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  • Why navigator.appCodeName returning Mozilla?

    - by Venkats
    I am using the browser Firefox and IE. I have run the java script program. In that I was found both the browser code name is showed as: Mozilla. Why? The code is <script type="text/javascript"> document.write("Browser CodeName: " + navigator.appCodeName); </script>

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  • Javascipt select a sentence in textarea

    - by John Adawan
    I'm thinking if there is a way to use javascript to pick up ANY ONE sentence from a textarea simply by clicking any position within that sentence. I'm thinking along the line of - first, get current cursor position (which I know how) - second, somehow locate the position of the previous fullstop and the next fullstop (how?) - take whatever content within the two fullstops. (how?) Or there is a simple way to do it?

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  • How to show server errors in Rails 2.3.5 with JSON and jQuery

    - by Fortuity
    I've got in-place editing on a page in my app (using Rails 2.3.5 and jQuery). I want to know how to display an error on the page when the update fails. I'm using ajax (an XMLHttpRequest) to save an update to a Comment object. The controller has an update method like this: def update @comment = Comment.find(params[:id]) respond_to do |format| # if @comment.update_attributes!(params[:comment]) if false #deliberately forcing a fail here to see what happens format.json { render :nothing => true } else format.json { render :json => @comment.errors, :status => :unprocessable_entity } end end end In Firebug, I can see the server returns a "422" (an appropriate validation error status code). But it's a response to an XMLHttpRequest so there is no redirect to an error page. I think I actually want to do this: format.json { render :json => @comment.errors} or maybe this: format.json {render :json => { :status => :error, :message => "Could not be saved" }.to_json, :status => 400 } and trigger some Javascript function that iterates through (and displays) any errors. I'm using a rails plugin http://github.com/janv/rest_in_place/ to implement the in-place editing. It doesn't appear to have any callback function to handle a failure. What are my options? Can I write some Javascript to respond to a failure condition without hacking the plugin? Do I have to hack the rest_in_place plugin to handle a failure condition? Is there a better plugin (for Rails or jQuery) that handles in-place editing, including failure conditions? UPDATE This post from Peter Bui (http://paydrotalks.com/posts/45-standard-json-response-for-rails-and-jquery) was helpful in showing how to handle an error message from the server using XMLHttpRequest.status. I looked at his implementation of a blog using ajax (http://github.com/paydro/talks). I'm surprised at the complexity required to handle a simple error condition. Usually Rails has all the goodness baked in but it seems server errors with JSON are out of scope. Can that be? I also looked at grimen's validatious-on-rails (http://github.com/grimen/validatious-on-rails/) which accommodates models validations when ajax XMLHttpRequest is used. It's not clear to me how I'd use it to handle the general case of a "save" failing when validations succeed. P.S. Please vote me up... so I can use more than one HTML link when I ask my question :-)

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  • understanding json

    - by Yang
    JSON stands for JavaScript Object Notation. But how come languages like php, java, c etc can also communication each other with json. What I want to know is that, am i correct to say that json is not limited to js only, but served as a protocol for applications to communicate with each other over the network, which is the same purpose as XML?

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  • uploadify email notification

    - by kwek-kwek
    Is it possible for "Uploadify" to send out e-mail confirmation after the upload? here is the script: <script type="text/javascript"> $(document).ready(function() { $("#uploadify").uploadify({ 'uploader' : 'scripts/uploadify.swf', 'script' : 'scripts/uploadify.php', 'cancelImg' : 'cancel.png', 'folder' : 'uploads', 'auto' : true, 'multi' : true, 'onComplete' : function(event, queueID, fileObj, response, data) { $('#message').html( 'files were successfully uploaded'); $('#message').show().animate({'display':'block'},3000).hide(500); } }); }); </script>

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  • calculate number of working days on a rails form

    - by ash34
    I have two fields, 'from_date' and 'to_date' on my rails form. When a user enters the dates I have to display the number of working days i.e, exclude (sat, sun and a list of other official holidays in a database table). Is this something that should be done in the client side javascript Or is this something that should be done by making an ajax request to rails. Can you tell me how I can accomplish this. thanks much.

