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  • jQuery and Canvas.toDataURL

    - by Jeff
    I'm working on a script, and a small part of that involves taking a canvas and converting it to a downloadable image. To do this, I do: var thumb_jpeg = thumbnail.toDataURL("image/jpeg"); $("#" + options.dest).attr('src',thumb_jpeg); ...where thumbnail is a canvas tag and options.dest is the name of an img id. This code works perfectly in Chrome, but when I try it in Firefox, Firebug throws up this error: Security error" code: "1000 var thumb_jpeg = thumbnail.toDataURL("image/jpeg"); I would link to the whole script, but everything is hosted on my computer. Does anyone have any idea what this might mean? Thanks! Jeff

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  • FireFox Toolbar Prefwindow unload/acceptdialog Event to Update the toolbar

    - by Mark
    Hi all, I'm trying to develop a firefox toolbar ;) so my structure is In the options.xul is an PrefWindow which i'm opening over an <toolbarbutton oncommand="esbTb_OpenPreferences()"/> function esbTb_OpenPreferences() { window.openDialog("chrome://Toolbar/content/options.xul", "einstellungen", "chrome,titlebar,toolbar,centerscreen,modal", this);} so in my preferences i can set some checkboxes which indicates what links are presented in my toolbar. So when the preferences window is Closed or the "Ok" button is hitted I want to raise an event or an function which updates via DOM my toolbar. So this is the function which is called when the toolbar is loaded. It sets the links visibility of the toolbar. function esbTB_LoadMenue() { var MenuItemNews = document.getElementById("esbTb_rss_reader"); var MenuItemEservice = document.getElementById("esbTb_estv"); if (!(prefManager.getBoolPref("extensions.esbtoolbar.ShowNews"))) { MenuItemNews.style.display = 'none'; } if (!(prefManager.getBoolPref("extensions.esbtoolbar.ShowEservice"))) { MenuItemEservice.style.display = 'none'; } } So I tried some thinks like adding an eventlistener to the dialog which doesn't work... in the way I tried... And i also tried to hand over the window object from the root window( the toolbar) as an argument of the opendialog function changed the function to this. function esbTB_LoadMenue(RootWindow) { var MenuItemNews = RootWindow.getElementById("esbTb_rss_reader"); var MenuItemEservice = RootWindow.getElementById("esbTb_estv");} And then tried to Access the elements over the handover object, but this also not changed my toolbar at runtime. So what i'm trying to do is to change the visibile links in my toolbar during the runtime and I don't get it how I should do that... thanks in advance

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  • jquery, Regexp, make dynamic url

    - by Alexander Corotchi
    Hi , I need a regexp help, because for me it will take a lot of time , for you some minutes:) I have youtube a URL : http://www.youtube.com/watch?v=9_Hd8hXhg7o&feature=youtube_gdata I can't add this in embed object , for embed I have to change in this URL : http://www.youtube.com/v/9_Hd8hXhg7o&hl=en_US&fs=1& It means, that I want to add the youtube cod in some variable, something like this var url = after regexp "9_Hd8hXhg7o"; "http://www.youtube.com/v/" + url +"&hl=en_US&fs=1&"; thanks !

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  • In ExtJS, how do I place two fieldsets side-by-side in a panel with a hbox layout?

    - by Daniel T.
    In ExtJS, I'm having a little trouble placing two fieldsets side-by-side in a panel with a hbox layout. The hbox layout seems to be unaware of the fieldset's height, and cuts it off, even if I explicitly set the panel's height to something large. Here's what it looks like: The blue border is the hbox panel, and there's 2 fieldsets inside, 'Client Info' and 'Owner Info'. The code is like so (simplified and runnable in Firebug): var clientInfo = { xtype: 'fieldset', defaultType: 'textfield', title: 'Client Info', items: [ { fieldLabel: 'First Name' }, { fieldLabel: 'Last Name' }, { fieldLabel: 'Cell Phone #' }, { fieldLabel: 'Work Phone #' } ] }; var ownerInfo = { xtype: 'fieldset', defaultType: 'textfield', title: 'Owner Info', items: [ { fieldLabel: 'First Name' }, { fieldLabel: 'Last Name' }, { fieldLabel: 'Cell Phone #' }, { fieldLabel: 'Work Phone #' } ] }; new Ext.Panel({ layout: 'hbox', frame: true, height: 400, width: 800, defaults: { flex: 1 }, items: [ clientInfo, ownerInfo ] }).render(document.body); P.S. If you remove defaults: { flex: 1 }, the fieldsets render correctly, but doesn't automatically resize to fit the container, which is something I need. Does anybody know how to fix this rendering issue? Thanks.

