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  • .click() callback references local variable from the calling method instead of copying by value

    - by Eric Freese
    The following jQuery Javascript code is included on an otherwise empty page. $(function() { for (var i = 0; i < 10; i++) { element = $('<div>' + i + '</div>'); element.click(function() { alert(i); }); $('body').append(element); } }); The desired behavior is that this code should generate 10 div elements numbered from 0 to 9. When you click on a div element, an alert popup will show the number of the div element you clicked on (i.e. if a user clicks on the div element labeled '4', the alert popup should show the number 4). The alert popup instead shows the number 10 regardless of which div element is clicked on. How can I modify this code to make it behave in the desired way?

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  • Ideas on limiting content to single printed page?

    - by James Skidmore
    I have 5-6 text areas that users fill out in a template (a couple of columns, basically a newsletter format). I'm needing to limit their content to one printed page, but I'm having a hard time coming up with practical solutions. The printed format (margin, font size, etc.) will be the same for all users, as it's printed from a central source. I've had a couple of ideas, but all of them seem rather unreliable and difficult to implement: Determine height of content using JavaScript and estimate the number of printed pages from that. The problem with this is that browser font sizes can vary, it's only a rough estimate (pixels to inches), etc. Limit the number of characters. This is problematic because there are various text fields, certain characters (like M) take up more space than others (like I), and line breaks obviously count for much more. What ideas do you all have? I appreciate your help!

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  • Refreshing <div> and load data from php

    - by forgatn
    I have on my page and there is a tag where is some and values filled from mySQL DB. I need some JavaScript I think. When I select one option, I want to display in this propriate DATAs which are in DB. without refreshing whole page. Can you tell me how to do it, if you know that please?:) <div id="country1" class="tabcontent"> <label>Choose protocol</label> <SELECT name="cisloprot"> <?php $con = mysql_connect("localhost", "root", "123456"); $sql = "SELECT kod FROM prot GROUP BY kod"; $rs = mysql_query($sql,$con); while ($r = mysql_fetch_array($rs)) { echo "<OPTION VALUE=".$r['kod'].">".$r['kod']."</OPTION>"; } ?> </SELECT> </div>

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  • Using Components.utils.import in a firefox extension

    - by jamesatha
    I am trying to create some global variables in a firefox extension. In my content folder, I have two javascript files: 1) Main JS file that holds the functions for the different events, etc 2) A file that stores only an object with the pieces of state I want to maintain. Also, I set the array EXPORTED_SYMBOLS. I am having issues with the following line found in my main JS file: Components.utils.import("resource:///globalVariables.js"); When it is at the top of the file, nothing seems to work. If I move it into the function where I need the variable, the rest of my code works, but the function with this line does nothing. Any advice that would help me with this problem would be great. Thanks

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  • Changing color of a row in dropdown list

    - by Judy
    is it possible to change "selector" color in drop-down list? <select name="select" style="background-color: #ff0000"> <option style="background-color: #ff0000" value="1">Red</option> <option style="background-color: #ffffff" value="2">Green</option> <option style="background-color: #0000ff" value="3">Blue</option> </select> I tried in above style but it didn't worked. I know with javascript getting document.getElementById('text').style.color='red' can set the color. But is it possible in html to set the colors?

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  • How might you unobtrusively enhance the jQuery Datepicker class?

    - by Teflon Ted
    You can pass special strings into jQuery's Datepicker class setDate() method like "+7" which will be translated into "7 days from today": http://docs.jquery.com/UI/Datepicker#method-setDate But you can't get that "+7" back out. When you call getDate() you get the calculated resulting date. I have a use case where I need to pull out the special string "+7" for propagation. One chunk of code is passing a special string into the Datepicker and passing the Datepicker over to another chunk of code which pulls out the date, but the latter sometimes needs to know the special string rather than the calculated date. So I need to enhance the Datepicker tool to (a) store the special code internally and (b) expose it via a method like getOriginallyPassedInDate() or some such. I'm not a jQuery/Javascript ninja so I could really use some guidance on how I might preferably-unobtrusively add the necessary functionality to the Datepicker class, the way you might monkey-patch an object in Ruby I'm guessing.

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  • how ca i make Description panel to pause after it is shown on the slideshow?

