I am practically new to React. In this App I am using Hooks! I’ve made a Countdown Timer that will show in a few seconds after logging in. I am unable to make it stop on a button click. I need some advise on this as I’ve been struggling for the past 2 days with this. This is my code
Tag: javascript
How to open a new PWA window from inside the PWA?
I’m trying to open a new window of my PWA application inside of it. But when I click on the anchor a new chrome tab is open. Anyone can help me to open two instances of my PWA application? An example of it is outlook, where you can open a new window of the application to write your email. Thanks
Express APP how to redirect user to /:id path from server side
I’m learning Node.js and I’m finding some troubles with redirecting the user to an :id path. I would like to print there his username. So to make an overview it is a landing page with a form where I ask for an Alias and an email. When user clicks submit I’d like to move him to /:id path to p…
Check if string contains any letter (Javascript/jquery)
How can i check if a string contains any letter in javascript? Im currently using this to check if string contains any numbers: However i want it to see if it contains any letters. Answer You have to use Regular Expression to check that :-
Using WebAudio to play a sequence of notes – how to stop asynchronously?
I am using WebAudio to play a sequence of notes. I have a playNote function which works well; I send it note frequency and start and stop times for each note. The generation of the sequence parameters occurs before the actual sound starts, which is a little confusing. The function just creates an oscillator f…
Trouble installing Swiper in my React project
I’m trying to add Swiper to my React Web App, I’m having trouble with the regular plugin, so I decided to use this framework instead: swiper-react specifically designed for React. Following the getting started tutorial: It says that I need to import these CSS files but when I try to import them in…
Why is my on click event not working? (ASP.NET MVC)
I have a checkbox in my view, with an onclick event which sends the checkboxes ID to an action result in my controller (using Ajax). However, after running a breakpoint on the passed value within my controller, it seems as thou nothing is happening when i click on the checkbox? Why could this be? My checkbox:…
nodejs – replace a string everywhere in a large file
I have some huge files which are difficult to read in memory. I need to read each line and then replace double quotes if found and edit the same file. Right now, I am reading the file line by line, storing in an array and overwriting the same file. But, that’s giving memory issue for big files. Any poin…
Typescript compiler work but Javascript result is wrong
First of all, I want to show you my directory tree: I have tried to add types on my NodeJS project by adding Typescript. For that, I have installed many things into the root folder: npm i -D typescript npm i -D @types/node npm i -D @types/express See there the index.ts script into the dir1 folder: To test typ…
Why I receive {“ok”:false,”error”:”channel_not_found”} when I am setting topic in slack?
Here is my code for setting topic channel and I receive {“ok”:false,”error”:”channel_not_found”} while the channel exists and I tried to use channelId instead of using #channelName . but no difference. And the permissions are set correct. Answer I found what was the issue. …