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  • Binded click loses context of my Class. JS

    - by Fabiano PS
    Hi, I have this problem that I probably understand but don't know how to handle, if there is a way. I have a class simplified as this: function DrawingTable(canvas_id){ this.canvas_id = canvas_id; bind_events() function bind_events(){ $(get_canvas()).click(function(e){ var canvas = get_canvas() //works do_something_in_the_instance_who_called_click() } function get_canvas(){return document.getElementById(canvas_id)} function do_something_in_the_instance_who_called_click(){ alert(this.canvas_id) //fail! } } Because when the click() is invoked for what it looks this is not inside the instance anymore, but I need to change atributes from there.. is there a way, given that may be multiple instances? I don't really know how but the get_canvas() works :) I'm using jQuery but likely not relevant

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  • format.js response doesn't execute

    - by Denis
    Hi, I use Rails 3.0.0 Beta following an action, my rjs view returns a javascript, but the code is not executed In firebug I see in my response $('polaroids').insert("<li>\n <a title=\"4204497503_a0c43c561d.jpg\" href=\"#\">\n <img alt=\"4204497503_a0c43c561d.jpg\" src=\"/system/photos/279/original/4204497503_a0c43c561d.jpg?1268857318\" />\n <\/a>\n<\/li>") Here is the response header Response Headers Etag "7343b21b2f062fb74b7d5f32e3a83c2c" Connection Keep-Alive Content-Type text/javascript; charset=utf-8 Date Wed, 17 Mar 2010 20:21:58 GMT Server WEBrick/1.3.1 (Ruby/1.8.7/2008-08-11) X-Runtime 0.060497 Content-Length 220 Cache-Control max-age=0, private, must-revalidate Set-Cookie _photos_session=BAh7ByIQX2NzcmZfdG9rZW4iMS9OWnpOZUR6UGQ2UDhvbGt5YWpTWXhJcFR2YjRHOEhzZHlIbmdMblRlMWs9Ig9zZXNzaW9uX2lkIiUxNjlhOWYzNjQxODE2N2NjN2FiNmYzY2VkYmU3OTgwYQ%3D%3D--022d7202178b2cc7bf968e558c2ae67ecef1fb74; path=/; HttpOnly

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  • jquery.ui.tabs.js doesn't load tab data in IE9, Chrome - works perfectly fine in firefox

    - by Salma Khan
    I have few issues that I am facing on my site and I have no idea how to fix those. Please go to http://link.zambeel.ca/index.php/component/obituary/detail/52 and click on Photos tab, it doesn't load images promptly in IE9 and Chrome. I have made it work in firefox with the following code: var loadNextTab = function() { if (indexesToLoad.length == 0) return; var index = indexesToLoad.shift(); $("#tabs-1").tabs("load",index); }; $("#tabs-1").tabs({ cache: true, load: loadNextTab }); Please help me resolve this matter as soon as possible. Just to let you guys know, I am not a programmer by any means.

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  • Problem with routes and mod-rewrite (if not absolute i don't get CSS, JS or images)

    - by Toni Michel Caubet
    hi there! i updated the code from my website to a 'better' veersion i think, it works fine but when i try to implement the friendly URL and load it, works, but with no CSS, Javascript or images, but if i corret the routes for the css to http://website/css/style.css (instead of ./css/style.css) it i do see the CSS properly loaded, any idea why? Example: http://keepyourlinks.com/link1.php?id=25 VS http://keepyourlinks.com/keep/25/series-yonkis (i updated the route of the CSS, but the Javascript is missing an the images asweell) I really would like not to have to correct al routes :(

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  • js loading page message not working on php file

    - by eggman20
    Merry Christmas guys, I found a code that displays a loading message using a gif. It uses the onLoad="init()" in the body tag. It works fine on an HTML file but it doesn't when the file is in PHP. Do I need to change anything in here or this just won't work in a PHP file? here's the code: <body onLoad="init()"> <div id="loading" style="position:absolute; width:100%; text-align:center; top:300px;"> <img src="loading.gif" border=0></div> <script> var ld=(document.all); var ns4=document.layers; var ns6=document.getElementById&&!document.all; var ie4=document.all; if (ns4) ld=document.loading; else if (ns6) ld=document.getElementById("loading").style; else if (ie4) ld=document.all.loading.style; function init() { if(ns4){ld.visibility="hidden";} else if (ns6||ie4) ld.display="none"; } </script> <!-- Content here --> </body> Thanks in advance!!!

