I have this array: I want to extract all variations from those options with all possible directions as string separated by comma and space , it should looks like: In my experiments I used the following method to get almost what I want, but not exact I appreciate if you could get more accurate results with min…
Tag: arrays
This question is about an exercise in the book Eloquent JavaScript
The last part to this exercise is to write a recursive function that takes two parameters, a joined list and an index respectively. The function will find the value in the object within the list at it’s respective index. The code i have written works the way i want (i can see it working when i console.l…
Why does .map function return nothing in react
i have a simple react demo where to show websocket messages, but the .map function inside return statements returns nothing. No errors and no messages. Can anyone explain where the problem is in here? Now the problem in return statement: Here was nothing returned. Maybe the return statement is not rerendered …
Replace text starting “@” with respetive variables in Object – Javascript
I made this code trying to reproduce what i want to do in my Node JS API. I have “message” Array and “valueList” Object and i need to replace all text with “@” than have name of variables in “valueList” Object. If i create one more variable in valueList i need t…
Conver an array of array of objects to array of objects
Summary: I have the below list which is Array of Array of Objects. I have tired the below code and I need help with the code. how can I convert it into something like the below one. Simply an array of objects. Might be simple but I couldn’t get it to work. here is my code here is the original
Create an array from nested array of objects in vue [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 1 year ago. Improve this question I have an object as follows: I need to put all the values with the sauce ke…
How can i limit array size in type script?
I have a few cases where I want to store objects like user password history in an Array of objects to ensure he has not used the password in the last 5 times for example. My question is can I specify an array of objects with a size of 5 and then just push new passwords to array and any
Javascript Mapping Array of Objects within an Array
I know there have been some similar questions before but I’m really stuck on trying to map the below array of information (I’ve tried to implement several example). I have an Array with two information fields and a third field that contains Arrays of objects. I want to extract the name of each of …
Rebuilding/Parsing plain JavaScript object
Let’s say I have an object containing objects that have 30 key-value pairs each: My goal is to rebuild this object into something like this: The function below works like charm but I feel like there is a 10x better way to do it. I would love to see your suggestions on how I could improve it. Answer I…
Getting the error: “data.id is undefined” while iterating a JSON array
Trying to log the data in the array but getting an error: data.id is undefined This is the JSON array which is being mapped: Answer You are logging the main array instead of the mapped item, try changing to: