirynck

  I have a page that loads a lot of images, css and javascript. I've added a far future Expires header and set Cache-Control to public on these external dependencies so they should be cached. But every time I do a Post/Redirect/Get chrome tries to load these again. This behavior is very similar to reloading the page. I've added ETags and handle the If-None-Match header which helps a bit, but it still generates too many useless requests. How do I tell chrome and safari to get the files from cache? chrome NOK safari NOK firefox OK ie OK Also see Full page reload on Post/Redirect/Get ignoring cache control on the google support forum.

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• Is it possible to create a flash movie from only actionscript?

  - by Metropolis

  Hey Everyone, Currently I am mostly a PHP/Javascript/CSS/HTML applications programmer. But I would like to start learning how to create flash movies also. However, I do not want to spend the money to get CS4. Can I create flash movies from only Actionscript 3? Or would anyone recommend that I jump straight to air? All of the different adobe products, which do the same thing, confuse me. I just do not want to jump into it and then find out that I have to spend 900 dollars for the IDE. I really just want to code, and not have to use the IDE. Thanks, Metropolis

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• Hidden Features of ActionScript

  - by Ole Jak

  What are some of the hidden features of ActionScript? ActionScript is widely used language. It has been around for so many years. So at least from the existing features, do you know any that are not well known but very useful. Of course, this question is along the lines of: Hidden Features of JavaScript Hidden Features of CSS Hidden Features of C# Hidden Features of VB.NET Hidden Features of Java Hidden Features of ASP.NET Hidden Features of Python Hidden Features of TextPad Hidden Features of Eclipse Hidden Features of HTML Do not mention features of ActionScript 2.0, since it is quite old and not eweryone can understend it now Please specify one feature per answer. Note that it's not always a great idea to use these hidden features; often times they are surprising and confusing to others reading your code.

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• jquery - dom manipulation

  - by grega g

  I would like to show in dialog all elements with specific class. The dialog should hide the rest of the page. So for example: On this SO page I want to show all elements with class="user-info". Those elements would be shown in dialog with same width and height and same css and everything else would be hidden. It would be like cutting them out of the page and pasting them in a dialog. Any ideas how this could be done?

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• What every web developer should know?

  - by arikfr

  Let's say you got a new intern, who's a third-year CS student. He has firm knowledge of the basics, has some experience with C/Java from the courses he took and a lot of desire to learn more. What would you teach him in order to become a good web developer? What I had in mind is: HTML/CSS and the importance of writing semantic markup Javascript, some JS framework (jQuery), JSON Basics of Git/Subversion (whatever you use) The language we use (Ruby, Python, PHP, C#, whatever) Introduction the web framework we use (Rails, Django, ASP.NET MVC...) MVC - what/why/who RESTful web services - how to consume them and how to create one What's on your list?

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• Create unordered list tree menu from data stored in an table with the adjacency list model...php

  - by Ronedog

  I need to create a tree menu of "nth" subcategories. I settled on using the adjacency list model for my table structure, because I won't be updating this table very much and this seemed the easiest to implement for my use. I want to style the output using "ul" and "li" tags...I already have a css and jquery solution to do the styling. My problem comes from pulling the data out of the database and using a recursive function via PHP to build the list ... the list is a concatenated string that gets parsed to build the tree. I'm really having a hard time getting the closing "ul" and "li" tags to line up just where they need to be. Is this the best way to do this? Are there other better ways using arrays or something like that to do this? Any examples you can point me to of "best practices" for building a list like this will be appreciated. Thanks.

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• Parse error: syntax error, unexpected T_PUBLIC in ..... ?

  - by tonsils

  Hi, I am new to php and trying out this tutorial at : http://css-tricks.com/php-for-beginners-building-your-first-simple-cms/ Unfortunately I am getting the following error and can't seem to track down the reason: Parse error: syntax error, unexpected T_PUBLIC in ../simpleCMS.php on line 56 My code for simpleCMS.php is as is in the tutorial link above. FYI, my line 56 is the following line of code in simpleCMS.php public function display_admin() { Above this line is public function display_public() Can anyone possibly see what I could be doing wrong and again, my code is the same code from the tutorial website and have downloaded the files that came with it? Hoping someone can point me in the right direction. Furthermore, I am using Mac OS X MAMP to run my Apache/MySQL Server locally. My other question is, when I using the following command: mysql_connect($this->host,$this->username,$this->password) is my hostname 'localhost' alone or do I also have to include port alongside the localhost? Thanks again.

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• Python Framework for small website

  - by mvid

  I am planning a small, simple website to showcase myself as an engineer. My preferred language is Python and I hope to use it to create my website. My pages will be mostly static, with some database stored posts/links. The site will be simple, but I would like to have freedom in how it operates. I plan on using CSS/JS for the design, so I really just need an easy way to throw a small amount of content around. Some frameworks I have come across: Flask cherry.py Pinax Are there any suggestions? Does anyone have any experience with Python on small/hobby websites?