    - by ershad
    I am new to Javascript. I have a slide show with images fading and description coming from left to right. I need to pause the description panel for some sec. How can i do that? The code is: showhidedescpanel:function(state, animateduration){ var setting=this.setting var endpoint=(state=="show")? setting.dimensions[1]-setting.panelwidth : this.setting.dimensions[1]-410 setting.$descpanel.stop().animate({left:endpoint}, (2000), function(){ if (setting.descreveal=="always" && state=="hide") setting.$restorebutton.css({visibility:'visible'}) //show restore button }) }

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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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  • Build a Sitemap but webpages don't use links

    - by THX1138.6
    Folks I am trying to build a sitemap (we need one badly) for a huge multi-page web app. Technically its not much more than a collection of php/MySQL web forms that use javascript instead of traditional linkage to access the many pages. >td width="100" align="center" ONMOUSEOVER="this.className='bgover'" ONMOUSEOUT="this.className='bgout'" onclick="location.href='../main.php'">Main Page</td> Above is code sample of how the links are currently managed. I know I can search through the various pages, nearly a 1000, and find these "location.href" variables and that will help me a sitemap for each section. But maybe there is an easier way? WE use Trac and SVN so perhaps I am going about this the wrong way? Any advice would be appreciated.

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  • Loading jQuery with Tapestry 5

    - by American Yak
    Okay, so I'm not a Java guy, but I work with loads of them. We generally load Prototype with Tapestry 5, as Tapestry was built on this javascript library. As a UI/front end developer/engineer, I know the awesomeness of jQuery and the lack of prototype therein. (Feel free to debate that elsewhere -- this ticket doesn't concern that question, ha.) I've been curious for some time if it's possible to port jQuery into Tapestry instead of Prototype -- as in completely removing Prototype and Scriptaculous -- I realize it kind of defeats the purpose of the already bundled Prototype, but I wanted other opinions on the matter. Thanks.

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  • document.forms.gallery_form.submit is not a function

    - by Keene Maverick
    I swear, I have this exact thing working on another page. I'm such a javascript noob it's embarrassing... function delete_gallery() { var gallery = document.getElementById('gallery_id').value; var form = document.getElementById('gallery_form'); form.setAttribute('action', 'index.php?action=delete&section=galleries&id='+gallery); document.forms['gallery_form'].submit(); } Inspecting the element shows that it's updating the action correctly : <form method="post" action="index.php?action=delete&amp;section=galleries&amp;id=12" name="gallery_form" id="gallery_form"><input type="hidden" value="12" id="gallery_id" name="gallery_id"><p>Name: <input type="text" name="name" value="Woo"></p><p>Description:<br><textarea name="description">Dee</textarea><input type="hidden" value="2" name="artist"></p><p><input type="submit" value="Submit" name="submit"> </p></form> Here's the button I use to call the function, it's in a table below the form: <button onclick="delete_gallery()" type="button">Delete Gallery</button>

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  • Dynamic Dropdown menu through php

    - by Code_Ed_Student
    I visited a website a few weeks ago and came across a dynamic drop down menu. I came across a functionality that I am now trying to replicate but do not know how. In the dropdown you picked the desired number of cars and then it reiterated input fields according to the number of cars chosen. I believe this was done through javascript and a loop was involved. Is there a term for this action or way to display things? Also an example of how to accomplish something similar would help?

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  • ASP.NET: How to "reset" validation after calling Page_ClientValidate

    - by Josh Young
    I have an ASP.NET page with a jQuery dialog that is displayed to change some data. I am setting up the jQuery dialog so that when the user clicks the OK button it calls ASP.NET's Page_ClientValidate('validationGroup') via javascript, finds all the invalid controls and changes their CSS class. So here's the scenario: the user opens the dialog, keys in some invalid data, clicks OK (receiving the validation messages), and then clicks Cancel. Now the dialog is closed, but the validation messages are still there, so that when they open the dialog again, the data goes back to the way it was initially, but the form is still in the invalid state (the validation messages are still displaying). What I need is a "reset" function of sorts to call after calling Page_ClientValidate('validationGroup'). Does this exist?

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  • Resize and center image in html/css?

    - by Derek
    Is there a way I can resize, crop, and center an image using html/css only? (img tag or css sprite) For example if I have a 500x500 pixel image, I want to resize that to a 250x250 pixel image I want to make the actual visible image to be 100x100, but still have the scale of a 250x250 sized image. I want the center of the image to be at a location x,y. Is that possible with only html/css, if not, how do you propose I go about it with javascript? Edit - ????: For (2), say my scaled image is now 200x200, and I want my visible image to be 100x100: So I guess what I mean is I want the scale and resolution of the image to be 200x200 but I want the visible image to be 100x100 or in other words the visible image would be at coordinates x,y: 0,0; 0,100; 100,0; 100,100; of the 200x200 image. Sorry, but I'm not good at explaining this.

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  • Using nsIZipWriter or other to compress a string as a string?

    - by Daniel
    I need to be able to take a javascript string, compress it using any fast and available means and get back a binary string/blob. Background: The extension I'm developing needs to send various large content to my server. It does this conveniently by dynamically creating a form, adding fields to the form and posting it. Some of these fields are just too big bandwidth wise for multiple use. I'd like to be able to compress them before adding them and then maybe base64'ing them if the characters cause a problem in the message. Any ideas? I could use nsiZipWriter with temporary files on disk but that is quite ugly and probably sluggish.

