Most voted "web-application" questions
In computing, web applications are generally computer systems designed for use from a browser, via the Internet, or applications developed using web technologies such as HTML, Javascript, and CSS. Can be run from an HTTP Web Host server or locally, on the user’s device.
Learn more…930 questions
Sort by count of
-
0
votes2
answers143
viewsInput event only happening when loading the page
Hello, folks at Stackoverflow. I try to make a textarea of a web page I am developing continuously check whether the typed text is the same or different from a predefined phrase, according to the…
-
0
votes0
answers73
viewsWhat are SMARTY variables in CMS?
Good evening, I would like to know what are variables Smarty, I did a search on the internet but it was not very clear... Maybe I just didn’t go in the right place. I hope you can help me. Search…
-
0
votes1
answer858
viewsSave variable after refresh php
I have a code that saves the POST from an html form in the $ID variable, in case when this POST occurs the page changes due to this variable, so I would like to save it somehow so that I didn’t lose…
-
0
votes0
answers558
viewsWebcam Photo Taking using java script
Folks does anyone know how I do to capture photos from web cam by a web application through some java script plugin and pass it to the server via POST? A e de preferencia que a foto fique em um…
-
0
votes0
answers91
viewsError with Curlfile
Hello, everybody. I have the following code: <form action="" method="POST" enctype="multipart/form-data"> <input type="file" name="image"> <input type="submit" value="POST">…
-
0
votes0
answers216
viewsBruteforce login lock in php
I have a system with captcha on my site to try to block this login, but it is very inconvenient because the user needs to do it every time they log in, so How to show catpcha after N login attempts?…
-
0
votes1
answer599
viewsJavascript function does not work after Else if
To contextualize: The code is a page with some RadioBox where each one must have a function and each show different HTML elements depending on the need (this worked perfectly). The problem is that…
-
0
votes0
answers968
viewsUnexpected token < in JSON at position 0 at JSON.parse(<Anonymous>)
I am trying to get the data searched in a given text field of the main page to be displayed without the refresh of the page, through AJAX. window.onload = function(){…
-
0
votes0
answers16
viewsAvoid changing the information in HTML
Hello, I am developing a web application that, on certain pages, has a table with information and I have an event (in jQuery) that is on the table lines that when clicked pass to a detail page. My…
-
0
votes3
answers1329
viewsSelect data with Between in Varchar format
I am redoing the question because I could not get the desired result, I would like to select in the field date but the between is not working, I believe it is due to my date field being in VARCHAR…
-
0
votes1
answer308
viewsSave array to different columns with fputcsv
I am trying to output some data from BD to csv with the following code: while($linha=$buscar->fetch(PDO::FETCH_ASSOC)){ fputcsv($out, $linha); } fclose( $out ); } which returns all the contents…
-
0
votes1
answer299
viewsProblem with treeview menu
Good morning I’m making a menu and I need the functionality of a treeview, but even done as documentation when clicking on the menu the desired links are not displayed(dropdown): Code: <ul…
javascript codeigniter web-application bootstrap treeviewasked 7 years, 4 months ago Felipe Miranda De Lima 195 -
0
votes1
answer100
viewsTransfer to "dd/MM/yy" format
I’ve been doing the exercise "6.4 Optional exercises: List of contacts with scriptlet" of Caelum and there is a question that says so : "2) Note that the date appeared in a complicated way to read.…
-
0
votes4
answers320
viewsHow to load a project in Laravel in an old version?
