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• how to create popup panel in mozilla firefox?

  - by user495688

  hello all.. i want to ask something about popup .. how to create popup panel in my addons to show text when users click context menu? the popup panel will execute javascript function inlinetrans.process() to show the result of inlinetrans process. this is my code to show context menu : <popup id="contentAreaContextMenu"> <menuseparator /> <menuitem id="inlinetransContextMenuPage" label="Terjemahkan dengan inlinetrans" image="chrome://inlinetrans/skin/imagesOn.png" class="menuitem-iconic" hidden="false" onclick="inlinetrans.process();"/> </popup> i want to create pop up like this http://abcdefu.wordpress.com/2008/07/25/writing-beautiful-ui-with-xul/ i don't need text box but i need to display my result of translation, what should i do? thank you for helping me..:)

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• What is the most efficient way to get the highest and the lowest values in a Array

  - by meo

  is there something like PHP: max() in javascript? lets say i have an array like this: [2, 3, 23, 2, 2345, 4, 86, 8, 231, 75] and i want to return the highest and the lowest value in this array. What is the fastest way to do that? i have tried: function madmax (arr) { var max = arr[0], min = arr[1] if (min > max) { max = arr[1] min = arr[0] } for (i=1;i<=arr.length;i++){ if( arr[i] > max ) { max = arr[i] }else if( arr[i] < min ) { min = arr[i] } } return max, min } madmax([123, 2, 345, 153, 5, 98, 456, 4323456, 1, 234, 19874, 238, 4]) Is there a simpler way retrieve the max and min value of a array?

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• Set form action dynamically in https-area

  - by Beerweasle

  Hi, heres the problem explanation: Im on the domain https://www.example.com - theres an Order-Form with the Action https://www.example-otherdomain.com with an other SSL Certificate. On some conditions i set the form action to https://www.example.com so that it will be posted on our domain, but if the user uses a CreditCart it should get posted to https://www.example-otherdomain.com. So far so good. But in some rare conditions, users with CreditCards still posts their form to https://www.example.com. So my idea is: Is there some Same-Domain-Policy for Javascript/HTTPS to protect the user from phishing? It seems that to set the FormAction to the same domain works, but not to reset it to the external one (with JS). I cant reproduce this error, so im asking here if someone knows if theres such a problem. It doesnt matter which UserAgent the user has (there are post datas from FF, Chrome, Webkit, IE7/8) Thx!

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• how to keep the value of a variable in a closure

  - by Florian Fida

  i need to create multiple javascript functions which have a static id inside, so the function itself knows what data to process. Here is some code: (function(){ function log(s){ if(console && console.log) console.log(s); else alert(s); } var i = 10; while (i--){ window.setTimeout(function(){ // i need i to be 10, 9, 8... here not -1 log(i); },500); } })(); The problem ist that i allways gets updated by the loop, and i need to prevent this. Thanks in advance for any help, comments or tips!

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• Is is possible to parse a web page from the client side for a large number of words and if so, how?

  - by Technoh

  I have a list of keywords, about 25,000 of them. I would like people who add a certain < script tag on their web page to have these keywords transformed into links. What would be the best way to go and achieve this? I have tried the simple javascript approach (an array with lots of elements and regexping/replacing each) and it obviously slows down the browser. I could always process the content server-side if there was a way, from the client, to send the page's content to a cross-domain server script (I'm partial to PHP but it could be anything) but I don't know of any way to do this. Any other working solution is also welcome.

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• clear input textbox value on load

  - by user544079

  I have the following form which is getting pre populated with values on load. I want to have empty input boxes on load using Javascript. However I do not have access to the <body> tag so <body onload="" will not work here. Is there any other way to clear the form fields on load? <form method="POST" action=""> <input name="username" id="user" value="" /><br /> <input name="pwd" id="pass" value="" /> <input type="submit" value="Go" /> </form>

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• Add linebreak with jQuery at end of each textarea row

  - by lpetren

  So I have been googleing around for a couple of days but I have not found a solution so far, so I'm turning to you guys with hope that there even is a possible solution for this. I need to, at the end of each line in a textarea add a linebreak before it is sent to PHP. That is, even if the user does not press enter but if a word get's cut of or it just jumps down a row because it has filled the with of the textarea. And I need to do so with jQuery or Javascript. Does anyone have any good ideas on how to do so? Thanks!

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• How to put focus on an element in jQuery?

  - by Prashant

  Hi, I have done the following code in JavaScript to put focus on the particular element (branch1 is a element), document.location.href="#branch1"; But as I am also using jQuery in my web app, so I want to do the above code in jQuery. I have tried but don't know why its not working, $("#branch1").focus(); The above jquery (focus()) code is not working for div, whereas If i am trying the same code with textbox, then its working, Please tell me, how can I put focus on a div elemnt using jQuery? Thanks!