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• problem in leigeber's sorting

  - by developer

  iam using leigeber's sorting javascript to sort my data on my page......i took the js from here :- leigeber's sorting javascript Now this is shwoing highlighted sorted column and all and its all perfect.Now iam having some negative and some positive values in my data and i want to show those negative data in red color and positive in green.This whole sorting thing is using js and css to do the highlighting and sorting.Iam a bit confused now and cant make it out that how i can assign red color to the negative ones and green to the positive ones as js is returning the data as an object i.e. a complete row and i cant make 1 column's data red or green.Will it be done by js itself or with the help of stylesheet to find -ves and +ves.Im totally lost and dont know how to do it.Please help!!!! this is an example of hte data iam using this whole sorting thing on:- -Name- -Price- -loss- -Pts- abc 361.15 -5.68 -21.75 abc2 1072.35 -5.24 -59.25 abc3 512.35 5.24 28.35 abc4 335.2 -5.02 -17.7 abc5 318.6 5.01 -16.8 abc6 76.15 -4.15 3.3

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• jQuery pre document ready event

  - by Luke Duddridge

  Hi, I have a list of 179 thumbnail images that I am trying to apply a jQuery lightbox tool to an unorder list of hyper-links. The problem I have is, the jQuery isnt firing until the images have finished downloading, each image is around 23K so on their own, not so big, but as a group this equates to around 4MB. There is a delay on IE (main browser used by clients) of a good 5 seconds before the page has completely downloaded every thumbnail and then allows the jQuery to fire. I have tried putting the jQuery document ready event in various places with no success, and only been able to put a bandaid on by setting the css on the ul to hide using display:none before applying .show() after the lightbox has applied. I was hoping there is a way to make the jQuery scripts fire before all the content has downloaded? Cheers

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• Custom ASP.NET MVC cache controllers in a shared hosting environment?

  - by Daniel Crenna

  I'm using custom controllers that cache static resources (CSS, JS, etc.) and images. I'm currently working with a hosting provider that has set me up under a full trust profile. Despite being in full trust, my controllers fail because the caching strategy relies on the File class to directly open a resource file prior to treatment and storage in memory. Is this something that would likely occur in all full trust shared hosting environments or is this specific to my host? The static files live within my application's structure and not in an arbitrary server path. It seems to me that custom caching would require code to access the file directly, and am hoping someone else has dealt with this issue.

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• Will be self-taught limit me?

  - by Isaiah

  I'm 21 and am pretty efficient in html/css, python, and javascript. I also know my way around lisp languages and enjoy programing in them. My problem is that I'm extremely self-taught and not quite confident that I could land a job programing, but I really need a job soon as I've just become a father. I haven't even created a resume yet because I'm not really sure what to put on it except my lone experience. So I wanted to ask, will being primarily self-taught with some experience on small projects I've done for a few clients limit me too much? I mean I know I need some kind of education so I've enrolled part time in a community college to work on a degree in computer science, but it's years till then. And if it will limit me a lot, what kind of skills would be good to work on to make my chances any better? Thank You

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• Verbose Listing of All Application Layers/Tiers?

  - by leeand00

  I've looked at a few sites now, and I'm still struggling to find a complete listing of all the possible layers/tiers you can have in an application. From back in college (1999) I remember the following: Presentation Layer (Views) Application Layer (Controllers) Business Logic Layer (API/Rules) Persistence Layer (Database/Object Persistence/Model) I'm not advocating that they all be used...especially when you consider that too many layers/tiers could lead to an increase in complexity...I just wondered what the complete list might look like... Based on a couple of blogs I've found several different answers...and Javascript and client side technologies seem to have leaked in adding more client-side layers according to one blog the client side tier might even consist of Behavior Layer (Javascript, Flash) Presentation Layer (CSS/Images) Note: I though the entire client side layer was the presentation layer Structure Layer (XHTML, HTML) I'm just trying to get an abstract idea of what all the possible layers might be, (even though some people call them different things)

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• No Flash, How do i handle jcupload ?

  - by acidzombie24

  I am using http://www.jcupload.com/ (basic) to upload files. I am considering having a friend write a more custom version or to do magic with ajax; so the solution should be able to work without that. With jcupload i include css, a script and write <div id="jcupload_content"></div> in my html and i am done. Problem is, with no flash i get an object box. Instead i would like is an iframe or a html form to upload the file. How do i do this? Should i detect flash from javascript and overload the div myself if no flash is available? How do i detect if flash is available? with jquery i know i can write something like $('#jcupload_content').innerHtml = blah; How do i handle the flash part?

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• Options for non-native form inputs for the web?

