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• Print specific part of webpage

  - by Grega Menih

  I'm trying to print a specific part of my application. The application has a list of users, displaying their first and last name. When I click a user I get a popup with more detailed information about them. How would I go about printing just the popup for a user I clicked? The popup looks like this: <div id="user<?=$user->id;?>" class="popup"> <div class="details"> User details... </div> <a href="#print">Print</a> </div> The print button isn't working yet though.

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• execute javascsript for loop alternately forward and backward

  - by Stiff Mittens

  What I'm trying to do is iterate through an array in chunks, alternating the direction of iteration from chunk to chunk. Confused? So am I. For example, if I want to loop thru an array with 25 elements, but I want to do it in this order: 0, 1, 2, 3, 4, 9, 8, 7, 6, 5, 10, 11, 12, 13, 14, 19, 18, 17, 16, 15, 20, 21, 22, 23, 24, what would be the most efficient way of doing this? I'm looking for something scalable because the array I'm working with now is actually 225 elements and I want to traverse it in 15 element chunks, but that may change at some point. So far, the only method I've figured out that actually works is to hard-wire the iteration order into a second array and then iterate through that in the normal way to get the indices for the original array. But that sucks. Any help would be greatly appreciated.

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• Why aren't my JQuery .ajax requests being made in parallel?

  - by Ryan Olson

  I am trying to make two ajax requests in parallel using jQuery like this: var sources = ["source1", "source2"]; $(sources).each(function() { var source = this; $.ajax({ async: true, type: "POST", data: {post: "data", in: "here"}, url: "/my/url/" + source, success: function(data) { process_result(data); } }); }); I got the basic structure from this question, but my requests still aren't being made in parallel. "source1" takes a while to complete, and I can see on the server that the second request isn't made until the first is completed. As far as I can tell, I don't have any other active requests, so I don't think it's a problem with the maximum number of parallel requests for the browser. Am I missing something else here?

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• How to evaluate json member using variable ?

  - by Miftah

  Hi i've got a problem evaluating json. My goal is to insert json member value to a function variable, take a look at this function func_load_session(svar){ var id = ''; $.getJSON('data/session.php?load='+svar, function(json){ eval('id = json.'+svar); }); return id; } this code i load session from php file that i've store beforehand. i store that session variable using dynamic var. <?php /* * format ?var=[nama_var]&val=[nilai_nama_var] */ $var = $_GET['var']; $val = $_GET['val']; $load = $_GET['load']; session_start(); if($var){ $_SESSION["$var"] = $val; echo "Store SESSION[\"$var\"] = '".$_SESSION["$var"]."'"; }else if($load){ echo $_SESSION["$load"]; } ?> using firebug, i get expected response but i also received error uncaught exception: Syntax error, unrecognized expression: ) pointing at this eval('id = json.'+svar); i wonder how to solve this

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• Sequencing ajax requests

  - by Scott Evernden

  I find I sometimes need to iterate some collection and make an ajax call for each element. I want each call to return before moving to the next element so that I don't blast the server with requests - which often leads to other issues. And I don't want to set async to false and freeze the browser. Usually this involves setting up some kind of iterator context that i step thru upon each success callback. I think there must be a cleaner simpler way? Does anyone have a clever design pattern for how to neatly work thru a collection making ajax calls for each item?

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• How to access a method of a closure's parent object?

  - by Bytecode Ninja

  I have defined a class named MyClass and I have defined two methods myMethod1 and myMethod2 for it: function MyClass() {} MyClass.prototype.myMethod1 = function() {...}; MyClass.prototype.myMethod2 = function() {...}; Inside myMethod1, I use jQuery and there's a callback closure defined there: MyClass.prototype.myMethod2 = function() { $.jQuery({success: function(data) { this.myMethod2(); }, ...}); } Now the problem is that this no longer is referring to MyClass. The question is how can I refer to it? At the moment I have assigned it to a variable named thisObj and access it this way: MyClass.prototype.myMethod2 = function() { var thisObj = this; $.jQuery({success: function(data) { thisObj.myMethod2(); }, ...}); } Is there a better way to access MyClass.this from the closure nested in myMethod2? Thanks in advance.