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  • JQuery hover problem

    - by tim
    Hello, Im using jquery hover method to call a function as follows $(<some_element>).hover(function(){animate("next",true);},function(){}); But,the animate function is called only when the mouse enters the element. I want it to keep getting called as long as the mouse is over the element also. Any way to achieve this ? Thank You.

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  • How to select form input based on label inner HTML?

    - by Shane
    I have multiple forms that are dynamically created with different input names and id's. The only thing unique they will have is the inner HTML of the label. Is it possible to select the input via the label inner HTML with jQuery? Here is an example of one of my patient date of birth blocks, there are many and all unique except for innerHTML. <div class="iphorm-element-spacer iphorm-element-spacer-text iphorm_1_8-element-spacer"> <label for="iphorm_081a9e2e6b9c83d70496906bb4671904150cf4b43c0cb1_8">events=Object { mouseover=[1], mouseout=[1]}handle=function()data=Object { InFieldLabels={...}} Patient DOB <span class="iphorm-required">*</span> </label> <div class="iphorm-input-wrap iphorm-input-wrap-text iphorm_1_8-input-wrap"> <input id="iphorm_081a9e2e6b9c83d70496906bb4671904150cf4b43c0cb1_8" class="iphorm-element-text iphorm_1_8" type="text" value="" name="iphorm_1_8">events=Object { focus=[1], blur=[1], keydown=[1], more...}handle=function() </div> <div class="iphorm-errors-wrap iphorm-hidden"> </div> This is in a Wordpress Plugin and because we are building to allow employees to edit their sites (this is actually a Wordpress Network), we do not want to alter the plugin if possible. Note that the label "for" and the input "id" share the same dynamic key, so this might be a way to maybe get the id, but wanted to see if there is a shorter way of doing this.

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  • Biometric implementation in Java application and Image Comparision

    - by harigm
    How do I compare the 2 images in Java based web application. I have installed the Biometric thumb reader, I need to read the user Thumb and compare it with his thumb image which is captured during the registration process. Initially I am storing the image in the Mysql as Blob. Else I can store that image in a separate folder as well Please suggest which is best way to do 1)Shall i Use the Java script 2)Is there any built in Java API to perform this

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  • Google Chrome, IE problem with adjusting style before AJAX

    - by orokusaki
    When I'm using AJAX, I typically do something before each request to let the user know that they'll be waiting for a second. This is usually done by just adding an animated loading gif. When I do this, Firefox does what you'd expect and adds the gif before moving control to the next line (where the AJAX is called). In Chrome, it locks the browser and doesn't make any DOM changes at all (let alone load an image), including even changing the color of something, until the AJAX is done. This isn't just AJAX though. It's anything that holds control, and it never makes DOM changes until the control is given back to the window. Example (using jQuery): function submit_order() { $('#my_element').css('color', '#FF0000'); // Make text red before calling AJAX $.getJSON('/api/', my_callback) // Note, in IE and Chrome #my_element isn't turned red until the AJAX finishes and my_callback is run } Why does this happen, and how can I solve it? I can't use ASYNC because of the nature of the data (it would be a big mess). I experimented with using window.setTimeout(myajaxfunc, 150) after setting the style, to see if it would set the style, then do the timeout, but it appears it isn't an issue with just AJAX, but rather the control of the script in general (I think, hence the title making mention to AJAX because this is the only time I ever run into this problem). This doesn't have anything to do with it being in a function BTW.

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  • How would you organize a large complex web application (see basic example)?