I have a project done in Laravel Framework 5.4 and recently Laravel made an update to 5.5, when passing my project to another computer, Laravel 5.5 was installed in this PC, now I can not work in…
-
0
votes1
answer531
viewsSending token via header or param
I’m using the JWTAuth to perform token creation for my API. I saw that at the time of the request I can send the token in the header or via param. I understand that by sending via header the token…
-
0
votes1
answer283
viewsView data in Array
I’m doing a query in a database and I need to display the information on the screen, but searching one at a time. I tried to do by array, but it is not displaying the vector. Code: <?php $a =…
-
0
votes0
answers757
viewsPrint via Browser to Non Tax Printer
I have a problem to print via web in some non tax printers, for example Bematech. I’m using pure html, I’ve added several css options and nothing works. In Epson I can print normal, all right, when…
-
0
votes1
answer304
viewsReal-time database replication
We have a client who needs to perform several queries in the database in a short period of time, something approaching 40,000 requests in less than 2 hours. I created a program that bridges the gap…
-
0
votes2
answers322
viewsConsume webservice of addresses queries of a given city
I am developing a web project to feed all the addresses of the streets and neighborhoods of the city where I live, and after performing a particular service by the user, link it to an address. Not…
-
0
votes1
answer547
viewsHow can I generate temporary URL to recover password in the play framework?
I am developing a web application using the play 1.4 framework (didactic version) and I want to implement the password recovery functionality where the user will place his email and will be sent a…
-
0
votes1
answer44
viewsError when relating two tables in the database
I’m with a web project in java, in which I’m mapping towers and patchpanels, where a tower has several patchs and a patch has only one tower attached to it. This relationship is all ok, now the…
-
0
votes3
answers872
viewsHow to create scroll link to target page
Hello, I would like to know how I can link to my video page that scrolls down, but this page does not contain any id to use in the mode: <a href="linkdapagina#localdesejado">. Is there another…
-
0
votes1
answer529
viewsencrypt files
I wonder if there’s any way to encrypt videos, images, etc.... not just text, with PHP, SQL, some language WEB, I am wanting to do something that keeps file security, that if the person is going to…
-
0
votes1
answer261
viewsEncrypting passwords in web application
I am developing a web application in play framework 1.4 and implemented the critptography of passwords using CRYPTO, but it is not encrypting and consequently decrypting, where I am wrong? In the…
-
0
votes2
answers510
viewsHow to select data from the previous month and year?
I’m trying to search from dates in Mysql. I need to obtain the total sum of a value where the year and month are smaller than those reported in the variable: SELECT SUM(valor_pag) FROM controle…
-
0
votes1
answer248
viewsCountdown
Good afternoon, I want to add on my page a countdown, which at the end only emits a warning saying that the time has expired. Is it possible to do this with html? I have no idea.
-
0
votes1
answer509
viewsWhat is the best way to scrape the Datasus website in Python?
The link is this: http://tabnet.datasus.gov.br/cgi/tabcgi.exe?sih/cnv/nrbr.def I’m trying to send a POST through requests with a dictionary containing the categories I want, but then the URL remains…
-
0
votes1
answer75
viewsReverse redirect 301
In the index.php file, I accidentally wrote the following code: <?php header("HTTP/1.1 301 Moved Permanently"); header("Location: http://www.habbo.com.br"); ?> The redirect was only supposed…
-
0
votes0
answers23
viewsWhy do some classes start with points and others don’t?
In CSS, when defining class H2, for example, it does not start with dot: H2 { color: red; } But other classes need the point: .text-red { color:red; } Why does this happen?…
-
0
votes1
answer40
viewsWeb service for web/android
I have the following web service $app->get('/alunos', function(){ require_once('db/config.php'); foreach ($db->alunos() ->order("nome") as $row){ $data[]=$row; } echo json_encode($data,…
-
0
votes1
answer2038
viewsHow to work with select and options at angular 2
have 2 fields select,precise q when I select a value automatically it select an array of options for the other Home Component eventAt:string='' @Output() selecionaEvento = new…
-
0
votes1
answer70
viewsGenerate table content through click action
I am with a web project that needs to implement functions to generate the content of a table according to the chosen item. For example on my Dashboard I have a tower icon, and below I have a table…
-
0
votes1
answer135
viewsHow to interact with database data with Javascript
I was looking to build a chart with HTML Canvas using Javascript as well. The required data is in the Mysql database. However, how can I interact and access this data from the Javascript database,…
-
0
votes1
answer490
viewsSpring Security Permissions
I am developing a system for my college TCC. I am creating the user authentication part. I wonder if someone has a simple example of Spring Security configuration of users who have more than one…
-
0
votes1
answer49
viewsGenerate values dynamically in a table
I am listing the number of equipment saved in my system in a table, only that they will not always have saved equipment, I can have an empty table, or incomplete. What I need is to list the lists of…
-
0
votes0
answers415
viewsHow to fill in several input fields with data coming from the database?
I have a little problem in my system, I have already registered several equipment in my system, but each equipment has a list of doors. How do I generate inputs dynamically according to the number…
-
0
votes1
answer72
viewsA function run infinitely in Servlet
I have a Servlet application that constantly receives POST requests, I do the data processing and processing normally in its due Java classes, however one of my applications it should not be rotated…
-
0
votes0
answers43
viewsSwap banner image via Central
Hello, I created a simple HTML page, with a banner, I would like to know how to create an administration area to change the image of this banner. Banner code: <div class="slider-style-1">…
-
0
votes0
answers64
viewsSession in PHP resetting?
I’m setting up a system and when the person logs in creates the sessions normally, example: $_Session['logado'] = 'S'; But when I redirect to the main page, the session is simply reset and empty,…
-
0
votes1
answer33
viewsHow to use items of various components in only one at angular4
I have a template that forms a registration form, it is separated into three "User, Note, Address" Components the three are being rendered, but I cannot access their content when submitting the…
-
0
votes2
answers1289
viewsWhat kind of measure used when building a site for width, height etc...?
What kind of measure is used when building a site, type width and height. If it is pixel, percentage, point, centimeter ?
-
0
votes1
answer493
viewsPlace auth folder in subfolder (Laravel)
I’m new in Laravel and in my project I want to put the auth view folder inside the admin folder, getting like this: C:\xampp\htdocs\projeto\resources\views\admin\auth\ However, I know I must still…
-
0
votes1
answer40
viewsIf there are spaces in folders or images, how is it resolved?
In case I am learning WEB(HTML,php,Css and Javascript), and for html there is the function of by images, but I came across the difficulty of sending an image if it has spaces in the name or in the…
-
0
votes1
answer898
viewsCreate a Java WEB application that also runs via desktop
Good night to you all. I’m thinking of developing an application with the following features: Backend: Java Frontend(Option 1): Javafx Frontend(Option 2): HTML5 + CSS3 I want to start the right way,…
-
0
votes0
answers260
viewsHow to login and register Facebook
Guys tomorrow I need to do a login screen and user registration,using the Facebook account,I need to get the data and send to webservice. Only I’m not getting it
-
0
votes1
answer46
viewsHow to automatically generate and redirect the link in the header
I am needing to generate a system where I have a template page (the fb profile for example) and that will be fed by my database with the information according to a user’s ID. My problem is: I do not…
-
0
votes0
answers93
viewsJquery Ajax - Problems when rendering graphics using jquery request
I am developing a web application that aims to generate monthly reports of some information coming from the mobile application. As I have little experience with Jquery I am having difficulty loading…
-
0
votes1
answer292
viewsHow do I install a library (Phpexcel) in a codeigniter application using NPM?
I am developing an application that needs to export data from an array that received the result of a query in Excel format, in a dynamic way, and I wanted to know how to import the library, I…
-
0
votes1
answer411
viewsDisplay user ID in PHP URL
Hello, I’m trying to make the user ID appear in the url when they log in. I made a function that receives the login and password of the user and returns the ID. However, when the user logs in, the…
-
0
votes1
answer47
viewsWebsite on VS Community 2017
I downloaded the new version of VS Community 2017 and was a little confused about starting a new website. I remember going to File > New Website (below New Project). Now no more. When I choose…