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• My application is in web with asp.net, I have Vehicle List information in DB. Whenever the vehicle i

  - by drop

  Please send any reference documents.

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• "Permission denied" with Internet Explorer and jQuery

  - by rallex

  I try to do an AJAX call with jQuery and $.post in Internet Explorer, but all I get is an error saying "Permission denied". The problem is kinda weird since it occurs only when I access a page after I was on any other page. For instance I type the URL in the adress line and let IE load the page. Then I click on a button so the script should start loading JSON data. (The script providing the data lies on the same server and I access it with a relative URL, so using a different domain is not the problem here. Even tried to use a absolute URL with the same host part.) But when I refresh the page then and try it again it works! Same thing when I come to that page from another page. At first nothing works, but when I click "refresh" everything is fine. IE gives me the error message "Permission denied" while in every other browser I don't notice this behaviour. Since I have tried many things and still cannot imagine where the problem lies I'd like to ask you what you think the problem might be?

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• Best way to find all input elements inside a form using jQuery

  - by Aayush

  I need to find all form elements inside inside a form and trigger a flag on change in the value. Currently I am using the method below. I am not sure if this works or not. But It surely works for: .find('input[type=text]) $('#form').find('input[type=text], input[type=radio], input[type=checkbox], select, textarea').each(function(){ $(this).change(function(){ if( change !== 1 ) change = 1; }); }) Now I have added multiple elements with the comma. Will this work and is this the best way to do this. Appreciate all the help. Thanks!

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• change div text on radion button click

  - by pisi

  I want to put the radio button value in the status div. The text of status div should change, according to the radio button selected by the user. The code that I used bellow is not working. Please help. Thanks! HTML code: <form action=""> <input type="radio" name="sex" value="male">Male<br> <input type="radio" name="sex" value="female">Female<br> <div id="status"></div> </form>? JS code: $(document).ready(function () { RadioStatus=""; $("input[type='radio']:checked").each( function() { if ($(this).attr('checked');) RadioStatus=$(this).val(); $("#status").text(RadioStatus); }); $("input[type='radio']").change(function() { RadioStatus= $('input[type='radio']:checked').val() $('#status').text(RadioStatus); }); });

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• Forced to use too many hidden fields; looking for an alternative approach

  - by harisri786

  I am looking for a better approach to do this. I have around 70 to 80 hidden fields in my page. This hidden fields are initialized at the server side and then used at the client side for validations, calculations, etc,. using java script. I wanted to know if there is any other alternative approach to using hidden fields in asp.net. I guess, these many hidden fields are increasing the page size and hence affecting the performance of my web page and I want to do away with it. FYI: I am working on an asp.net web application.

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• javacript question related to use of ' and "

  - by vatismarty

  my_window.document.write(' function redirect(linkid) { opener.location.href=linkid; window.close(); } Hello Thank you.If you accidentally closed our website click here to go back to our website '); This is my piece of code to close a already opened pop up window by redirecting it to google.com. I think there is some problem with matching the apostrophes ' and "... how to code with (' (" (' ') ") ')... is this correct... please help me with this.

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• problem with inserting HTML with insertHTML

  - by bah

  Hi, I'm trying to make wysiwyg editor with content editable divs and I'm inserting html with document.execCommand('insertHTML', false, html); but the problem is, when i insert link, and then i want to write after it continues to write INSIDE that link. EXAMPLE: how it does now: Hello, stackoverflow.com MyTextAfterLink how it should be: Hello, stackoverflow.com MyTextAfterLink How could i fix this? Thanks.

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• Why does the onclick function run on onclick, but not when I call it manually?

