I’m supposed to declare an object literal, accepting a parameter that gets the radius of the circle. Then returns the area of the circle. Not sure how to implement the formula A = PIr^2 This is what I have so far. Am I in the right direction? Answer I am not sure why you have the a and b property.
Tag: javascript
How can i get the number without repetition?
i want to get the number with only one repitition: i want to get [1,2,1], but right now i am getting only [2] Answer Just overwrite your original array using Array.prototype.filter:
trouble multiplying in JavaScript
So what I am trying to do here in JavaScript is find out is i want to order more candy or not. So far I compare the in Stock to the weekly average and if in Stock is < weekly average I will order 2 times the weekly Average. However, if the is greater than in Stock then i will
How to include row().child rows in downloads with dom: ‘Bfrtip’ using Datatables
I am using the dom: ‘Bfrtip’ buttons to add a Copy and Excel button to my Datatable. However, my Datatable also contains hidden row().child which do not get copied when I click the buttons. How do I include the child rows with the Copy function?. Here is the code I am using: the source json is as …
When should I use componentDidMount?
In React componentDidMount is used during the mounting phase, for example, one can setState and wrap it in componentDidMount. But, one can use setState directly and then render the component. In which cases should I prefer componentDidMount for a mounting phase? Answer It’s useful for several things: St…
Display variable names when hovering a scatter plot
Here’s a plot made with {echarts4r} that comes from this answer on GitHub: As you can see, the name of the car model and the values are displayed when you hover a point. However, I don’t know how to display the variable names in the same way. I know I could manually replace “x-axis” an…
API resolved without sending a response for /api/users/create, this may result in stalled requests. NEXTJS
I created an API endpoint to handle user account creation in my Next.js app, and I am using knex.js to handle my queries, but I still get this error: My code in /pages/api/users/create.js: Answer actually the bcrypt hash function is an async function, it returns a promise to be either resolved with the encryp…
cefsharp cannot play audio by javascript
I am writing a dictionary program using CefSharp by C#. When the dictionary page(i.e.[Longman-love][1]) is loaded I want it could play its pronounce automatically(by clicking the pronouce icon using JavaScript). Here are related codes: C# part: JavaScript part(I copyed it from web and added some ‘alert&…
How to use React with function component and hooks ONLY?
Having a React project with some component written in Class style and some others written in Hooks styles make the newcomers confuse and harder to reuse common logic. Is there a way, for example: An alternative library like Preact, Inferno,… which compatible with React but only support hooks Or an ESLin…
How do I repeat my program again in JS based on the user choice?
Ok I have a made a a little quiz using html, css, and JS. What I want to do is at the end of the quiz I would like to ask the user a choice whether they would like to re do the quiz again. I think I have to use a “while” loop but am not so sure. Ok