Tag: reactjs

58 votes
1 answers
2.5K views
ERR_CONNECTION_REFUSED when I start nightwatch via the chromium driver

package.json { "name": "assignment10", "version": "0.1.0", "private": true, "dependencies": { "@da

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Patsy
0 1 0 9
asked 07 September, 2021
52 votes
2 answers
2.2K views
Making a custom group of defined chaining methods in js

The question is related to general js programming, but I'll use nightwatch.js as an example to elaborate

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Robt
0 1 0 9
asked 07 September, 2021
55 votes
21 answers
414 views
React Js conditionally applying class attributes

I want to conditionally show and hide this button group depending on what is passed in from the parent compone

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Chelsea
0 1 0 9
asked 07 September, 2021
55 votes
13 answers
1.2K views
Invariant Violation: _registerComponent(...): Target container is not a DOM element

I get this error after a making trivial React example page: Uncaught Error: Invariant Violation: _register

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Luis
0 1 0 9
asked 07 September, 2021
61 votes
16 answers
1.2K views
Setting a backgroundImage With React Inline Styles

I'm trying to access a static image to use within an inline backgroundImage property within React. Unfort

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Kurtis
0 1 0 9
asked 07 September, 2021
52 votes
21 answers
3.1K views
Rerender view on browser resize with React

How can I get React to re-render the view when the browser window is resized? Background I have some blocks

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Dusty
0 1 0 9
asked 07 September, 2021
58 votes
20 answers
858 views
React "after render" code?

I have an app where I need to set the height of an element (lets say "app-content") dynamically. It takes the

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Jefferey
0 1 0 9
asked 07 September, 2021
56 votes
15 answers
1.7K views
useState set method not reflecting change immediately

I am trying to learn hooks and the useState method has made me confused. I am assigning an initial value to a

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Deedee
0 1 0 9
asked 07 September, 2021
66 votes
13 answers
2.4K views
Error Running React Native App From Terminal (iOS)

I am following the tutorial on the official React Native website. Using the following to build my project: r

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Corey
0 1 0 9
asked 07 September, 2021
47 votes
30 answers
2.7K views
Invariant Violation: Objects are not valid as a React child

In my component's render function I have: render() { const items = ['EN', 'IT',

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Suzan
0 1 0 9
asked 07 September, 2021
67 votes
16 answers
1.2K views
React - changing an uncontrolled input

I have a simple react component with the form which I believe to have one controlled input: import React from

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Kurtis
0 1 0 9
asked 07 September, 2021
69 votes
18 answers
550 views
How can I update the parent's state in React?

My structure looks as follows: Component 1 - |- Component 2 - - |- Component 4 - - - |- Component 5

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Stacia
0 1 0 9
asked 07 September, 2021
59 votes
24 answers
769 views
How to push to History in React Router v4?

In the current version of React Router (v3) I can accept a server response and use browserHistory.push to go t

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Rufus
0 1 0 9
asked 07 September, 2021
55 votes
22 answers
2K views
How to specify a port to run a create-react-app based project?

My project is based on create-react-app. npm start or yarn start by default will run the application on port 3

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Patsy
0 1 0 9
asked 07 September, 2021
55 votes
15 answers
3K views
How to fix missing dependency warning when using useEffect React Hook

With React 16.8.6 (it was good on previous version 16.8.3), I get this error when I attempt to prevent an infi

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Rufus
0 1 0 9
asked 07 September, 2021
57 votes
30 answers
2.6K views
How to add multiple classes to a ReactJS Component?

I am new to ReactJS and JSX and I am having a little problem with the code below. I am trying to add multipl

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Forrest
0 1 0 9
asked 07 September, 2021
59 votes
14 answers
1.3K views
React JSX: selecting "selected" on selected <select> option

In a React component for a <select> menu, I need to set the selected attribute on the option that reflec

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Gigi
0 1 0 9
asked 07 September, 2021
52 votes
16 answers
610 views
Correct modification of state arrays in React.js

I want to add an element to the end of a state array, is this the correct way to do it? this.state.arrayvar.pu

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Dorian
0 1 0 9
asked 07 September, 2021
63 votes
30 answers
2.3K views
How to update nested state properties in React

I'm trying to organize my state by using nested property like this: this.state = { someProperty: {

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Thurman
0 1 0 9
asked 07 September, 2021
44 votes
16 answers
1.3K views
Parse Error: Adjacent JSX elements must be wrapped in an enclosing tag

I am trying to set up my React.js app so that it only renders if a variable I have set is true. The way my

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Yolando
0 1 0 9
asked 07 September, 2021