  - by Codemonkey

  This is my code // Register onclick var old_onclick = link.onclick; link.onclick = function() { astr_track_action(param); if(typeof(old_onclick) == "function") old_onclick(); } And this is the html <a onclick="alert('hello!');" href="http://www.google.com?acme=link&foo=bar">To google!</a> When I click the link, the alert pops up. But when I override the onclick with my JS code, the alert does not pop up. Any ideas? Edit: I just want to add, I have debugged and confirmed that old_onclick() is run, but no alert message shows up. Edit: Here is the full code from the loop start. I don't see how it's relevant, but it was requested: for(var i = 0; i < document.links.length; i++) { var link = document.links[i]; var eventlink = link.href.split("acme="); if(eventlink.length > 1) { var param = eventlink[1].split("&")[0]; var newlink = link.href; // Register onclick var old_onclick = link.onclick; link.onclick = function() { astr_track_action(param); if(typeof(old_onclick) == "function") old_onclick(); }

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• Using TweenMax to fade in div with background pattern and z-index not working

  - by shibbydoo

  I'm trying to do this really simple fade using TweenMax for this div I have. Here's the css for the div .aboutBg { background:url(../images/pattern.jpg); top:0; right:0; left:0; bottom:0, position:fixed; border:10px solid red; z-index:10; } TweenMax.to('.aboutPage', 0.5, {autoAlpha:1}); What's happening is the border would fade in nicely but the patterned bg is not, it just pops up at the end of the tween. If I remove the z-index everything works, but I have to have set the z-index so it's on top of my other content. Also I'm not tweening the z-index, it's set before the tween, so I'm not sure why it's not fading correctly. Anyone has any idea? Thanks.

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• Dynamic creation of a pointer function in c++

  - by Liberalkid

  I was working on my advanced calculus homework today and we're doing some iteration methods along the lines of newton's method to find solutions to things like x^2=2. It got me thinking that I could write a function that would take two function pointers, one to the function itself and one to the derivative and automate the process. This wouldn't be too challenging, then I started thinking could I have the user input a function and parse that input (yes I can do that). But can I then dynamically create a pointer to a one-variable function in c++. For instance if x^2+x, can I make a function double function(double x){ return x*x+x;} during run-time. Is this remotely feasible, or is it along the lines of self-modifying code?

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• Animating and moving a draggable shape in KineticJS's dragend event

  - by user3712941

  I would like to animate moving a draggable shape to another position after it has been dragged in KineticJS. I would like to animate the movement of the shape over a period of time (for example, over 1 second). For example, I create a draggable shape and save its initial xy coordinates. I register a "dragend" event on this shape. Then, I drag the shape to a new position. When I release the drag, the dragend event is called. In that event function, I want to animate/ease the shape back to its original position. See my JSFiddle for a complete example: DragSample. (function () { //create variables at global scope var layer; var stage; var triangle; var triangleLastX = 190; var triangleLastY = 120; var tween; function initTween() { tween = new Kinetic.Tween({ node: triangle, duration: 1, easing: Kinetic.Easings.EaseInOut, x: 400, y: 200, }); } this.init = function () { layer = new Kinetic.Layer(); stage = new Kinetic.Stage({ container: 'container', width: 800, height: 600 }); triangle = new Kinetic.RegularPolygon({ x: 190, y: 120, sides: 3, radius: 80, fill: '#00D2FF', stroke: 'black', strokeWidth: 4, draggable: true }); triangle.on('dragstart', function () { triangleLastX = triangle.attrs.x; triangleLastY = triangle.attrs.y; }); triangle.on('dragend', function () { tween.play(); stage.draw(); }); layer.add(triangle); stage.add(layer); initTween (); } window.onload = init(); })(); I have tried doing this several ways. The last way I attempted to do this was using Kinetic's Tween(), however, when I play this Tween from the dragend event handler function, it moves the shape back to its original position immediately (i.e. the position when the drag started), then applies the Tween. Is there any way to achieve animating the movement of a draggable shape to its original position (or any other position for that matter) in dragend using KineticJS?

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• PHP or JS to connect with fingerprint scanner save to database

  - by narong

  I have a project to set profile user and save all data to database include fingerprint also. i don't what i should start, I have USB finger scanner already to test. What i think: i should have a input box to read data from USB finger scanner than i should create a function to upload it database. but with this thinking i meet problem: i don't know data that get from USB finger scanner is image or data? if image, how i can read it to input box to save to database ? Anyone have any idea, please share me to resolve it. I am looking to see your helping soon! thanks

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• HTML and jQuery anchoring

  - by Wayne

  Whenever the url contains the div id, it would obviously go down to the div when the URL has: http://domain.com.faq.php#1 <div id="1">Bla bla bla</div> But what I like is to have same feature of Stackoverflow, when you click on an answer in your messages, it will scroll down to the page and has that fadeOut effect on the answer. How do I do this?