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  • using respond_to format.js to replace the content of a textarea on rails

    - by Stacia
    I have some saved text in my create controller. If it's not stressful, I'd like it to populate a textarea on the page with the saved text along with displaying the error message fields (which is what's already happening). I've used things like replace_html before, but I don't know if there's an easy way to get to textarea or text field IDs and just replace the value of the text. For now I'm just going to do some javascript but it would be nice to know the rails shortcut. edit: I wasn't in the right mindset because this app uses extjs and was trying to figure out how to do it this way. The text box is actually an ext status bar (same as here : http://www.extjs.com/deploy/dev/examples/statusbar/statusbar-demo.html ) which doesn't get created until the page is finished loading. When I try to enter commnands like the first poster suggested, I get "setvalue is not a function". Playing with firebug on the page I can get it to set the value after loading by using (whatever method to get it through ext or scriptaculous).value = "lol" but none of the page update things work with this.

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  • Contour graphs in JS or PHP ?

    - by vince83000
    Hi everybody, For a web application, I have to make a scientific graph. You can see an example here : http://www.ego-network.org/monitoring/plot_deployment.php?glider=eudoxus&deployment=Cascade&posti=4&postj=scaptemperature_lastweek&pposti=4&ppostj=scaoxygen_lastweek&hchk=&defsct=default_scatter I have 2 coordinates, time and depth, and I want the temperature to be represent by a color, exactly like the example. Someone know how to make this king of graph ? Thanks !

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  • xmlhttprequest responsetext coming for Accept header: text/xml , but server error for application/JS

    - by encryptor
    I have to get response text from a resourceindex page as JSON object. When I dont put a Accept header in the request, it shows me the xml response (i see it in an alert).. But I want the response as a JSON object.. What should I do. One solution would have been httpRequest.setRequestHeader('Accept', 'application/JSON'); but this gives me a server error :500 Also it says A message body writer for Java type, class ...., and MIME media type, application/octet-stream, was not found Can someone suggest on what to do to overcome this and get the response as JSON?

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  • how can i check ID of a clicked element js

    - by necker
    how can i check if an ID of a clicked element is lets say 'target'. what i am trying to do is actually show and hide comment form on clicking in the text field and hide it when the user clicks out of the form. the problem is that if the user clicks Submit button the form hides and nothing is sent over. so i'll have to check if the submit buttons id matches the clicked element and not hide it in this case. i am using ruby on rails remote_form_for and onblur and onfocus events now. this is my bigger form that i am showing. <div id="bigArea" style="display:none"> <% remote_form_for @horses do |f|%> <%= f.text_area :description, {:onBlur=>"{$(bigArea').hide();$('smallField').show();}"} %> <%= f.submit "Submit"%> <% end %> </div> and this is the smaller form field that hides everytime you click in it. <div id="smallField"> <%= text_field_tag 'sth',"Click to comment, {:onFocus=>"$('bigArea').show();$('smallField').hide();"} %> </div> My question is how can i disallow the form to hide when a user clicks submit button? i suppose i should check which element's id has been clicked. and if it's submit button's ID i should not hide the form. Or maybe there is some other way to do all this? i would greatly appreciate any answers!

