In the past –save was used to add the package to the package.json, but as of NPM 5 installing adds packages by default: What is the –save option for npm install?. So does save do anything in NPM 5.0 +? Answer Is not necessary any more. It does not even appear in the npm documentation. But I think …
Tag: javascript
Replace an item in an array that doesn’t match any item in another array with a specific value
I’m still VERY new to Javascript and I’m having trouble with looping through an array and replacing items. I hope this explanation is clear. I have an array that looks like this: and I have another array that looks like this: I want to replace any value in the first Array that isn’t in a /([…
Hide and show rows in a table
I intend to have a table that initially shows the existing budgets. Then if you want to see the content of the budget then I click the button in the first column and it shows what belongs to each budget. I’m doing this as I show in the example below: The problem I have is that when I click the
Unable to refer to method `db.start Session ()` in mongoose, mongodb
When I try to refer to db.startSession () I have an error db.startSession () is not a function. In console.log I put db and I put logged variable below. Why can’t I refer to startSession()? connection controller logged variable db Answer you can do like this for using transaction in mongoose: Note:for u…
d3 Dendrogram: Replacing root retains old tree
I have a Dendrogram / cluster diagram’s root using d3.hierarchy. I’m trying to update the root with a selected node which should become the new head, with a new tree drawn with that node at the top. This should replace the old tree. The steps are as follows: read in flat data convert to hierarchy …
How to pass form fields from one page to another page in ReactJS?
Checkout.js This is the checkout.js file. In this file, I returned the Checkout Form, and Now I want to use the form fields of the checkout form page. The question is how will I get the form fields of the CheckoutForm page and use them on this page which is checkout.js. Because I want to submit the form data …
REACT createContext with async function return axios data
I’m creating React context but it returns a promise. In the file playlistcontext.js I’ve the following code: In the file youtube.js, that I use it like a service, I’have the code below. In this function a console.log(result.data) return me the correct data. then, I have a containers “t…
How to build a Set of unique Arrays?
I want to add many arrays to a Javascript set, and ensure that only unique arrays are added to the set. However, when I try adding the same array multiple times, it is always added instead of rejected. The .has() method always returns false as well. How do I fix this? Answer I’d use a Map instead, index…
Scroll into view element hides behind header
I am making a react application where on click over an item below select box the respective item in next section gets scrolled. Working Example for above said scenario: https://codesandbox.io/s/scroll-into-view-in-react-7xtq9 Eg: Click on Item two, then its respective field set will gets scrolled to top.. Iss…
CSS issue with changing colors on hover / clicked
EDIT – I added a snippet but it gives an error when I click on one of the divs that I don’t get when running this locally on my machine. When I run it locally the div border does turn white. It just stays white and won’t turn back red unless I specifically turn it back to red by its