    - by Anurag
    How do you usually organize complex web applications that are extremely rich on the client side. I have created a contrived example to indicate the kind of mess it's easy to get into if things are not managed well for big apps. Feel free to modify/extend this example as you wish - http://jsfiddle.net/NHyLC/1/ The example basically mirrors part of the comment posting on SO, and follows the following rules: Must have 15 characters minimum, after multiple spaces are trimmed out to one. If Add Comment is clicked, but the size is less than 15 after removing multiple spaces, then show a popup with the error. Indicate amount of characters remaining and summarize with color coding. Gray indicates a small comment, brown indicates a medium comment, orange a large comment, and red a comment overflow. One comment can only be submitted every 15 seconds. If comment is submitted too soon, show a popup with appropriate error message. A couple of issues I noticed with this example. This should ideally be a widget or some sort of packaged functionality. Things like a comment per 15 seconds, and minimum 15 character comment belong to some application wide policies rather than being embedded inside each widget. Too many hard-coded values. No code organization. Model, Views, Controllers are all bundled together. Not that MVC is the only approach for organizing rich client side web applications, but there is none in this example. How would you go about cleaning this up? Applying a little MVC/MVP along the way? Here's some of the relevant functions, but it will make more sense if you saw the entire code on jsfiddle: /** * Handle comment change. * Update character count. * Indicate progress */ function handleCommentUpdate(comment) { var status = $('.comment-status'); status.text(getStatusText(comment)); status.removeClass('mild spicy hot sizzling'); status.addClass(getStatusClass(comment)); } /** * Is the comment valid for submission */ function commentSubmittable(comment) { var notTooSoon = !isTooSoon(); var notEmpty = !isEmpty(comment); var hasEnoughCharacters = !isTooShort(comment); return notTooSoon && notEmpty && hasEnoughCharacters; } // submit comment $('.add-comment').click(function() { var comment = $('.comment-box').val(); // submit comment, fake ajax call if(commentSubmittable(comment)) { .. } // show a popup if comment is mostly spaces if(isTooShort(comment)) { if(comment.length < 15) { // blink status message } else { popup("Comment must be at least 15 characters in length."); } } // show a popup is comment submitted too soon else if(isTooSoon()) { popup("Only 1 comment allowed per 15 seconds."); } });

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  • what is the best way to stream a audio file to website users/listners

    - by Naveen Chamikara Gamage
    I'm developing a music site which will stream audio files stored in a server to users, audio files will be played through flash player placed in a webpage.. As I heard I need to use a streaming media server for streaming audio files ( like 2mb to 3mb in size).. Do I need to use one? I found some streaming media server softwares like http://www.icecast.org - but as in their documentation, It is used for streaming radio stations and live streaming purposes, but I just need to stream audio files faster and in low size (low bandwidth) with good quality.. I heard I need to encode the audio files first and then send them to listeners and in their end audio files need to be decoded again. Is that true? How can I do that? if I need to use a special web server, where should I host my files? Any good hosting providers? if I host audio files in a normal web server, they will use HTTP or TCP to deliver my audio files to users/ listners but I found that HTTP and TCP are not good ways to use for multi media purposes like streaming audio and video files, and they are used for delivering HTML and stuff. I found I should use RSTP or UDP for streaming audio files.. What should I use? I know that .MP3 files has much better quality than the other formats but it also gives huge size to the audio files.. which format should I use for audio files? Most of the best quality audio files are more than 7mb so I'm planning to convert them my self using a software so I could get low size files with some level of good quality. If I'm converting my audio files what is the good BITRATE I should use for my files? Any known best softwares for converting audio files while keeping quality in a good level? Note** - I know that I will not need complex requirements at the beginning of the site but I wanted to what are the best ways like they are using for soundcloud.com

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  • How to implement Cross Browser Opacity Gradient (Not Color Gradient)

    - by brz dot net
    How can I implement cross browser opacity gradient (not color gradient)? See following code: <div style="background-color:Red;display:block;height:500px;width:500px;filter:alpha(Opacity=100, FinishOpacity=0, Style=1, StartX=0, StartY=0, FinishX=0, FinishY=500)"></div> It works fine in IE but not in other browsers like firefox,safari..etc. What is equivalent syntax for firefox? Please don't suggest me to use gradient image.

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  • Is it possible to prevent just horizontal scrolling when overflow-x is hidden?

    - by Andrew LeClair
    I have a web page that has content which extends past the right edge of the browser window. I set overflow-x: hidden on <body> to turn off the bottom scrollbar, but I can still scroll horizontally with the trackpad, which is not what I want. Is there any way to prevent the browser from scrolling horizontally? As a side note: Safari 4.0.4 only scrolls horizontally sometimes, and the scrolling feels "sticky" and "jumpy," whereas Firefox always smoothly scrolls horizontally.

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  • uploadify changing scriptData

    - by kusanagi
    when i call uploadifySettings("scriptData", { 'description': description }); it mean that param description is set one time after click button upload, how can i set param description on each file that uploads ? for example i want to upload 10 files so i can change param description 10 times

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  • YUI: ensuring DOM elements and scripts are ready

    - by dound
    If I put my inline script after the DOM elements it interacts with, should I still use YUI 3's domready event? I haven't noticed any problems, and it seems like I can count on the browser loading the page sequentially. (I already use YUI().use('node', ... to make sure the YUI functions I need have been loaded since the YUI script is a separate file.) Is there a way to speed up the loading of widgets like YUI 2's calendar? I load the appropriate script in <head> element of my page. I use YUI().use('yui2-calendar', ... to make sure the Calendar widget is available. Unfortunately, this causes a short but noticeable delay when I load my page with the calendar. If I omit the YUI().use('yui2-calendar', ... code then it shows up without a noticeable delay - but I guess this could cause the Calendar to not show up at all if the YUI script doesn't load in time? With regards to #2, is it possible to reduce the visual artifact of the calendar not being present and then showing up? I've made it slightly better by specifying a height and width for the parent div so that at least the space is already allocated = minimal shifting around when it does load.