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  • convert a number to the shortest possible character string while retaining uniqueness

    - by alumb
    I have a list of digits, say "123456", and I need to map it to a string, any string. The only constraint on the map functions are: each list of digits must map to a unique character string (this means the string can be arbitrarily long) character string can only contain 0-9, a-z, A-Z What map function would produce the shortest strings? Solutions in JavaScript are preferred. note: Clearly the simplest solution is to use the original list of digits, so make sure you solution does better than that.

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  • CSS Semi-fixed Element?

    - by Kelso.b
    I remember seeing an example of this recently, but for the life of me I can't find the site. It was a button or something similar that sat in its place near the top of the screen, then when you scroll down it stays on screen. Now that I think about it, it must have been javascript-powered, but it looked really natural. Does anyone know of a site with this functionality or information on how to do it?

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  • Show google maps on mobile website

    - by GatesReign
    Is it possible to add google maps on a site designed specifically for the iPhone? I have never integrated maps in my websites before, so this question really goes more because of my inexperience. Using basic html and javascript at the moment.

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  • Rotate point in rectangle

    - by Dested
    I have a point in a rectangle that I need to rotate an arbitrary degree and find the x y of the point. How can I do this using javascript. Below the x,y would be something like 1,3 and after I pass 90 into the method it will return 3,1. |-------------| | * | | | | | |-------------| _____ | *| | | | | | | | | _____ |-------------| | | | | | *| |-------------| _____ | | | | | | | | |* | _____ Basically I am looking for the guts to this method function Rotate(pointX,pointY,rectWidth,rectHeight,angle){ /*magic*/ return {newX:x,newY:y}; }

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  • How does Appcelerator Titanium Mobile Work?

    - by Darrell Brogdon
    I'm working on building an iPhone app with Titanium Mobile 1.0 and I see that it compiles down to a native iPhone binary. How does this work? Seems like it would take a lot of heavy lifting to analyze the JavaScript code and do a direct translation into Objective-C without having a subset language like 280 North's Objective-J and Cappuccino.

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  • getElementByClass().setAttribute doesn't work

    - by Syom
    why when i write document.getElementByClass('home1').setAttribute('style', 'background-image:url(img/red_menu.PNG);'); it doesn't work? i have the element with class="home1" with document.getElementById('home1')... works fine thanks EDIT: and when i wrote document.getElementByClassName('home1').setAttribute, i have a javascript error Error: document.getElementsByClassName("home1").setAttribute is not a function

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  • Convert tags to html entities

    - by Sarfraz
    Hello, Is it possible to convert html tags to html entities using javascript/jquery using any way possible such as regex or some other way. If yes, then how? Example: <div> should be converted to &lt;div&gt;

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  • How do I open a new browser tab?

    - by Ionut Staicu
    Hi guys. I'm working on this project and I have to open a new browser tab. Actually, I have to open a target="_blank" link without the link. I know is not right to interfere with the user preferences, but hey, this is the project requirements. So, long story short, i have to replicate the target="_blank" behavior only with javascript. Is this even possible? Thanks!

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  • Javscript: creating div with absolute positioning

    - by citricsquid
    Hi, Just wondering if there's a way to position a div with absolute so that it ignores EVERYTHING else, if my site clears floats it seems divs that are created with javascript and absolute positioning are still effected by it, is there any way to make them ignore EVERYTHING else and go exactly where I set them, regardless?

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  • onClientClick event

    - by picnic4u
    when i used onClientClick event for calling a javascript function in .aspx file. but it's not working at all.how can i get alert for input of data within "<" in textbox. pls help me

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  • Embed Javafx in html

    - by Gabriel Martin
    Hi, I would like to simply ask if it is possible to embed a javafx application inside an html file. And if it is possible then I would like to know how to do this. I am open to using javascript etc. if it is required. Thanks.

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