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Category: Questions

unable to only select a single material ui checkbox

I am new to react and I am making a simple todo app using react js and material ui. What I have is a separate component for taking the user input (TodoInput), and a separate component for rending each individual todo task (TodoCards). What I want to do is enable the user to click the checkbox rendered in the …

Only display icon in parent if there’s the relevant data in child component, but in order to have the data I must click on that icon

Alright, it took me awhile to even formulate the question for this. This is more related to a design strategy rather than anything. I have a view that contains a table that displays a list of all users.Each row of the table has an icon on the left that will expand (or collapse) a component called UsersTrainin…

node.js express permission error on linux

using arch with admin user account and no sudo on this script: i get this error that didnt change when i changed the port or the url to trigger it it instantly gives me this error after i run the command: node site.js (the code above is site.js) if i run the script with sudo it works fine but i

Adding a number to number results in NaN in my program. WHY?

I am trying to add secondsPassed to timePassed but when doing so I get NaN. I can’t find anything wrong so why is timePassed = NaN when adding secondsPassed to it? Answer You don’t seem to pass timeStamp argument to gameLoop() function. Passing it fixes the issue. Also make sure, your oldTimeStamp…

how to insert deep in object

I have this object with tables: An I would like to insert dynamicly a new table. I tried this: But it overwrites my exsiting entrances. This will also not work: How this will work? Answer For a more reusable solution, take a look at this SO question – you want to deep merge the new object with the old o…