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• jquery animation - when do they finish?

  - by Naor

  I have two jquery animations one by other: books.animate({ left: left1 }, { duration: this.slideDuration, easing: this.easing, complete: complete }); laptops.animate({ left: left2 }, { duration: this.slideDuration, easing: this.easing, complete: complete }); I want the animations to run simultanusly so I use {queue: false}: books.animate({ left: left1 }, { duration: this.slideDuration, easing: this.easing, queue: false, complete: complete }); laptops.animate({ left: left2 }, { duration: this.slideDuration, easing: this.easing, queue: false, complete: complete }); But now the completed callback called twice! How can I know exactly when does the both animations are done?

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• How to use various selectors in SIFR 3r436

  - by reg3n

  Hi, i'm using this sIFR.replace(neutra, { selector: '#nav li', css:[ 'a { color: #ffffff; text-decoration:none; font-size:14px} a:hover { color: #d75a60; text-decoration:underline;}'], wmode: 'transparent', preventWrap: true ,forceWidth: true ,fitExactly: true ,forceSingleLine: true ,offsetTop: 0 ,offsetLeft: 0 ,tuneWidth: 0 ,tuneHeight: 0, }); and i need to style a b inside a span inside a div ... and i just can't find the way, if i add another sIFR.replace(blah... it won't work, it messes with the other replacement sometimes :S any good reference? thanks in advance.

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• What is the difference between document.location.href and document.location?

  - by Michel

  What is the difference between document.location.href and document.location? Is it the same across browsers?

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• Why does setting document.domain require me to set it in all popups and iframes too?

  - by Chris

  I'm using a long-polling iframe solution for a chat script. Unfortunately, this requires me to set document.domain='yourdomain.com' in the iframe and main document, because the iframe is a subdomain call. The huge problem is...now all my other scripts that use popups and iframes are broken. They now require me to put document.domain in them too. It does fix it, but this is not an ideal solution at all. Is there another way around this problem?

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• Why ajax doesn't work unless I refresh or use location.href?

  - by Connor Tang

  I am working on a html project, which will eventually package by Phonegap. So I am trying to encode the data from html form to JSON format, then use ajax send to a php file resides on server, and receive the response to do something else. Now I use <a href='login.html'> in my index.html to open the login page. In my login page, I have this <script> $(document).ready(function(e) { $('#loginform').submit(function(){ var jData = { "email": $('#emailLogin').val(), "password": $('#Password').val()}; $.ajax({ url: 'PHP/login.php', type:'POST', data: jData, dataType: 'json', async: false, error: function(xhr,status){ //reload(); location.href='index.html'; alert('Wrong email and password'); }, success: function(data){ if(data[1] == 1){ var Id_user = data[0]; location.href='loginSuccess.html'; } } }); }); }); </script> to send my data to server. But I found that it won't work, it's still in the login page. I tried to enter data and submit again, it's still nothing happen. Until I refresh the login page and enter data again, it can give an error message or go to the loginsuccess page. However, when I use <script> function loadLogin(){ location.href='login.html'; } </script> to open the login page, everything works well. So what cause this? How can I modify this piece of code to make it better?

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• Firefox DOMParser problem

  - by Michael

  For some reason DOMParser is adding some additional #text elements for each newline \n for this url http://rt.com/Root.rss ...as well as many other RSS I've tried. I checked cnn/bbc feeds, they don't have newlines and dom parser handling them nicely. So I have to add the following before parsing it var xmlText = htmlText.replace(/\n[ ]*/g, ""); var xmlDoc = parser.parseFromString(xmlText, "text/xml"); Server is returning text/xml. var channel = xmlDoc.documentElement.childNodes[0]; this returning \n without my code above and channel with correction.

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