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• JS Variable inside another variable

  - by Tusk

  I have a function that would use other variables, depending on what has been passed. Like this = ActionBar(slot) slot contains "one". and I would like to create a call inside that like object.slot.name but it should convert it before hand to make the command look like object.one.name. Is there a way to do this in javascript/jquery? I remember vaguely that some other language does this as {slot} or something like that. Sorry if this question was already asked, I've checked google and stackoverflow too, but didn't find an answer. Also I'd like to know what's the proper programming term for this kind of variable passing? Edited it cause of misunderstandings. I'm looking into OOP js, so object is an object, one is an object, and name is an attribute, but when passing I'm passing "one" as a string to the function. Tried eval, it doesn't work while dotted with an object.

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• Removing unused selectors in a CSS stylesheet?

  - by Legend

  I've been developing a web app for a few weeks now and ended up with about a 1000 lines. I am sure not all the selectors are being used and am trying to clean it up. At the same time, I don't want to do it manually for obvious reasons. Is there a safe and an efficient way to remove unused selectors? For this, am I supposed to navigate the entire website to let it know which selectors are not being used? (I use javascript to add some selectors so these might not show up until a particular usecase is seen)

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• typeof === "undefined" vs. != null

  - by Thor Thurn

  I often see JavaScript code which checks for undefined parameters etc. this way: if (typeof input !== "undefined") { // do stuff } This seems kind of wasteful, since it involves both a type lookup and a string comparison, not to mention its verbosity. It's needed because 'undefined' could be renamed, though. My question is: How is that code any better than this approach: if (input != null) { // do stuff } As far as I know, you can't redefine null, so it's not going to break unexpectedly. And, because of the type-coercion of the != operator, this checks for both undefined and null... which is often exactly what you want (e.g. for optional function parameters). Yet this form does not seem widespread, and it even causes JSLint to yell at you for using the evil != operator. Why is this considered bad style?

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• how do you get the response back into the instance of the object?

  - by randomdev

  If you've written a class in JavaScript that calls a remote service's API, and that remote API offers a callback, how do you get the response back into the instance of the object that made the request? I'll try to give you a very basic example FOO for making cross domain calls to BAR service which offers a callback. Please ignore the usual security concerns, (I own both servers). function FOO() { this.response = null; this.execute = function(url) { var script = document.createElement('script'); script.src = url; document.getElementsByTagName('head')[0].appendChild(script); } this.catch = function(response) { this.response = response; } } var sample = new FOO(); sample.execute('http://barservices.com/sample/?callback={ plshelphere: this.catch}'); I have a way to make this work, but I'm curious if there is an "accepted approach" here. Anyone have thoughts for me?

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• Do you draw the entire object?

  - by vbman11

  Hi I'm working on learning 3d game development and I'm starting with JavaScript and the html5 canvas and I was wondering if I were to have a 3d model do I draw the entire model(front, back, etc) and let the web browser decide what to render or should I try to just draw the sides that are in view of the camera? I ask this because I can see how it would be faster to do the latter of the 2 but that can get very complex and I'll need to do quite a bit more research to find how to do that. Thanks!!

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• js function causing all other functions not to work inside js file

  - by Camran

  In safari 4 and all explorer browsers, whenever I try to call a function inside a javascript file which contains this function below, that first function isn't called. So calling function1 will not work if function2 is inside the same .js file, explanation? Here is the code which makes the problem. Whenever I remove this function, everything works fine and all functions work fine. So this function is causing a problem. function addOption(selectbox, value, text, class, id_nr ) { var optn = document.createElement("OPTION"); optn.text = text; optn.value = value; optn.id = value; if (class==1){ optn.className = "nav_option_main"; } selectbox.options.add(optn); } Any ideas why? Thanks

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• Convert Lat/Longs to X/Y Co-ordinates

  - by michael

  I have the Lat/Long value of New York City, NY; 40.7560540,-73.9869510 and a flat image of the earth, 1000px × 446px. I would like to be able to convert, using Javascript, the Lat/Long to an X,Y coordinate where the point would reflect the location. So the X,Y coordinate form the Top-Left corner of the image would be; 289, 111 Things to note: don't worry about issues of what projection to use, make your own assumption or go with what you know might work X,Y can be form any corner of the image Bonus points for the same solution in PHP (but I really need the JS)

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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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• Using jQuery to auto-populate a form field from another form field

  - by Jon

  Has anyone used jquery to take data from one form field and put it into another? I'm trying to create a form that when one text input is filled out a second is auto-populated with the first letter of the word that is in the first text input. I'm thinking I can limit the second text input to one character to help get the desired result, but I'm not having luck getting jquery to get the second text input and auto-populate once the first is entered. Here is the code I'm using: <script type="text/javascript"> jQuery(document).ready(function($) { $('#textBox1').keyup(function(){ if($.trim($('#textBox2').val()) == '') $('#textBox2').val($(this).val().substring(0, 1); }); }); </script> Also, do I need to have any in the text input fields of the form other than matching "textBox1" id/names? Any suggestions?

