Folks, I have an anchor tag inside my component like so: I want to call an analytics function when user clicks on this tag like so: Notice that I’m not setting state or calling any of the react functions. Is it okay if I just call a function on the onClick event of the anchor tag? Something like this: w…
Tag: javascript
react useEffect comparing objects
I am using react useEffect hooks and checking if an object has changed and only then run the hook again. My code looks like this. Unfortunately it keeps running as the objects are not being recognised as being the same. I believe the following is an example of why. Perhaps running JSON.stringify(apiOptions) w…
Cannot call a function inside mounted()
I have a chat API that I’m connecting to a Vue.js project. When user goes to a chat room page, it sends an ajax request and then calls the function that fetches the whole chat history: but it fails with: TypeError: _this.fetchChatSessionHistory is not a function I understand that it might be defined at …
Memoize a curried function
Is it possible to memoize f with regard to the 2 arguments, namely: Answer You could take a Map as cache and take nested maps for all following arguments. This cache works for arbitrary count of arguments and reuses the values from the former calls. It works by taking a curried function and an optional Map. I…
Vue.js: how to use the logical Operators in a template?
I would simply like to use 2 different v-if into the same div, as the following: Actually I have this code: Containing only one v-if. And I would like to use 2 or more v-if inside the same condition, like for instance: But it give me a lot of error and I would simply like to learn the correct way
Calling Vue method from inside mounted function
In my Vue mounted code, I am calling a function test via this.test(). This works fine as intended. When however I am calling this.test() from the new ResizeObserver function, I am getting an error this.test is not a function I understand that this is because the this there is now pointing to the resizeObserve…
The useState set method is not reflecting a change immediately
I am trying to learn hooks and the useState method has made me confused. I am assigning an initial value to a state in the form of an array. The set method in useState is not working for me, both with and without the spread syntax. I have made an API on another PC that I am calling and fetching
React-responsive-modal: Change background-color when modal is open
I use react-responsive-modal to open some modals within my react app. When i open the modal, there is an overlay effect that darkens the background behind the modal. Is there any way to darken the background for 100% or set any color for the background so i cant see the stuff which was there before the modal …
Vue filter array A by array B
I have a table with data from a rest API. The table has objects with unique ids and I have a group filter with unique group ids. The group id does not appear in the table, therefore I have to create an array which only contains the ids of the table objects. Every time the group changes the array will
Close Persistent MUI Drawer on clicking outside
I am trying to use Drawer component in MUI React. I want that state inside the Drawer component should not lost on closing of Drawer component, hence I’m passing variant=”persistent” in Drawer component. Now, the problem is that the Persistent Drawer does not provide backdrop functionality b…