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  • how to send data to server with the same TCP connection using ajax or JS trick

    - by zack
    Hi, I know how to keep a connection indifinetely open server side to stream continuously data to javascript. BUT I do not know how to send data reusing the same TCP from browser to server. so there is not the 3 way handshake and only 2 tcp packets. I know it is possible but I do not how to do it : use xmlhttprequest? or script tag ajax ? can you tell me how to do it. thank you very much

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  • Websites that archive cross-browser css/js bugs?

    - by meder
    I'm about to develop my own browser inconsistency/bug compendium site but I'm wondering if I really need to - can we get a wiki of sites that do this already? I'm aware of a lot of them but I hope I'm not missing out on some major ones. I wanted mine to be more intuitive and social-like for most people, powered by tags and screenshots and test-case pages.

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  • Backbone: rendering syntax

    - by ksol
    We're using Backbone.js in one of my team's projects, and this is the first time I use it. I've seen many times this kind of code (it's coffeescript, but clear enough I think. @ means this.) clients_view = new Homespa.Views.Orders.Clients.SectionView(collection: @options.clients) @$("#clients-section").html(clients_view.render().el) clients_search_view = new Homespa.Views.Orders.Clients.SearchView @$("#clients_search_modal").html(clients_search_view.render().el) Isn't there a better way to do this? I would expect to just call render on my view, and then everything's good, I shouldn't have to get the html and append/replace it by hand. Thanks for you time !

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  • How to include js file in ajax call?

    - by Anubhaw
    Hi All, I am calling a ajax method to update a div. It contains links and functions which require java script files. But these methods and functions are not getting called properly as java script files are not getting included through ajax call. For example, i am trying to call a light box function, but it gets redirected to different page and not in light box. Thanks in advance, Anubhaw Prakash

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  • Measure CPU performance via JS

    - by Nicholas Kyriakides
    A webapp has as a central component a relatively heavy algorithm that handles geometric operations. There are 2 solutions to make the whole thing accessible from both high-end machines and relatively slower mobile devices. I will use RPC's if i detect that the user machine is ''slow'' or else if i detect that the user machine can handle it OK, then i provide to the webapp the script to handle it client side. Now what would be a reliable way to detect the speed of the user machine? I was thinking of providing a sample script as a test when the page loads and detect the time it took to execute that. Any ideas?

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  • How to protect and hidden form HTML/PHP with JS callback to AS3

    - by Jk_
    Hi guys, I'm developing a Flash website (as3) where I need to be able to upload directly to YouTube by using the DATA API. However in order to do so, I had to use a proper HTML form on top of my flash object. Why? Because of the Browser Based Upload restictions. I first hide the form using JQuery and with a little CSS the form is display just where I want it. Within flash I use ExternalInterface.call() to show/hide the form when I need it! ExternalInterface.call("YTUploader.showIt"); The upload process is working great my only problem is that the form can be displayed easily... You just need a tool like firebug and you can use the form wherever you want on my flash app. So I was wandering which will be the best way to 'protect' this form or the best way to limit its access. Any advices will be appreciated. Thanks for your time. Jk.

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  • Alligator tags(<% %>) inside js string?

    - by bangoker
    I am trying to redirect a page reading the url from the config file. However, when I try this: <script type="text/javascript"> <%string redirectUrl = System.Web.Configuration.WebConfigurationManager.AppSettings["RedirectURL"];%> window.parent.location.replace("<%=redirectUrl%>"); </script> the alligator tags <% % are Not being highlighted, and when I run I get the following error in the yellow screen: the controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>). What am I doing wrong?? Thanks!

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  • JS assignment order of properties in objects

    - by devdev
    Just had a quick question about why a certain order of assignment works and another doesn't. I wanted to create a simple "inherit" / "copy" function (just for testing it) that copies properties from one object to another: var cat = { tail:"yes", hairy:"yes, hairy" }; var dog = { sick:"extremely ill"}; function inherit(obj1, obj2) { for (var p in obj1) { obj2[p] = obj1[p]; // this works, but "obj1[p] = obj2[p];" doesn't. Why?? } } inherit(cat, dog); console.log(dog.tail);

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  • JS Framework that doesn't use CSS selectors?

