Here is my code in angular So there are many levels of subscribe. Not only it is ugly also the result is wrong and I can’t not find it out by debugging. How can I rewrite it with rxjs operators? Answer You can simplify it using the RxJS operators, like the following: Note: To handle the memory leaks, it…
Tag: angular
The items repeat itself in a dynamic multiple slide carousel using Angular
I have an Issue with the carousel that I am creating because the items are repeated after changing the size of the screen. My code base comes from the answer given by Eliseo in this Stackoverflow question where his carousel has the functionality to show/hide the arrow functions after changing the variable noC…
Cast $event.target to HTMLInputElement within Angular’s HTML template
From within a template’s input element, I wish to pass $event.target’s value to an onChange() function. This leads to an error: Property ‘value’ does not exist on type ‘EventTarget’.ngtsc(2339). My thoughts are that $event.target by default has an EventTarget type and shoul…
Preload images with link tag – remove warning (html/Javascript)
I got the following warning on the console when I try to add <link rel=”preload” as=”image” href=”path”> into the <head>. I tried to add the crossorigin=”anonymous” attribute but the warning persist. Any ideas how I can remove the warning, please? An…
Angular-Listening to store changes & emit a value from a Service component to a different component – only after Service completes certain operations
Here we have to classes GetDataAsyncService which waits for change in the store (and not executes the block of code under it until a change in the store ( this.getDataAsyncService.getAsyncData().subscribe((data)=>{ )}). When it is called from MainComponent it will get return of(propA); (from GetDataAsyncSe…
How to Switch off and ON the toggle Button based on the click event on icon
In my angular application I have some font icons and also I have one toggle switch ,by default the toggle switch is in ON state. And My requirement is when I click on any of the icon(the color of the icon should changed from white to red and this was done).the toggle switch should turned to OFF state and when
Sending calculated data from one component to another without Services
I want to send the value from one component to another, they are not related so all solutions are saying that I must use shared service to do that. But these services are using templates (if I’m right). Is there a way to do this sharing without services? I want to send the BMI value from homepage.compon…
JavaScript: Multiple cropping selection in one image?
PS: Is it not a research kind of question! I have been trying to do this from very long time. I am trying to make web based an image editor where user can select multiple cropping area and after selection save/download all the image area. like below. As of now I discovered two libraries 1.Cropper.JS where is …
Trouble unit testing angular reactive form control reset from button click
I am facing an issue to write an unit test case in jasmine for my angular application. Have a reactive form and trying to reset a particular form control from a button click. Even though the scenario should be simple enough to test, it seems that I am missing something here. Below is the code snippet from the…
how to fix an error “is not a function” in unit testing angular 11
I saw this error lot of times but any solution for my problem, my component : My test : I don’t understand why I got this error : ” TypeError: this.dialogService.refs.push is not a function” I try to replace useClass instead of useValue but I had unreachable knowing is angular 11. I did lot …