I have been playing around with the Riemann zeta function. I want to optimize execution time as much as possible here so I put the intermediary results in temporary variables. But testing revealed that I get no performance boost from this. At least not noticeably. My question is: Even though I couldn’t …
How to solve “Uncaught TypeError: Cannot read property ‘params’ of undefined” reactjs + django
i’m practicing reactjs watching this video https://www.youtube.com/watch?v=5rh853GTgKo&list=PLJRGQoqpRwdfoa9591BcUS6NmMpZcvFsM&index=9 I want to verify my information using uid and token, but I don’t know how to deliver it. In this code: Activate.js in container and this code : auth.js in …
Lint issue with for loop
The following logic works as intended. I have no means to change the lint rules. data in this case is just an Object such as follows which gets passed in. This is the function which takes in above data Getting lint errors as follows for my for loop as follows: for..in loops iterate over the entire prototype c…
Cannot assign to read only property ‘current’ in React useRef
i used react useRef in functional components to get link on html object and store it in Recoil atom. For example: But when my Parent component ummounts I get error: react-dom.development.js:20997 Uncaught TypeError: Cannot assign to read only property ‘current’ of object ‘#’ in file re…
Multiple links in credtis, Highcharts
Is it possible to use more than 1 link as credtis? Since I couldn’t find anything in API or any other forum my approach would be to try to use a single text and single href and by some kind of parser break it into multiple links. Any ideas?? Answer Use the SVGRenderer tool to render a custom text with
How to generate data for the child component?
Here is the parent code: Here is the child code: The expected result is that: When the user picks a month from the MonthPicker, the parent component submit the select month and year to server. Get the result from the server and then send the result to the child component. The actual result is that the child c…
Set option-html disabled if j = 0
Is it possible to set select option disabled, if the value is j = 0 ? The j value is taken from a DB. Answer Try this: or this, if not work: Source: https://angular.io/guide/binding-syntax#property-and-attribute-comparison
how to filter an nested objects inside an array in javascript
I have the following nested objects in an array and i want to filter the result to return the id of a specific item. The solution i tried is returning null because of the nested objects structure i presume P.S: The structure of the data above is from the backend that iam working with. I am a beginner with jav…
See how the color is being changed with input type=color
I want to see the color being changed whilst I am changing it, not after I click somewhere else so I see the results. Like in inspect element, we are changing color and watching live – how is it being changed and how to do the same with js dom? I tried addEventListener(“mousemove”), addEvent…
loop through an array of and only show one each time using javascript
I am making a small quiz application using javascript and html. The quiz is set up so that the user can only see one question on the page. When they press the previous and next buttons, it shows the user the previous and next question respectively. What I am trying to do is, loop through an array of elements …