I want to use a useState hook to change the color of my react icons to blue in my sidebar upon clicking one of them. I tried this and then in the return I would like to know what I am doing wrong? Any help would be greatly appreciated. Thank you. Upon further inspection, I styled using component styles, so
Tag: use-state
How to use useState to display a different language
I’m trying to do a function using useState to change the languages of my website. However, I’m having an issue thinking about the logic of how can it be done since I’m newbie. 1st question: How can I use the function “handleLanguage” to change the menu language when I click in &l…
React: How to set a component in ‘active’ state one at a time, and remove ‘active’ from all other component on click?
I want to set a particular component as active on click, and update the active component when some other component is clicked. Currently, both the components are remaining in active state. I want to remove active state from previously clicked component. Answer To make it general, let’s imagine that you …
How to replace Array in useState?
I want make program that table content is changed by user’s select. So I put empty array in useState, like this. And select html code: When I select option, data will be changed. But I don’t no how to do it with useState. These are data And my React code: I tried using map. But I don’t know …
How to concat the object is useState array?
I have the useState varible. I want to concat the value with new object. rules: 1.If the date exist with isSelected flag then make as false otherwise, make as, my function below, expected output but I got this, Answer Replace your map code with this
How can I delete an item from my todolist
I am trying to learn react js , but I don’t know how to delete an item from my list, could you help me ? Actually, I am not professional , but I am really interested in learning, there is my codes which add some new item to my list properly, but I don’t know how to delete them when
ReactJS useState hook – asynchronous behaviour
I am building a page to list products. So I’ve one input:file button to select multiple images and then I’m calling an API to upload that images on the server and displaying progress in UI with images. Here’s my code. As the useState is asynchronous, I can’t directly pass that react st…
My React state doesn’t update when setState is called
I’m trying to make a simple animation when the burger element is clicked I’m trying to update the following state with an animation when the burger is clicked but the state doesn’t update no matter what i try. Edit: Someone suggested i post the full code Answer There’s a lot of bad sme…
React – Function unaware of state when called from keydown event
I’ve been working on learning React, and in doing so built a todo app using class components. Recently I have been working to make a copy of the todo app using functions and hooks instead of classes. Having refactored the code everything appears to be working correctly aside from one use case. CASE 1: W…
reactjs useState: select onChange triggers setState but component doesn’t re-render
I’m trying to sort an array of objects by property using a select dropdown in react. the data is defined in the parent container using the useState() hook, and I’m passing an onSortChange function down to the child select component, DataSelector. The data are displayed as a list by another compone…