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.
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answer205
viewsError with facebook login in php
I’m having trouble connecting to Facebook using sdk php.: configuration on facebook Developers: code snippet: loginfacebook.php You can help me? Note: I’m still in development, so I use the same…
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answer527
viewsHow to capture camera image from your phone and send it to the server via Rest using Volley?
I’m developing an application MOBILE that communicates with my web application, the application developed in Android Studio and the web on Playframework. I created a form on APK that already makes…
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answer55
viewsThere is performance difference using ngIf directly on a component
Hello, Could someone tell me if there is a difference in performance in the code snippets below, and if there is, what would be the most performative? Thank you!! <div *ngIf="false">…
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answer80
viewsRun function in android app when a button on a web page is pressed
I have an app (developed in android studio) that gets data from the accelerometer. Now I need to make a web page with a button, when the button of the web page is clicked, the data of the…
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answer108
viewsIs there any way to hide Ajax in a web application?
Is there any way to hide AJAX in a web application? To what extent is AJAX safe? Because analyzing the code you can know the address of the server, the file, the function, and even the response of…
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answer110
viewsHow can Maven’s archetype webapp work without web.xml?
I tried creating an app Maven archetype webapp in Eclipse JEE Photon: File > New > Maven Project > Next > maven-archetype-webapp 1.0 It generates the following file structure: . |-- src…
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answers445
viewsConnect Firebird via PHP
I have a BD in Firebird on a server other than the web server (PHP). I’m trying to make the connection between them, using the ibase_connect function, but nothing happens, my line in php is:…
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answer389
viewsGeometric shape with css
I have researched on the subject, but I don’t know much about css and I’m having doubts about how to make this way. One of the ways I found it was this way HTML and CSS .coracao { position:…
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answer1037
viewsLoad HTML file into another HTML file
I have a file index.html: <body> <div class="application"> <header class="header"></header> <main class="content"></main> <footer…
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answer104
viewsHow to use Promises with button in Javascript?
Hello, I’m a beginner in Javascript and I wanted to create a code where we write something in the input and when clicking a button we would call a Promise. It would try to make a request on the site…
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answer579
viewsCalling child method in parent component within a v-dialog
Hi, I’m trying to call a method that’s in the child component through the parent component. The HOWEVER is that if I involve the child component specifically in a 'v-dialog' the code does not work,…
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answer271
viewsJDK 1.8 Genexus X Ev. 2
I wonder if the Genexus X Ev.2 or higher already allows compiling programs generated in Java with JDK 1.8. I have to do something different?
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answers603
viewsMultithread in web application
I have an app that does some server processing and then delivers it to the client. Something like: http://aplicacao:8080/app/videos/extrair/{id}. Where the "id" is the item reference for processing.…
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answers637
viewsHow to insert values from a Select field into the database
I’m a beginner in Ruby on Rails and need to add a Select field to the user registration form, so I can add a "Type" for the user to be registered. I intend to populate the fields automatically while…
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answer431
viewsInsert web api class into existing web project
In my visual studio 2012, I have a solution with several projects and one of them is web. In this project, I would like to include a "Web Api Controller" class to do some tests. I created a class…
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answers1885
viewsWebsite images do not appear on iphone or iOS tablet
On the website: http://viladivanomoveis.com.br/? page=products&prod=Armchairs images do not appear when accessing from iphones or ipads, I suspect it is because of this php code that resizes the…
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answer178
viewsAlternative Methods for Application Server Storage
Good Afternoon Staff, I would like some suggestions for alternative ways of accessing data on an application server, more specifically a Jboss 6. It happened that I have an application hosted in a…
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answers260
viewsHow do programs store saved passwords?
On the internet it is common to have the "remember password" in the login fields. I know this is done by the developers of the application, but how google Chrome, for example, stores a saved…
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answer103
viewsError using $http Angularjs
I’m trying to call the $http method from Angularjs to get information from a REST Webservice, but the following error appears: Error: [$injector:modulerr]…
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answers45
viewsProblem with json
Why am I unable to recover this json from the web service of the api I am using. var url = "https://api.roomorama.com/v1.0/rooms.json?access_token=RS97GGOxoeuo66dXwF4UcHhjmgKjUnAjDiBVDAVTo";…
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answers166
viewsInsert the last table data into a second table
I have a problem to give INSERT in PHP. I have a table called products_1 and another one called products_2. Table 1 has the same products as the second one, but with 5 more products, i.e., ID 11,…
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answer72
viewsJavacv applet does not display video in the browser, only on the desktop
I am developing a web application that connects to a security camera via Javacv. The applet I developed runs normally on the desktop, but when I try to run in the browser, although it does not give…
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answer138
viewsDeploy queues to manage competition between Piders in Scrapyd
Is there any way that Scrapyd can create Piders queues so that when I send many Piders (with different functions) I can privilege/limit the competition between them? Today, all the Spiders I send…
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answers113
viewsHow to protect my Scrapyd server from unauthorized calls?
Let’s say I have the following configuration in scrapy.cfg in Scrapyd. [deploy] url = http://example.com/api/scrapyd/ username = user password = secret project = projectX In the Scrapyd…
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answers76
viewsSpecific sorting of a list without plugin
I’m facing a very specific problem in a project. I am creating slide, where I need to sort the list according to what is clicked in the pagination. It should look like this: Following form: Quando…
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answer2300
viewsSend message from a web java application to Whatsapp
Guys, I wonder if there is the possibility to send message from java web application to the Whatsapp application. Is there a class or api that can help? Example: the person makes a purchase and when…
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answers1352
viewsWampserver 2.5 Offline
I have a problem with Wampserver 2.5 (Windows 8.1). There was a need for me to change a configuration in apache (httpd.conf), to allow and accept rewrite module. After the line changes: #LoadModule…
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answers376
viewsProblems with Javascript, urllib and Beautifulsoup
The idea of my code is to catch the link of the video and run directly on the VLC, but I came to a problem: apparently the urllib does not execute Javascript code, since player is placed on the page…
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answer503
viewsWhich language performs best for the multithread webcrawler using parallelism
I will start a project in which one of the phases will fetch certain information on websites of other companies. Bearing in mind that the webcrawler will go through x sites, and on each site will…
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answer166
viewsJavascript style buttons
I am trying to make on a page, that buttons that are clicked change their style and also start to display a div when they are clicked. Only that they should be mutually exclusive, that is, when I…
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answers765
viewsAccess websites and extract contents to excel via VBA
Hello, I’m wanting to learn how to move around websites and extract images values, or insert passwords and logins via VBA, however I do not know any of this. I would like to know if it is necessary…
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answer1065
viewsCanvas Search Field (ASP.Net - MVC)
Good afternoon, I wonder if someone could help me. I’m a beginner in programming, and I’m developing a Web system, and I need a screen search of the screens you’ve already created. As I use the MVC…
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answers1234
viewsCalculate hours in PHP?
I am developing an electronic point in PHP and I would like to know how to do the Caculo of two hours being that one of them is negative, for example: Workload day 1: -05:00:00 Workload day 2:…
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answers810
viewsHow to display attributes of an object passed in a list in a JSP page
I am working on a Java Web project, using the Spring MVC framework. I’m having difficulty displaying information that comes from a list where analysts are registered. The name of the analyst is…
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answer727
viewsShow PDF on the page via Servlet
Hello, I am developing a web application using Servlets and Jsps. I still don’t have much experience with it. My page contains a button that downloads a BD file and a <object> HTML to display…
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answer282
viewsAsp classico with Asp . net
I have an Asp net project and I would like to take advantage of a page of another project, however it is classic Sp, I did some research and saw that I could do this "merge", but no one said exactly…
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answer130
viewsWould Bigpipe be applicable in this case?
I was reading about how big web-sites work and I got to know Bigpipe. What is Bigpipe (kids) Bigpipe was a feature created by facebook, what it does is make page loading time faster, page content is…
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answer68
viewsView different HTML in Web App
I have a responsive site, but I need it to be displayed differently within a webapp iframe (no navigation menu, no footer, for example). How do I load a different css, or hide elements, if the…
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answer47
viewsDoubt about hierarchical relationships between classes and slots
I’m trying to make a ontology of a hospital and I have the classes: Physiotherapist, Physician, Psychologist and Nutritionist Within the class Médico, I have some specialties - among them: Oncology…
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answers37
viewsHow to run a method daily automatically
How can I create an automatic routine in my application to run a particular method every day at 08:00 am in the morning, with the aim of updating a field in a table of my database?
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answer125
viewsHow do I validate a value without leaving the page?
I’m developing a system with the discount part, so I wanted the user to enter the discount and after he finished validating whether or not and show the discount percentage. $cupom =…
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answer71
viewsCheck the compatibility of my app with browsers
Generally speaking, how can I check the compatibility of my web application with the most used browsers (and their versions) so that there is no problem with the functionalities?
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answers877
viewsCreate login page for Hotel to access the WIFI
The hotels usually share WIFI, but it is necessary to enter an authentication page, I needed to do the same but I have a question, that page is allocated in the Router? Thank you
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answers2215
viewsNodejs NPM does not work
Guys, I installed Node normally and added it to the environment variable; I did some math operations to test and it worked. When I tried to install modules (socket.io and express) it did not work,…
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answer51
viewsError recover json on php side
Well, I’m sending a json to php but I can’t recover $.ajax({ type: "POST", url: "sys/salvar_servidor", datType: 'json', data: JSON.stringify(dados), success: function( data ){ document.write(data);…
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answer45
viewsSite interacting with local system
I have a web application running on an internal server, to be accessed only via internal network, through browser on Ubuntu machines. My real need is to send a signal to the ports (whether parallel,…
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answer114
viewsIs making PDF available in the mobile version harming the user experience?
In a project in which I participate in developing the Front-End layers, I came across a possible problem about to finalize the mobile version of the same. Such a proposal to be questioned, is in a…
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answers721
viewsHow to run c# in the browser?
Is there any way to integrate HTML and C#? Or how to Debug to C#? So, this question I’m asking so that other people, who know program apps in C#, who are venturing into the Web world end up building…
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answers171
viewsWhat are the web accessibility tools?
Hello, I’m having trouble finding some tools or tutorials that allow me to implement accessibility features in my college project. I would like to know how to implement accessibility features in a…
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answers519
viewsFreeze background when calling Popup?
What would be the best way to freeze background processing when a popup is called ? <h:link onclick="showModalPopUp(); return false;">link </h:link> The best way to pause screen…