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Tag: javascript

How can I put validation in react, that if I have choose an option from a drop down, then that option will be disable in the other drop down menu

I am designing a form in react in which I have two categories of dropdown. one is named as “What include” and the other is “What is not include”. Now I want that if the user to select any option from the menu of “What Include”, then that option(item) will be disabled in the other drop-down named “What not Include”.

res.redirect() not working properly in express JS

I’ve been working on creating an API for a blockchain I’ve made. Everything was going fine, until I updated Node and Windows… ====== ISSUE ====== After performing a POST request, I cannot redirect to a GET page anymore. (Using Postman only no front end yet). For some reason, it was working fine and now I can’t do it in a

value of text.replace() to another variable

I have a code to clear and paste text after clicking a button. This text is pasted into two different textareas and therefore my code has to clean up the intercepted content a bit differently. The problem is that it doesn’t work to pass the content to another variable… I want txtq and txte to format the value differently for

Derecursing this specific JS function

I wrote the following recursive JS function that takes a single parameter node which is made of other nodes and modifies it by adding to each node its number of leaves (not only direct children) : Here’s an example of the node parameter : addWidth(object) would modify it and turn it into : I need help to make my function

hovering on one element while scrolling

how to hover on one element when scrolling. If you don’t know how it’s done, please tell me at least what it’s called. There is a similar effect here. link searched on many forums. Because I don’t know what it’s called, that’s why I couldn’t find it Answer If you want to know how it works I leave you my

NPM: request to https://registry.npmjs.org/corepack failed, reason: connect EHOSTUNREACH

NPM used to work no problem but now for some reason anything I try to do that involves connecting to the registry times out. The failure message I get from NPM is request to https://registry.npmjs.org/corepack failed, reason: connect EHOSTUNREACH 2606:4700::6810:1223:443 The command I’m running is npm update -g. I’m on Arch Linux, and I installed the NPM package from arch.

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