I am trying to loop through the req.body that has data and I am trying to return the bookStatus of all the books present inside the body. I am doing this: This returns the bookStatus of all the books, but it is just the value of the bookStatus key. I am trying to get the key as well, for it
Tag: ecmascript-6
Async generator class stuck on infinite loop javascript
I’m trying to get the following async generator to work: But it ends up in an infinite loop, and thing is always undefined. I’ve tried a similar code, but this time without the Promise/async behaviour, and it seems to work just fine. Answer The for await..of construct will attempt to iterate over …
Immutable JS – Extracting values to array
I have a record from my Redux store that looks like the following If I console log the record I get I am interested in the fruit Ids (1234 and 5678 in this example) and put them in an array. Here is what I am trying to do at the moment: But the problem is when try to use fruitIds
IntersectionObserver does not work on small screens for long sections JS
This script issues the active class for the active section. Recently noticed that it stops working on small screens. Even in the developer’s console in chrome, I will start to increase the screen size and it will appear, as soon as I start to reduce it immediately stops working (the active class disappe…
When should I set localStorage in Angular?
I have a list of employee list on EmployeesComponent and there is “Education Overview” and “Salary Overview” buttons for each records. When I click one of the overview button it goes to the OverviewComponent first and then load the correponding component (salary or education) into this…
Check an array against another with performance
I got an initial array, I am checking against another array to find how many objects have at least one instance of the Domain in data. This works but it performs very poorly when there is a lot of data. In there any way to this with a more performant approach? Thanks. Answer Go through first and index the dom…
Vue.js Can not see data in console.log
Today I have to debug my todo App, but can’t see the todo array elements in console.log Code: I tried to do it in Parent and child components, but both didn’t work, even if I try this.todos. Also got an undefined message: Can someone help me out? Thanks in advance Answer Make deleteTodo as a norma…
javascript Set with objects
When merging array of strings, I can use Set and ES6 to remove duplicates like so: But how do I compare and remove objects? Say I have this: How do I remove {id: “123”, name: “Hi”} from a combined array with Set? Answer Use a Map to deduplicate by the key name: Note that deduplicating …
Add type for onClick property which is in …props in React TypeScript
I have a button component in which I’m trying to write the prop types using type and I see this error in the console. Could anyone please help? Excerpt from my code Answer You need to add onClick into Props like:
map.get is not a function while retrieving a value from a map in typescript
I am having a map with key and value as strings. However when trying to retrieve a value based on the key it is throwing error . the following is my code snippet. the exception i got below is as follows. appreciate if you can tell me what am I doing wrong thank you Answer A Map is not a