Most voted "front-end" questions
In software projects, front-end is the part of the software system that interacts directly with the user. If the question is not about "front-end", do not use this tag, even if you are using "front-end" in your project.
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viewsDoubt query SQL Nodejs
I have the following question in my project for a college job: I need, in a specific route, to show the user’s data, which consists basically of his personal data and the posts he has performed. The…
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answer39
viewsMake effect of Houver with jquery transiting between elements
I am trying to make an effect that by hovering the mouse over an element, if it is not selected; display the effect, in my case a text color change. Unfortunately, I’m having some difficulty. I left…
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viewsCordova Can’t save files inside root folder
I’m trying to save it in the briefcase Download in the root do dispositivo Android, but do not access it and the file is not created, not even if I create directory. In the Cordova documentation you…
android apache-cordova front-end cordova-pluginasked 3 years, 2 months ago Matheus Perozini Magalhães 1 -
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viewsError: Invalidpipeargument: '[Object Object]' for pipe 'Slicepipe'
I am developing a system, which lists logs and is doing the log listing correctly. But there’s a mistake I don’t understand. LogComponent.html:24 ERROR Error: InvalidPipeArgument: '[object Object]'…
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answer79
viewsQuestions about HTML/CSS - Spotify Page
I’m recreating the Home of Spotify following a course I picked up on the Net and while continuing alone the rest of the site that in the course had not yet, there are parts in which I’m having…
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answer56
viewsChange view when clicking on another item?
I’m making an email application and I want when I click the email being viewed to change. What I want to happen is: I want to apply the same function in both parts. As for clicking on the email, if…
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answers309
viewsIntegration between Console Application, Webservice and Frontend Web C#
I am developing my TCC and need guidance on how best to do some parts of the system. Description: It is a system for optimizing the use of laboratories. Such a system should have web frontend on the…
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answer76
viewsValidation of fields and data in table does not work
I want to validate the fields if they are properly filled and check if the sum of the fields is greater than 10 and show the data in the table but none of this is happening. If I leave the fields…
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answers107
viewsDon’t I have to worry about the frontend?
I would need to worry about the vulnerability of frontend or just with the backend?
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answers48
viewsHow to Get the value of a multiplication?
System made in Vaadin + Java + Springboot + Maven + Mysql I have a sales system, where the user chooses the product he wants to buy in a Combobox, sets the amount he wants to buy (Numberfield), when…
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viewsJavascript: How to pick up an array of objects within a child of an array of objects
I have the following example object: const empresa = { nome: 'Tal tal', endereco: 'taltaltal', groupos: [ { nome: 'taltaltal', codenome: 'tal', as: [ { nome: 'grupo a', apelido: 'ga' }, { nome:…
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viewsModal’s button doesn’t work!
I own a modal that warns about Policies and Terms of Use. Basically it will close if clicked on any area outside of it and the close button, but I tried to implement (unsuccessfully) that it was…
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answer351
viewsPause running using Sweetalert (swal, Javascript)
Hello, Basically I have a while in Javascript running, depending on the result it presents me an informative message, I want to display this informative message and continue the execution after the…
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answer234
viewsResize DIV according to menu size
I put html + css code inside a Jsfiddle to help visualize the problem. What I need to do is that the div named "kk" resizes according to the menu size, for example: if the menu is minimized it…
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answer509
viewsChange a component through another component - Angular 8
Guys, I have a Nav component where owns the company logo and a Home component, however, Home could not exist the logo I have in Nav. What would be the hidden forms of the logo when the home route…
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answer459
viewsHow to send form contact data by email to JS, or HTML5 or PHP
Hello, I have been making the form with Html5 and using a separate PHP code to send the form this way. php -> { if (isset($_POST['BTEnviar'])) { //Variaveis de POST, Alterar somente se necessário…
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answer107
viewsHow to catch a child object using Axios?
I’m making a website using React. When I run the GET method, I get the following result On the front, the code is like this: import React from 'react' import axios from 'axios' export default class…
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answer61
viewsAngularjs and ui-router: loading routes
I’m developing an application with Angujarjs and ui-router and I’m having trouble loading routes. To facilitate the explanation I will delete parts of the code. My route file looks like this:…
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answer39
viewserror when applying template to dropzonejs
I’m having a hard time understanding the workings of the dropzoneJS Even though I have consulted the documentation I have not understood how this change is made. End result I’d like to get is image1…
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answer333
viewsHow to make the back-end and front-end connection?
I need your help. I have an HTML form, which requests two types of data from the user, Height and Weight. And I have a code in Java that will receive these two data and calculate the BMI. My…
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answer86
viewsInserting elements at specific array positions
Good night, I’m trying to interface a room system using React, 8 people can enter each room. I return the users contained in the API room, but I also wanted to indicate the empty spaces of the room,…
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answer67
viewsHow to create encrypted requirements in the production environment?
I was analyzing a frontend application written in symfony (PHP), and when opening its requestes I came across the contents of this image: I found it interesting because the request name is encrypted…
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answer48
viewsBy clicking the button I get a message from "Referenceerror"
Context I created an application that displays a listing made from the variable - it’s in the application state - projects along with a button "Add button". By clicking on it I’m getting the message…
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answers82
viewsHow do I use Javascript to check if my input has any written text?
I tried it this way: function aviso() { document.querySelector(".registers_button") let email_box = document.querySelector(".email") if (email_box.innerHTML == '') { alert("Por favor, preencha os…
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answer82
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viewsAngular - Error: Cannot find a differ supporting Object '[Object Object]' of type 'Object'. Ngfor only Supports Binding to Iterables such as Arrays
Error: Cannot find a differ supporting Object '[Object Object]' of type 'Object'. Ngfor only Supports Binding to Iterables such as Arrays. I have this Javascript backend that is running on port 3000…
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answer34
views"Justify-content: space-between;" is not working - Flexbox
Hello. All right? I’m creating a box with three items. One needs to be glued to the top, the other in the middle and the other glued to the bottom, to the base of the layout I need to do. So I used…
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answer31
viewsHow do I change the position of two names in the table using up and down buttons?
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Exemplo de…
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viewsHow to use Redirect in my React application
I’m making an application in React, I’m using the Redux and the saga Redux. I am protecting the routes, but when I do the redirect does not take me to the main page of my appeal. That’s the code of…
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answers164
viewsCreate dynamic form with tags
Before you read the description below, know that I’m looking for a direction, not for you to code for me. Library references that might help me, some technique I need to know. What I need to do To…
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answers174
viewsSplit() javascript method in an array
How to achieve the same result of variable down in the array? // Variável var str = "How are you doing today?"; var res = str.split(" ", 3); document.write(res) // Array var str = ["How are you…
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answer343
viewsPHP: Questions about front-end and back-end input validation
The questions are about how to make the validations in front-end and back-end. Basically, the doubts are as follows: If the front-end validation is disabled as the messages to the user? Validating…
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answer92
viewsEslint problem in Reactjs with useEffect, in this case how do I not need to put the // Eslint-disable-line
Well, folks, I have a function that allows for some variables within it. However, it should only be executed when a dependency specific to it is changed. in the case of index useEffect(() => {…
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answers118
viewsLeave left and right side with height 100% independent of the content size
.box { display: flex; height: 200px; max-height: 50%; margin: 10%; background-color: aqua; overflow:…
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answer66
viewsHow to insert an image via CSS?
Follow my HTML code: <!DOCTYPE html> <html lang="pt-br"> <head> <meta charset="UTF-8"/> <title>web page</title> <link rel="stylesheet" type='text/css'…
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answers196
viewsModal does not open in HTML
Good morning!! I have a modal created on my page, but when I click on the link I referenced it does not work, it just happens nothing. I have it in another page and it works normal, but on this page…
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answers232
viewsHow to give bottom spacing (distance) in a li
Hello, guys. I’m new with development and I’m studying a little front-end (and loving hehe) I’m, for student purposes, creating a simple store website. I created a menu at the top of this page,…
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answer35
viewsImage is not changing when I click (javascript)
I’m doing an old game and added an eventListenner to each space, so that as soon as I clicked, the image would change. But it’s not working and I can’t understand why. Follow js, HTML, CSS and…
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answer27
viewsJquery - Open all tabs
I’ve created a div that will expand. But when I click expand, all the Ivs open instead of just opening the one I want to expand. Is there any way to open only the div I clicked? Note: It will be…
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answer305
viewsMove column items to grid css column
I want to know if there is a way to move an item within a column to another column using css grid. Follow example: here I wanted to move this green div to the second column of the purple div using…
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answer446
viewsHow to change default background-color of . active Bootstrap 4
Good colleagues. I have a small problem that I have not been able to solve, the question is this: I intend to change the color of an element that is dropdown-item when it is active, that is when it…
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answer58
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viewsmy entry page is 1920x1080 but with a scrool on it
I want to take the scrool out of the page but when I put the position: Fixed it cuts the page and when I put the position: abosolute, gets an equal scrool on the page presented If anyone has the…
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answer40
viewsHow to take the current value of a select with angular
import { MatchService } from './../match.service'; import { Router } from '@angular/router'; import { Component, OnInit } from '@angular/core' import { Match } from '../match.model'; import…
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answer102
viewsWhen is the real need to use Javascript?
I’m new to the world of development, and I started with the Front-End. I’ve been looking to specialize in HTML, CSS and especially Javascript, but over time I’ve been realizing that with the…
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answer47
viewsI need to remove this circular border that the background-color I inserted is leaving around the icon, does anyone know how to do?
HTML: <div class="contato"> <a target="blank" href=""><img src="/icones/instagram.png" alt=""></a> <a target="blank" href=""><img src="/icones/whatsapp.png"…
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answer262
viewsRead Json Angular 9 format
my api returns a json format as follows { "Errors": [], "Result": [ { "CompanyName": "teste inicio", "FantasyName": "inicio" }, { "CompanyName": "teste meio", "FantasyName": "meio" }, {…
angular typescript front-end angularjs-directives angular-materialasked 4 years, 5 months ago Thiago Ubiratan 353 -
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answer287
viewsHow to distribute column spacing of a responsive table equally?
How can I distribute column spacing equally from a table using CSS? Ex: <table> <tr> <td>Nome</td> <td>Email</td> <td>Telefone</td> <tr>…