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  • html5, adding an eventlistener to a drawn image on canvas

    - by pfunc
    I am experimenting with html5 and I have a little image dropdown, the user selects and image and it draws it to the canvas using drawImage(); I can't seem to figure out how to add an event listener to the newly drawn image on the canvas. I have tried putting it in a variable like so: var newImg = ctx.drawImage(myImage, 200, 200); and then adding an eventlistener to that, but it doesn't seem to work. newImg.addEventListener('mousedown', onImgClick, false); What is the correct way to do this.

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  • Can't append to second container

    - by George Katsanos
    I have the following script: (function($) { $.fn.easyPaginate = function(options){ var defaults = { step: 4, delay: 100, numeric: true, nextprev: true, controls: 'pagination', current: 'current' }; var options = $.extend(defaults, options); var step = options.step; var lower, upper; var children = $(this).children(); var count = children.length; var obj, next, prev; var page = 1; var timeout; var clicked = false; function show(){ clearTimeout(timeout); lower = ((page-1) * step); upper = lower+step; $(children).each(function(i){ var child = $(this); child.hide(); if(i>=lower && i<upper){ setTimeout(function(){ child.fadeIn('fast') }, ( i-( Math.floor(i/step) * step) )*options.delay ); } if(options.nextprev){ if(upper >= count) { next.addClass('stop'); } else { next.removeClass('stop'); }; if(lower >= 1) { prev.removeClass('stop'); } else { prev.addClass('stop'); }; }; }); $('li','#'+ options.controls).removeClass(options.current); $('li[data-index="'+page+'"]','#'+ options.controls).addClass(options.current); if(options.auto){ if(options.clickstop && clicked){}else{ timeout = setTimeout(auto,options.pause); }; }; }; function auto(){ if(upper <= count){ page++; show(); } else { page--; show(); } }; this.each(function(){ obj = this; if(count>step){ var pages = Math.floor(count/step); if((count/step) > pages) pages++; var ol = $('<ol id="'+ options.controls +'" class="pagin"></ol>').insertAfter(obj); if(options.nextprev){ prev = $('<li class="prev">prev</li>') .appendTo(ol) .bind('click', function() { //check to see if there are any more pages in the negative direction if (page > 1) { clicked = true; page--; show(); } }); } if(options.numeric){ for(var i=1;i<=pages;i++){ $('<li data-index="'+ i +'">'+ i +'</li>') .appendTo(ol) .click(function(){ clicked = true; page = $(this).attr('data-index'); show(); }); }; }; if(options.nextprev){ next = $('<li class="next">next</li>') .appendTo(ol) .bind('click', function() { //check to see if there are any pages in the positive direction if (page < (count / 4)) { clicked = true; page++; show(); } }); } show(); }; }); }; })(jQuery); jQuery(function($){ $('ul.news').easyPaginate({step:4}); }); which is a carousel-like plugin that produces this html structure for the navigation: <ol id="pagination" class="pagin"><li class="prev">prev</li><li data-index="1" class="">1</li><li data-index="2" class="">2</li><li data-index="3" class="current">3</li><li class="next stop">next</li></ol> And all I want is to enclose this list in a div. Seems simple, but appendTo doesn't want to cooperate with me, or I'm doing something wrong (I'd appreciate if you would help me understand what that is..) So I'm modifying as such: var ol = $('<ol id="'+ options.controls +'" class="pagin"></ol>'); var tiv = $('<div id="lala"></div>'); ol.appendTo('#lala'); tiv.insertAfter(obj); I know how to chain, but I'm in "debugging" mode trying to understand why I don't get the result I imagine I would get: <div id="lala> <ol id="pagination><li>...... </li></ol> </div> I tried putting some console.log's to see the status of my variables but couldn't find something useful.. I guess there's something with DOM insertion I don't get.

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  • Use variables to decide which object in an array gets an attribute?

    - by DavidR
    I have a web app which has two text areas. When one text area receives a mousedown event, a variable "side" is set, either "left" or "right." When a user selects some text in a text area, three strings are made. One for the text before the beginning of the selection, the selection itself, and the text after the selection to the end. A function is set to return these like this: return { head: head_text, tail: tail_text, sel: sel_text, side: text_side } Now, I have created an array, and I want it to appear in such a way that we get, text.left({"head":"four score", "selection":"and seven", "tail":"years ago."}) I am assuming I would do this by text.side = getSelection(), but how do I get it to evaluate the variable "side" instead of thinking of it as an object within "text"? EDIT: Ok, just to clarify, I might be completely wrong in my ideas in how this works, but here it goes. I want to make it so that a function can look at "text" see within text two objects, "left" and "right," and then evaluate the head, sel, and tail of each object. Would it be easier for me to use two objects?

