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  • Cannot get document.getElementByID to work

    - by user1804234
    The following function doesn't work for some reason. Can someone see what the problem is? function checkMaxLen(txt, maxLen) { var actualLen = txt.value.length; var remain = maxLen - actualLen; document.getElementById('remainChar').Value = remain; } <input type="text" id="remainChar" runat="server" value="500"/> Whenever I try to run the function, I get this error: Microsoft JScript runtime error: Unable to set value of the property 'Value': object is null or undefined

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  • Is there a view for inputing integers in Android?

    - by J. Pablo Fernández
    I'm looking for something like the individual parts of the date picker dialog. A view that allows you to input integers (and only integers) that you can limit (between 1 and 10 for example), where you can use the keyboard or the arrows in the view itself. Does it exists? It is for a dialog. A ready-made dialog to request an integer would also help.

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  • Any tips for how to build a LED system thet will light up to music?

    - by daniels
    So basically I would like somehow that given an audio file as input (most likely mp3 or I can use some audio engine that will handle other types too) from my computer to control some LED lights so they will be something like an oscilloscope, like the one in winamp. What would I need to be able to do this? I'm interested in building thing up all by myself, coding, hardware, etc.. I'm going with C++ on Windows.

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  • simple interview question

    - by calvin
    Input integer array: a[8] = { a1, a2, a3, a4, b1, b2, b3, b4 } Output array: a[8] = { a1, b1, a2, b2, a3, b3, a4, b4 } Forget all corner cases, make sure your solution works for any int array of size 2n. You can use one or two temp variables for looping or anything, but you shouldn't use any temp arrays/stacks/queues etc to store entire array or part of array. I'm able to get answer in O(n*log n), but I'm looking for better solution.

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  • [java] run 2 threads simultaneously

    - by lamsaitat
    hi all, in the case of an IM client. i have made 2 separate threads to handle sending packets (by std io) and receiving packets. the question is how to make these 2 threads run simultaneously so that i can keep prompting for input while at the same time be ready to receive packets at any time? i have already tried setting a timer but the data is always lost receiving.

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  • Regular Expression: Match untill pattern is found

    - by ZafarYousafi
    Hi, I want to extract the status from the string untill I found a timespan. My input is something like "Something in start but not with this keyword of sure. STATUS: My Status Is Here Which can be anything but timespan 23:59:01 and so on. I want to extract the string after STATUS: untill 23:59:01 is found. How can i achieve this through regex. this 23:59:01 is a timespan and it is always in this format hh:mm:ss

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  • What happens if I give more inputs in estimateRigidTransform or getAffineTransform?

    - by user3531608
    I am using estimateRigidTransform with about two vectors of 100 points and is working FINE. But somehow getAffineTransform doesn't work. I know that findHomography finds the best matrix using RANSAC and getPerspectiveTransform needs only 4 points. My question is what happens if I give more inputs in estimateRigidTransform or getAffineTransform? Does it take only 4 points from input matrix? Or do some kind of RANSAC?

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  • [jQuery] How do I invoke custom plugin on click?

    - by Steven
    I have the following code: (function(jQuery){ jQuery.fn.timepicker = function(){ return this.each(function(){ jQuery(this).val("14:00"); }); }; })(jQuery); Currently I invoke this function by the following code: $("#event_start_time").timepicker(); Where #event_start_time is the ID of an <input> field. How can I invoke this code only when I click inside the text box?

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  • run multiple webservices at a time

    - by Prajakta
    Hello, I have written a webservice which is taking URL as an input and producing a JSON respone. My problem is that now I have list of 1000 URLs and want to execute maximum threads of Webapplications to get output. Like I want to execute 100 instances of webservice at a time to get response.Please can anybody give some guidance how can I do it using java. Thank you in advance

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  • upload 2 images at once in codeigniter

    - by sonill
    can anyone plz provide me a simple working code snippet of codeigniter for uploading 2 images at once (through 2 different input field ofcourse). I need 2 images to be uploaded at once, or one after another. and both of the images need to be in different location. I tried to make it myself by calling upload function twice but it returned last images with these extentions: *.jpg.jpg. can anyone help

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  • How to pass the parameter to the function

    - by avaro
    Hi, I have stored procedure that takes input parameter of table type. procedure test( name samptable type); My table has the structure like table: samptable( name chracter varying; address text[]; ) So how shoul i pass the values to the function to fill the table.

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  • An interesting issue about mysql_real_escpae_string

    - by phpExe
    I have simple form for editting site content: - a text input for title - a textarea for content When adding content, there is no problem, allthings add normally: $chead = mysql_real_escape_string(stripslashes($_POST['chead'])); $ctext = mysql_real_escape_string(stripslashes($_POST['ctext'])); But when edittig the article that containig the $chead = 'sdsfsf' "sdgsdgs"ggdsfsdg The $chead = 'sdsfsf' and the "sdgsdgs"ggdsfsdg will be lost!!! What is the problem with mysql_real_escpae_string? Thanks

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  • Javascript to change image form submit button src not working.

    - by james
    I'm trying to change the src of an image form submit button using an onclick, but it doesn't seem to be working correctly. Am I missing something? <input class="submit_image" id="my_form_button" onclick="$('my_form_button').src='/images/buttons/submitting.gif'" src="/images/buttons/submit.gif" type="image" /> I've also tried using the same JS on the form tag using onsubmit with no luck.

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  • what math do i need to convert this number

    - by Uberfuzzy
    given an X, what math is needed to find its Y, using this table? x->y 0->1 1->0 2->6 3->5 4->4 5->3 6->2 language agnostic problem and no, i dont/cant just store the array, and do the lookup. yes, the input will always be the finite set of 0 to 6. it wont be scaling later.

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  • Why closed contours are guaranteed here?

    - by user198729
    Quoted from here: BW = edge(I,'zerocross',thresh,h) specifies the zero-cross method, using the filter h. thresh is the sensitivity threshold; if the argument is empty ([]), edge chooses the sensitivity threshold automatically. If you specify a threshold of 0, the output image has closed contours, because it includes all the zero crossings in the input image. I don't understand it,can someone elaborate?

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  • .NET: How to place my window near the notification area (systray)?

    - by Vilx-
    I'd like to display a little popup window next to the notification area. It's similar to what Outlook/Skype/Live! Messenger/etc does when it displays the notification about a new message. In my case it will have some input controls (textbox, datetimepicker, buttons...) so a simple bubble won't do. The trick is doing this correctly when the user has multiple monitors and/or the taskbar is not located at the bottom of the screen.

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  • Struts formbean problem

    - by xain
    Hi, I have a struts app with a jsp with the code: ... ... <input name="inrofol" class="inputfilter" id="inrofol" size="22" maxlength="20" type="text"> ... And even though it's not linked to the associated form bean, I get the exception Error 500: No getter method for property: "inrofol" of bean: "com.test.forms.CompForm" Any hints ? Thanks

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  • Writing module to get video/audio from HDMI

    - by Martin
    I would like to write a small module that can check if anything is connected to my computer's HDMI input, and if so write a frame of video to bitmap once in a while. Can anyone point me to resources regarding grabbing audio/video from HDMI on windows?

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