  - by Sam Lee

  I'm wondering if there are any good non-native form inputs for web development? I am currently using the built in <input> controls. They work just fine, but for my application they are too big (especially on OS X). I am wondering if there are any libraries that I can drop in as replacements. I am especially interested in ones that: Are a close to native control behavior as possible. Support for tabbing, highlighting current textbox, pressing up/down in <select>, etc. Have something that replicates <select> Look good and are compact I am aware that you can use CSS for some styling, but it's pretty minimal and looks different depending on the browser. Thanks for your help.

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• What's the best way to do cross browser testing?

  - by Doug

  What's the best way for me to check if my website is compatible in IE7,8, Safari, FF, and Chrome without having to install each and everyone? I mainly want to check the CSS, HTML, and JavaScript. Update I put a bounty in hopes there is a more practical solution for someone like myself. I am using Windows 7 Home Premium x64. Update2 I don't mind installing these browsers now, but I can't even if I wanted to. Windows 7 doesn't allow me to install IE7.

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• PhoneGap + JqueryMobile on Xcode

  - by aeternus828

  Attempting a beginner's tutorial. I have the following in my head: <script type="text/javascript" charset="utf-8" src="cordova-1.5.0.js"></script> <linkrel="stylesheet"href="http://code.jquery.com/mobile/1.0.1/jquery.mobile1.0.1.min.css" /> <script src="http://code.jquery.com/jquery-1.7.1.min.js"></script> <script src="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.js"></script> My result is just text, no Jquery mobile styling.

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• how to using jquery get select element has MULTIPLE mode and reverse

  - by Rueta

  Hi everyone! I have a stack with my work today. My stack here: I have a select html element and it has MULTIPLE mode: <select class="test" MULTIPLE></select> (MULTIPLE mode also type as : multiple="multiple" i inclue here) <select class="test" multiple='multiple'></select> now i only want select this element in many normal select element: <select class="test" ></select> <select class="test" ></select> <select class="test" multiple='multiple'></select> <select class="test"> </select> i was using jQ like this: $(".test[!MULTIPLE]").css('border','solid 1px red'); but all select element has border red; How can i get only select element MULTIPLE. And get select not MULTIPLE mode?

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• how to set the background image property of a div to a dynamically generated image

  - by tixrus

  I have some divs and each one has its own background image. The base images as stored is just a black silhouette. What I would like to do is use the PHP GD package to modify the color of those images somewhat randomly and have the modified randomly coloured images be the background images of the divs. One way to do it is just create GD images structures from the original files, modify them, save the results as a temp file, pass this filename into the client, and then use jquery to modify the css background image properties of the divs to be the new file. But this is going to leave a lot of files laying around to garbage collect. Is there some way to do it without creating a bunch of files?

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• JavaScript: jQuery Datepicker - simple highlighting of specific days, who can help? (source inside)

  - by Klicker.eu

  Hi guys, i want to use the Datepicker for highlighting specific dates. Here is my latest code: <script type="text/javascript"> var dates = [30/04/2010, 01/05/2010]; $(function(){ $('#datepicker').datepicker({ numberOfMonths: [2,3], dateFormat: 'dd/mm/yy', beforeShowDay: highlightDays }); function highlightDays(date) { for (var i = 0; i < dates.length; i++) { if (dates[i] == date) { return [true, 'highlight']; } } return [true, '']; } }); </script> my CSS is: #highlight, .highlight { background-color: #cccccc; } Well the calendar comes up, but there is nothing highlighted. Where is the problem in my code? If anyone could help that would be great. Another option/solution could be: disable all dates, but make available only dates in an array. Thanks!

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• iWebKit/iPhone: Chatbox with MySQL, AJAX, PHP and Javascript

  - by YourComputerHelpZ

  Hello, i am busy with a chatbox that contains MySQL, AJAX, PHP and Javascript. Now i want to have this on my iPod Touch/iPhone, so i am building a website with iWebKit. The following codes i provided is done now; just asking why it does not display the chatbox itself (so not the senders) after more than 2 lines are entered... What codes should i add or remove... Thanks. I guess something with CSS or so, but i am not sure where i should apply it and what... Or maybe something else? Download .zip here with all files

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• How to design html timetable

  - by Conor H

  Hi There, I'm currently working on a project where I need to print out a lesson timetable. Here is a link to the one I have created http://conorhackett.com/tt/. It works fine now but i'd like to have more control over it. If you look at the code you'll see what I mean. The html/css is very messy. I've tried to do it with a html table but it didn't look great with all the lines. Is there any foundations available to me that I could use as a base.? Any adive greatly appreciated :) --Conor

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• HTTP Cache Control max-age, must-revalidate

  - by nyb

  I have a couple of queries related to Cache-Control. If I specify Cache-Control "max-age=3600, must-revalidate" for a static html/js/images/css file, with Last Modified Header defined in HTTP header, a. Does browser/proxy cache(liek Squid/Akamai) go all the way to orgin server to validate before max-age expires? Or will it serve content from cache till max-age expires? b. After max-age expiry(that is expiry from cache), is there a IMS check or is content re-downloaded from origin server w/o IMS check?

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