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  • Best jQuery rounded corners script?

    - by jonhobbs
    Hi, I've been looking at varios scripts for adding automatic rounded corners to a div using jQuery but there are loads of plugins available, none of which seem perfect. So, does anybody know of a script that is quick to render, supports IE6, anti-aliases and supports opacity? Any help would really be appreciated, Jon.

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  • A problem of trying to implement scrolling inertia with jQuery

    - by gargantaun
    I'm trying to add some iPhone style scrolling inertia to a web page that will only be viewed on the iPad. I have the scrolling working in one direction (scrollLeft), but it doesn't work in the other direction. It's a pretty simple function function onTouchEnd(event){ event.preventDefault(); inertia = (oldMoveX - touchMoveX); // Inertia Stuff if( Math.abs(inertia) > 10 ){ $("#feedback").html(inertia); $("#container").animate({ 'scrollLeft': $("#container").scrollLeft() + (inertia * 10) }, inertia * 20); }else{ $("#feedback").html("No Inertia"); } } I've bound it to the 'touchend' event on the body. The intertia is the difference betweent he old moveX position and the latest moveX position when a touch ends. I then try to animate the scrollLeft property of a div that contains a bunch of thumbnails. As I've said, this works when scrolling to the left, but not when scrolling to the right. You can view the full source code (all in one page) or test it on your iPhone or iPad (or in the simulator) here http://www.appliedworks.co.uk/files/times/swipegal.html Any ideas?

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  • a simple regexp

    - by Delirium tremens
    The regexp has to remove ,id or id, in read and unread. GM_setValue('unreadids', (unreadids == '') ? '' : unreadids.replace(new RegExp('('+id+',)|(,'+id+')', 'i'), '')); GM_setValue('readids', (readids == '') ? '' : readids.replace(new RegExp('('+id+',)|(,'+id+')', 'i'), '')); It works in Rx Toolkit, not in real life. Why?

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  • Positioning SVG Elements

    - by Rob Wilkerson
    In the course of toying with SVG for the first time (using the Raphael library), I've run into a problem positioning dynamic elements on the canvas in such a way that they're completely contained within the canvas. What I'm trying to do is randomly position n words/short phrases. Since the text is variable, its position needs to be variable as well so what I'm doing is: Initially creating the text at point 0,0 with no opacity. Checking the width of the drawn text element using text.getBBox().width. Setting a new x coordinate as Math.random() * (canvas_width - ( text_width/2 ) - pad). Altering the x coordinate of the text to the newly set value (text.attr( 'x', x ) ). Setting the opacity attribute of the text to 1. I'll be the first to admit that my math acumen is limited, but this seems pretty straightforward. Somehow, I still end up with text running off beyond the right edge of my canvas. For simplicity above, I removed the bit that also sets a minimum x value by adding it to the Math.random() result. It is there, though, and I see the same problem on the leading edge of the canvas. My understanding (such as it is), is that the Math.random() bits would generate a number between 0 and 1 which could then be multiplied by some number (in my case, the canvas width - half of the text width - some arbitrary padding) to get the outer bound. I'm dividing the width of the text in half because its position on the grid is set at its center. I hope I've just been staring at this for too long, but is my math that rusty or am I misunderstanding something about the behavior of Math.random(), SVG, text or anything else that's under the hood of this solution?

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  • WebSocket for HTML5

    - by Sareuon
    Introduction: I am going to develop the instance messaging that is run on the browser. Problem: Unfortunately I can not find and no idea what are the browser that is support with web-socket. Question: What are the browser that support web-socket?

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  • How to know when a download has finished?

    - by Eric
    Hello, Is there a way to tell if when a download has finished? That is, we allow users to download a report in PDF format. It takes about 3 - 5 seconds to start downloading and in this time, from click to end of download, show a wait state icon so that the user doesn't click multiple times. Thanks! Eric

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  • Using Prettify on dynamically-generated code

    - by Nimbuz
    I'm using Prettify for syntax highlighting, but it doesn't work on dynamically generated code. I have a form that when submitted generates code and displays it (without refreshing) in <div id="output></div>, but prettify doesn't work on this code, is there any workaround? Many thanks!

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