    - by RoToRa
    A thing that I noticed about most JavaScript frameworks is that the most common way to find/access the DOM elements is to use CSS selectors. However this usually requires the framework to include a CSS selector parser, because they need to support selectors, that the browser natively doesn't, foremost the frameworks own proprietary extensions. I would think that these parsers are large and slow. Wouldn't it be more efficient to have something that doesn't require a parser, such a chained method calls? Some like: id("example").children().class("test").hasAttribute("href") instead of $("#example > .test[href]") Are there any frameworks around that do something like this? And how do they compare with jQuery and friends in regard to performance and size? EDIT: You can consider this a theoretical discussion topic. I don't plan to use anything other than jQuery in any practical projects in near furure. I was just wondering why there aren't any other, possibly better approaches.

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  • nodejs, mongodb - How do I operate on data from multiple queries?

    - by Ryan
    Hi all, I'm new to JS in general, but I am trying to query some data from MongoDB. Basically, my first query retrieves information for the session with the specified session id. The second query does a simple geospacial query for documents with a location near the specified location. I'm using the mongodb-native javascript driver. All of these query methods return their results in callbacks, so they're non-blocking. This is the root of my troubles. What I'm needing to do is retrieve the results of the second query, and create an Array of sessionIds of all the returned documents. Then I'm going to pass those to a function later. But, I can't generate this array and use it anywhere outside the callback. Does anyone have any idea how to properly do this? http://dpaste.org/wXiE/

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  • JavaScript: How to download JS asynchronously?

    - by Teddyk
    On my web site, I'm trying to accomplishes the fastest page load as possible. I've noticed that it appears my JavaScript are not loading asynchronously. Picture linked below. How my web site works is that it needs to load two external JavaScript files: Google Maps v3 JavaScript, and JQuery JavaScript Once it loads these external javascript files, it then, and only then, can dynamically render the page. The reason why my page can't load until both Google Maps and JQuery are loaded is that - my page, based on the geolocation (using Gmaps) of the user will then display the page based on where they are located (e.g. New York, San Francisco, etc). Meaning, two people in different cities viewing my site will see different frontpages. Question: How can I get my JavaScript files to download asynchronously so that my overall page load time is quicker?

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  • how to use alert in php and js combined

    - by user295189
    have a need to alert through php, I have the code below. Problem is that it works as long as I dont use header redirect. But as soon as I use it..I loose alert. echo "I will do some functions here in php"; if($value == 1){ alert('ok working'); } header(location: 'someOtherpagethanthis.php');

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  • the News Feed technique

    - by Rawhi
    I have been read a lot of articles to make a good design for my database so I can get the most recent updates for every single user by executing a - kind of - complex query then I send the data using ajax as a JSON to JS file that makes an appropriate edits for the records. It seems fast but I don't know if it will be as much as fast if the site has a large number of users . so iv'e started looking for an alternatives . and I found something called NodeJS , I really didn't understand what it is stand for and hope that you can help me with that. from another hand if the facebook doesn't use a normal db to do whatever he does , then I think there is no way to do it . helpful link : What's the best manner of implementing a social activity stream? waiting for your comments. best regards

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  • Problems using the Razor model when creating my knockout ViewModel

    - by Emil Kantis
    I'm having problems with using the Model in a javascript call when setting up my knockout VM.. @model List<AdminGui.Models.Domain> <script src="http://ajax.aspnetcdn.com/ajax/knockout/knockout-2.2.1.js" type="text/javascript"></script> <script type="text/javascript"> function ViewModel() { var self = this; self.domains = ko.observableArray( ko.utils.arrayMap(@Model, function(item) { return new Domain(item.guid, item.description, item.namespaces); })); } I get a syntax error on @Model in the ko.utils.arrayMap call. I suspect it might be my Razor-fu that is lacking... :)

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