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  • how to handle signout when the browser in close in flex 3?

    - by kumar1425
    my project had audit module ,which inlcude each and every action of the user to be recoreded so when the user closes the browser the audit regarding the logout has to be stored in the database i found one solution in the net ,but it is working in my machine's IE but falied to work in the friends machines IE why? the code is: window.onbeforeunload = clean_up; function clean_up() { var flex = document.${application} || window.${application}; flex.myFlexFunction(); } i place this code in the index.template.html file in the html-template foleder under flex src and i place the below code in my main application.mxml file ExternalInterface.addCallback("myFlexFunction",btnLogout); and i defined the logout funtion if any one has solution plz answer me............. thank you..................

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  • Google Maps API v3 show local businesses/points of interest

    - by julio
    I know at some point I'd come across a Google service built into their API that would provide local information as markers on the viewport (schools, hospitals, etc.)-- I believe this was a simple control that could be added just like the normal map controls, to allow users to turn it on or off with a checkbox or button. I can't seem to find this feature documented anywhere in the v3.0 API docs. Can anyone provide some information on this, or let me know if it was deprecated? Thanks

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  • How to change the pop-up position of the jQuery DatePicker control

    - by gfrizzle
    Any idea how to get the DatePicker to appear at the end of the associated text box instead of directly below it? What tends to happen is that the text box is towards the bottom of the page and the DatePicker shifts up to account for it and totally covers the text box. If the user wants to type the date instead of pick it, they can't. I'd rather have it appear just after the text box so it doesn't matter how it adjusts vertically. Any idea how to control the positioning? I didn't see any settings for the widget, and I haven't had any luck tweaking the CSS settings, but I could easily be missing something.

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  • How Do I Select a `td` Element in a Row That Has a Checkbox That is Checked?

    - by Russ Bradberry
    I have a table that looks somethings like this: <table> <tr class="row even"> <td><input type="checkbox" /></td> <td class="name">foo</td> <td class="metric">22</td> </tr> ...etc What I want to do is get an array of all td.metric only in rows that have the checkbox checked. This didn't work out as expected: var ticks = $.map($("tr td input:checked td.metric"), function(v,i){ return ... });

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  • jQuery Hide Div(s) on focus of drop down menu or text (live search) input

    - by webwrks
    Can anyone help me? I'm trying to hide the #hideme div when the a user clicks the drop down menu (to select something) or puts the focus on the text field. Thanks! #hideme { background:#ccc; } <script> $(function(){ $('#skill_select').click(function(){ $('#hideme').hide(); }); }): </script> <select> <option selected="selected">Pick from the list</option> <option>Option One</option> <option>Option Two</option> </select> or <input type="text" value="type something"> <br/><br/> <div id="hideme">Hide Me Please</div>

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  • how to do new lines? [ textarea -> jquery -> p tag ]

    - by Haroldo
    I'm doing something very similar to the stackoverflow question preview only much more basic. user types in text area - keyup shows what they've typed in preview new lines aren't working $('input, textarea').keyup(function(){ var value = $this.attr('value').replace('\n', '<br />').replace('\r', '<br />'); $('p.preview').html(value); })

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  • Trying to dynamically expand different divs with one function

    - by Matt Nathanson
    I'm trying to be able to dynamically expand / collapse multiple divs with the same code.... it's controlled with the click of a span (toggle) and then i'm trying to get the next id(the div that would slide up and down) $('span').toggle( function() { $('#albumholder').slideToggle(600); $(this).html('-');}, function() { $('#albumholder').slideToggle(600); $(this).html('+');} ); This code works to expand 1 div... but assume i have a divs #downloadholder#linksholderetc... How can i achieve the same effect with the same code? Thanks!

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  • Slide div content from left to right

    - by Inuka Rathnayake
    I'm beginner in to jquery and i wonder always how do developers do like this. Can someone give me a simple example..? http://static.livedemo00.template-help.com/wt_37928/#!/home What i need is there is a menubar and when you click a link from it that link's content should come to center of the screen by left and when you click another link that visible content should go to right and recently clicked link's content come to the screen as i mentioned. Can anyone help me out...? It will be a great relieve to me. Thank you.

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  • Moving .JS files to a CDN: How to manage AJAX requests?

    - by pagewil
    I am thinking of moving my static .JS files to a CDN such as Amazon S3 for performance reasons. As my PHP files and mySQL DB remain on my primary hosting domain what is the best way to manage my JS AJAX requests if they are now cross domain? Currently they look like this within my .JS file (with relative paths): $.ajax({ type: "POST", url: "/myNearbyPhpFile.php", data: {data:someData}, success: function($r){} });

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  • A script / class to edit doc/xls live on website

    - by Shishant
    Hello, I am using codeigniter and looking a way to enable directly editting of doc or xls files. Is there any free library or something to make it possible? Or something like google docs In google docs I think uploading files remotely from site is available only for paid and still not sure of editting too, never used google docs.

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  • jQuery: What does (function($) {})(jQuery); mean?

    - by Legend
    I am just starting out with writing jQuery plugins. I wrote three small plugins but I have been simply copying the line into all my plugins without actually knowing what it means. Can someone tell me a little more about these? What does this do? (I know it extends jQuery somehow but is there anything else interesting to know about this) (function($) { })(jQuery); What is the difference between the following two ways of writing a plugin: Type 1: (function($) { $.fn.jPluginName = { }, $.fn.jPluginName.defaults = { } })(jQuery); Type 2: (function($) { $.jPluginName = { } })(jQuery); I could be way off here and maybe both mean the same thing. In some cases, this doesn't seem to be working in a plugin that I was writing using Type 1. Any idea why? But in either case, I would appreciate any explanation.

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  • Dynamic added elements double effect after page transition

    - by Emil Moe
    I have added dynamic from jQuery in my code, but when I go back one page and return to the page where the 's are added and you press them, they somehow click twice now. I have tried with an alert('something'); when I click: $(document).on('click', '#products a', function() { alert('something'); } And it's shown twice when you return to the page. I have tried $('#products a').remove(); When you click the 'Back' button, because I thought all elements where added twice, but that made no difference. I don't have anything around these lines, maybe I need $(document).ready(); or something with pageinit?

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  • GridBoundColumn OnTextChanged event wiring

    - by Kobojunkie
    I have a GridBoundColumn in my RadGrid that should accept Zip input and based on input auto populates the State and City fields on my form. I would like to wire this up in such a way as to call a webservice on the back end or maybe repost the form only when the GridBoundColumn is changed. How do I wire this up please? Thanks in Advance

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  • Help with google maps api, user allowed marker map

    - by Exilekiller
    Without telling everyone too much about my new idea for a website, Pretty much I need help, maybe someone can help write it up, with a site that has a simple map that allows any user to double click the map and make a marker. When the marker comes up I just want Title and Description available for edit(only once, so others cant change it). I have been trying to figure this out myself but computer science isnt my major so its killing me. Thanks for the help

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  • how to get li width + margin using jquery

    - by From.ME.to.YOU
    hello my code is something like this //css li{display:inline-block} //html #li margin and width are dynamic <ul> <li style='margin:30px;width:100px;'>Pic</li> <li style='margin:40px;width:200px;'>Pic</li> <li style='margin:10px;width:500px;'>Pic</li> <li style='margin:50px;width:300px;'>Pic</li> </ul> how to make a jquery function that will take an li index as an input and it will return the width of all li from the beginning to that index + margins ' left + right ' Examples // something like this myFunction(1); //output 440 (( 30 margin-left [0] + 30 margin-right [0] + 40 margin-left [1] + 40 margin-right [1] + 100 width [0] + 200 width [1] )) myFunction(2); //output 960 (( 30 margin-left [0] + 30 margin-right [0] + 40 margin-left [1] + 40 margin-right [1] + 10 margin-left [2] + 10 margin-right [2] + 100 width [0] + 200 width [1] + 500 width [2] ))

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  • Manipulating/changing adressbar link Help

    - by Karem
    I am out of my own "ideas" going through this. I have a album viewer. When you click next I want the adressbar to hang with it, e.g if you start on ?photoid=1, and click next (next picture appends and stuff), and then i want it to say ?photoid=2. Now I cant make it say ?photoid=2 without changing/manipulating, and this you cant do without HTML5. I have made a script in HTML5 that works fine, but then I need to take care of those who dont have HTML5(only chrome, ff4 etc supports html5) Made the script from this( https://developer.mozilla.org/en/DOM/Manipulating_the_browser_history ) I thought of adding #photoid=2 so, ?photoid=1#photoid=2 and then check if theres anything in # then use that instead of the $_GET.. But apparently you cannot do that as # is client side handled and never sent to the server. So what should I then do? Any suggestions please to make a workaround this? I checked facebook, what they did to IE users, and I could hear that it "clicked" (the annoying click sound from IE) twice.. the first was to get to the next picture, the second click sound changed the adressbar?!(how?). And then I also thought hey, html5 is only supported in ff4, and I got ff3.6, and they manipulate the adress bar url when you browse through the album photos, exactly like how I wanted (and what I have written for but it only works in Chrome and ff4..?). How could they do that?

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