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  • setting minDate in datepicker in Rails

    - by Sakshi Jain
    I need to apply minDate attribute to the datepicker in Rails App. In _admin_controls.html.erb <%= f.input :end_date, wrapper: :append do %> <div id="datepicker" class="datepicker input-group edit-left"> <%= f.text_field :end_date, :class => "datetime form-control" %> application.js contains jQuery(document).on('focus', 'input.datetime', function() { opts = {format: 'M dd, yyyy', autoclose: true}; jQuery(this).datepicker(opts); jQuery(".datepicker").css("z-index",10000); }); What should be the javascript to do so only for _admin_controls.html.erb?

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  • Bind event to shape on canvas

    - by Ben Shelock
    How can I bind an event to a shape drawn on a canvas? I presumed this would work but I get an error. <html> <head> <script type="application/javascript"> function draw() { var canvas = document.getElementById("canvas"); var ctx = canvas.getContext("2d"); ctx.fillStyle = "rgb(200,0,0)"; var rec = ctx.fillRect (0, 0, 55, 50); rec.onclick = function(){ alert('something'); } } </script> </head> <body onLoad="draw()"> <canvas id="canvas" width="300" height="300"></canvas> </body> </html>

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  • How to show a page after a specific time period?

    - by Mahfuz
    I want to build an online quiz test site. Suppose, exam will start at 10:00 am and a student login to give exam at 9:45 am. Whenever the student clicks 'Take Exam' button, he/she cannot not get access to the question paper because the exam time is 10:00 am and there are still 15 minutes before the exam start. Now I want to put some Javascript or PHP code that will prohibit the students to give exam earlier and if a students come early, it will show a stopwatch which display the remaining time before exam time and when the current time is equal to exam time then he/she will be directly redirected to the question paper page.

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  • ctrl-c does not copy text on a webpage

    - by aepheus
    I've come across this several times, ctrl-c randomly does not copy. I think it's caused by javascript or maybe some odd html syntax. I never spent the time to track down what caused it. Anyone know the typical/common causes of ctrl-c not working (to copy) on a website? Speaking from a developers standpoint. What do we developers end up doing to break ctrl-c? Just to clarify, I'm not interested in preventing copying. I'm trying to do the opposite, occasionally I find I've done something that is preventing ctrl-c from copying text, and that is not very user friendly on a text heavy site.

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  • How to calculate textarea cols with 100% width?

    - by sehwoo
    I set the width of a textarea to 100%, but now I need to know how many characters can fit in one row. I'm trying to write a javascript function to auto-grow/shrink a textarea. I'm trying to keep from using jquery since I just need this one function. My logic is to rows = textarea.value.split('\n'), iterate through rows and count += rows[i].length/textarea.cols, then count += rows.length, and finally textarea.rows = count. The only problem is that count is too large because textarea.cols is too small.

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  • How can I get rails to not render escaped quotes as \&quot;

    - by James
    In my layout I have <% @current_user.popups.each do |p| %> <% content_for :script do %> <%= "$(document).ready ( function() { $.jGrowl(\"#{p.message}\", { sticky: true }) });" %> <% end %> <% end %> And then in the script section I have <%= yield :script %> The problem is that this renders the escaped quotes as \&quot; and javascript doesn't like this. How can I stop this from happening? Or is there another approach to this? I can't use single quotes because I'd like to have some html in the message. I'd appreciate any help.

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  • display text when image on-click/hide text when different image click

    - by Jonah1289
    Hi I have created the following effects on the images seen here http://techavid.com/design/test3.html . You see when you hover and then click on each image, they go from grey to color. When you click on one - the others go grey and the one clicked remains color. That's cool, but now I need the text 1st: Sun for example to display and hide along with its graphic button. The word "Sun," is a link that needs to link out to a URL so it has to be separated from the image effect code. What jquery or javascript code do I need to do this? thanks, jonah p.s. How do i properly post the code I have now. I tried to paste code in "enter code here," but received errors - thnx

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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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  • Call load using a div id that has been passed into a function, div id is a parameter

    - by tittatty
    I am dynamically creating divs within a jquery accordion that are loaded with data as when the user clicks on the accordion title. I have this all working except that when I pass the div id into the load details method, the call to .load() does not work. What can I do to fix this? It seems like a simple javascript string eval would work but I can not find what I am looking for. Code: Here is the basic function: function loadDetails(div_id) { var load_string = "ajax/get_details.aspx"; $(div_id).load(load_string); } This function is called correctly on the click event and the div_id is passed in correctly but the load function is not working. If I use code like this it work correctly: $('#test').load(load_string);

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