I have an object: const options = {}; and I want to add fields base on another object. if they false I don’t want to add this key to the object. right now I write my code like this: const options = {}…
Tag: javascript
while updating class name of an element why “this” keyword is needed?
I’m referring to example // Get the container element var btnContainer = document.getElementById(“myDIV”); // Get all buttons with class=”btn” inside the container var btns = btnContainer….
Use scrollIntoView() and scroll to the bottom of the selected element
I have a list of chat messages inside a div and want to scroll to the bottom each time an element is added. I tried calling a function that selects the last item and uses scrollIntoView(). The issue is that it scrolls to the top of the selected element and not to the bottom of it which is needed in
change parent state from child
I want to change the parent state from the child but I can access the callback function just once Answer Try this:
Nested component does not render properly in Svelte/Sapper
I have three files inside a slug. I use slug parameters as directory name. The problem I am having is everything except the each loop in taglist. For some reason it does not receive the prop tagList. …
TypeError: Cannot read property ‘length’ of undefined, API TMDB
I am using the TMDB API which allows me to display movies in a list. I have my Add.js component which allows me to make a query and search for the movies and add them to my list But I get this error: TypeError: Cannot read property ‘length’ of undefined Add.js Answer The problem is happening at th…
Filtering, mapping and sorting documents in aggregation pipeline
Lets say I have an aggregation pipeline, and I am being able to get the required details as needed but I need to sort values of key named visits in descending order and then cherry pick items in it. Sample response Now, what I am looking for is to arrange the visits field in descending order based on _id. And
How to change the child state component from parent in functional component
I have created a Count down timer component and I have a Button near this component and I want when users click on this button, resets the timer and for doing this I should change the child state I found the solution for changing parent state from the child but I don’t find the solution to this can it b…
React Hook Form – Controller – React AsyncSelect – Lodash Debounce | Failed showing loadOptions
React hook not showing option in loadingOptions in AsyncSelect when I use debounce from lodash. Here is the code. But, when I am not use debounce like loadOptions={(v) => getAsyncOptions(v)} It works. How to handle this debounce? Answer loadOptions expects that a callback parameter is called with the new o…
Get match range value from the array in vuejs
I have below types of array in my vue js. Now I want to find the value key value of match the range. So it’s fall in 25 range so my output should be 25. I tried below code but it always return all the range. Edit: My input is 5 and it’s fall between 0-25 so I want to