eref | Selected electronic component references
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kandi X-RAY | eref Summary
Selected electronic component references (incl some ex-USSR).
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QUESTION
I am running the command dev:ssr
and getting the following exception in my Angular 10 Project:
ANSWER
Answered 2020-Oct-26 at 14:25I checked your code.
It is not recommended to by pass Angular by accessing directly to the DOM. It is for this specific reason that you get issues with SSR. Always use data binding and event binding when you can.
Can't you use event binding instead of the @hostListener for this use case?
If you cannot do otherwhise, use at least the renderer2 service to access the DOM (https://angular.io/api/core/Renderer2). Do not use nativeElement
directly.
It will also help you to protect your app against cross-site scripting.
Forget also .querySelector() to request dom element. Use @ViewChild
instead.
QUESTION
I have drop down made with Mat select angular component, I need to trigger an event when I clicked outside of the drop down (body of the page).
...ANSWER
Answered 2018-Jun-05 at 21:09If you want to know when the select panel is closed, use the openedChange
event:
QUESTION
I'm creating a click event to document that close my aside menu, I created example in jquery but i don't want to do this in jquery and I cannot access to 'menu' variable.
How can I write this in pure angular ?
...ANSWER
Answered 2018-Aug-01 at 18:13As suggested in this answer, you can detect the document click
events with HostListener
. To make sure that mouse clicks don't reach the document when the menu is clicked, you should stop the propagation of the event in the click
event handler set on the aside
element:
QUESTION
I have a dynamic output from database in my PHP code. In the code, I have a toggle button which is added to every output element.
The problem is, toggle is properly working only for the first element. All other elements are just messed up: everything is visible by default and when clicking a button it just scrolls to the first element.
PHP/HTML:
...ANSWER
Answered 2019-Aug-22 at 14:47Use jQuery .each():
QUESTION
I want to keep the logic for a child component inside of it. However the event itself is when a click occurs from its parent component down.
child.component.ts
...ANSWER
Answered 2019-May-25 at 09:21You can use the target
property of the MouseEvent
to check which component was clicked and compare it with the parents node name.
QUESTION
I am using Angular 7. And I am having an unexpected behavior.
parent component code:
...ANSWER
Answered 2019-Mar-21 at 12:58The reason is that the parent component's parcial_result
already is set to true
so you cannot reassign it to true
to see changes. In order to make this work, you need to communicate the change to the parent component. Use an output for that. I'll provide an example in a jiffy.
Parent component
QUESTION
I'm trying to get familiar with Eiffel language so I've installed Eiffel Studio 18 and created a Graphics application. Compilation failed with message:
...ANSWER
Answered 2018-Dec-09 at 10:28The compilation error when running from VS development command prompt is related to the mismatch between C compiler version and used Eiffel run-time library. Setting the corresponding environment variable before launching the compilation should fix the issue:
QUESTION
I'm using an Angular 5.x template, but I upgrade it to Angular 6 using https://update.angular.io/ guide. Now I have this error in my constructor
...ANSWER
Answered 2018-Jun-25 at 17:08I fix the problem.
What I did was just run npm i @angular-cli --save
and it changed from version 6.0.7 to 6.0.8, I also updated it globally. Then I run ng update @angular/cli
but it doesn't change anything in my package.json. Now I can use ElementRef
alone, or ElementRef
or ElementRef
, EVERYTHING WORKS NOW. I don't understand what angular-cli has to do with my tslint or typescript install, but thats the only thing I did.
QUESTION
In web programming, a common pattern for form submission is:
- If the form is valid, redirect to another page (Post/Redirect/Get).
- If the form is not valid, redisplay the form (possibly including error messages this time).
How do I express this in Ocsigen?
I've been reading the documentation, but could not figure out how to accomplish this simple (and very common) task.
Example use case:
Suppose I have a login form that guards against unauthorized access to the admin panel (a page that should only be accessed by administrators). If the user provides the correct credentials at the login form, the user should be redirected to the admin panel. If the credentials are incorrect, the user should be redirected back to the login form. So far, I have successfully implemented this functionality.
However, I am at loss when it comes to implementing the following: if the user is already logged in and tries to access the login form, the user should be redirected to the admin panel. Also, if the user is not logged in and tries to access the admin panel, the user should be redirected to the login form.
Below is my code up the point I got stuck:
...ANSWER
Answered 2018-Apr-27 at 14:37I don't know if you found the solution as your question is kind of old by now but here is what I found:
I used "Registering services that decide what they want to send" from https://ocsigen.org/eliom/6.3/manual/server-outputs#redirections
The idea is to register you services with Eliom_registration.Any, this allows the handler attached to the service to decide on the fly the type of answer to provide by using the appropriate send function.
QUESTION
I am trying to create my own dropdown component. The problem is, my dropdown works, but I have a few components which use this dropdown. When I click on their toggle buttons, multiple instances of dropdown menu is opened. Why is that happenning?
I want to see only one instance of dropdown visible at a time. My logic responsible for closing/opening dropdown:
...ANSWER
Answered 2018-Mar-13 at 11:04The $event.stopPropagation();
in the directive stops the propagation of the event to be handled by the other dropdown components.
You should let the event propagate and find another way to close the dropdown. May be in the directive code ?
I updated your example to fix the reported issue.
You could find a more elegant way of fixing it.
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