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• A section of a program designed to swap the values of two variables [closed]

  - by gary

  Line 1.var numberOne; 2.var numberTwo; 3.numberOne = 9; 4.numberTwo = 1; 5.numberOne = numberTwo; 6.numberTwo = numberOne; For each of the lines in the program above, give the values held by numberOne and numberTwo at that point in the program. You do not need to write any JavaScript. Help me pls. Thank you.

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• How can I programmatically copy all of the style attributes from one DOM element to another

  - by stu

  I have a page with two frames, and I need to (via javascript) copy an element and all of its nested elements (it's a ul/li tree) and most importantly it's style from one frame to the other. I get all the content via assigning innerhtml, and I am able to position the new element in the second frame with dest.style.left and dest.style.top and it works. But I'm trying to get all the style information and nothing's happening. I'm using getComputedStyle to get the final style for each source element as I loop through each node then and assigning them to the same position in the destination nodelist and nothing happens to visually change the style. What am I missing?

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• jQuery: how to pick unique IDs ?

  - by Seerumi

  Hello. New to whole this jQuery (and javascript altogether, heh) and so far it's been excellent, but now I'm in a small pickle. Let's say I have list of forms generated from SQL database and every single one of them has to have unique id, so how I can select the specific item that is to be manipulated (changing values via php). the $("#submit").click(function()) will trigger every submit buttons on the page, so how I can the #submit to be some random id that I clicked. There might be a smarter way, but I'm new to this so try to bear with me. thought of passing the unique value with onClick="myfunction(unique_id)", but don't know how it goes with jQuery. hope this made any sense

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• Need advice with HTML table

  - by misha-moroshko

  I would like to code an HTML table with messages like this: The table will contain messages that will spread over first N columns (N may change). Lets call these N columns, the message area. Each message is located on X contiguous cells in the message area. X may also change. Each message has a name that contains words separated with underscores. How would you recommend to code this table in Javascript/jQuery such that: It would be easy to define a message (start cell, end cell, color, name) The name will break only after underscores (rather than in the middle of the word)

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• Open browser window with formed URL after posting a PHP form

  - by Gotjosh

  So here's the question. I have this php form that collects some data, after posting the data gets parsed an URL is constructed. After this URL is constructed, I'd like to open a new browser window for the user with this newly constructed URL. How can I actually accomplish this? Is this something that can only be done with javascript? If so... How? I already have the code in place and i've tested it works that construct the URL after posting the form, now it's just a matter of opening a new window with the URL.

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• need to run php script when form is submitted

  - by Brad

  I have a form that needs to run a php script once the submit button is clicked, it needs to be ajax. <form method="post" action="index.php" id="entryform" name="entryform"> <input type="submit" name="submit" value="Submit" onclick="JavaScript:xmlhttpPost('/web/ee_web/include/email-notification.php', 'entryform')" /> </form> In this situation, using if(form posted) { get results and run script } is not an option, I need to run the script externally, that is why I need it to execute the email-notification.php at onclick When I point my web browser to domain.com/include/email-notification.php - it runs perfectly. Any help is appreciated.

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• How does one validate html that's generated from JS running in the browser?

  - by Henry Rose

  The page in question has very skeletal html sent over the wire to facilitate the building of a complicated UI in javascript. I'm now encountering a strange browser compatibility issue that feels very much like I've got a markup problem somewhere on the page. I've validated the page as it comes across the wire using the W3C tool and ensured there are no issues in that html. I've also tried validating the output of running on the browser console: document.getElementsByTagName('html')[0].outerHTML I find that the output of the above introduces lots of new issues, such as removing the trailing '/' in self closing tags. This added noise is distracting, but it also makes me uneasy about validating this method. How do you validate markup that's rendered client side?

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• Avoid postback on gridview event

  - by purushottam

  1 I've got popup (using javascript) working in a kind of gridview. When you click a button on one grid, it displays a popup window containing another grid of information, based on the row clicked in the first grid. This works well... I've enabled editing in the grid that is popped up. When you click edit though, the popup window disappears. If I click the display button in the first grid though to bring the popup window visible again it displays, and is now in edit mode. Is there a way to make postbacks in the popup not close the popup?

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