angular-best-practice | This is a best practice AngularJS package | Style Language library
kandi X-RAY | angular-best-practice Summary
kandi X-RAY | angular-best-practice Summary
This small AngularJS application contains some simple examples explaining the components of angular. It tries to use the best-practice design pattern for everything and is inspired by following projects:.
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QUESTION
Would there be any errors or collision if using ViewChild and Input at the same time? Or is it recommended practice in general?
Currently have Parent and Child component.
Requirements:
a) Parent needs to tell child component to conduct many things: mark form as touched, update values, manipulate the DOM, remove validators, etc. Things which are harder with @Input().
b) Also needs to apply input, however looking at resource here, ViewChild vs Input/Ouput - Angular Best Practices
ViewChild will not display child component View data changes, from ongoing inputs with NgOnChanges(). However, using @Input() will render changes in the Input/parameter.
So if using both options, ViewChild And Input to extract both benefits, wondering if it may cause errors later? Will Native Angular 8 face any channel communication issues if it has these two ways of communicating with child?
Other Resource :
angular's @input vs viewchild for sending data from parent to child component
...ANSWER
Answered 2020-Feb-20 at 19:56The link you indicate is a bit old. In my opinion, the use of viewChild is usefull when we want to use a method or function of the child(*), or change his aspect. For control a variable or a FormGroup or formControl my best bet is use @Input.
Remember that, when we pass an object to a child in a Input, there are an unique object, so parent and children has the value when any change happens -in children or in parent-, e.g. if we pass a FormGroup, you can mark as touched, remove/add validators, use setValue... from parent or form children. About @Input is true that if you has a "input fixed" -you pass a variable that not change- ,as
QUESTION
Tl;dr: It seems the core.module style is no longer part of the official Angular Style Guide, but it must have been removed only recently. What is the new best practice for importing singleton services and why was the style removed?
I just read this guide on getting started with Angular Material and it states
...ANSWER
Answered 2019-Aug-22 at 10:00Well, simply said it never been required:
You may also completely remove the following files. They are AngularJS module configuration files and not needed in Angular:
- app/app.module.ajs.ts
- app/app.config.ts
- app/core/core.module.ts
- app/core/phone/phone.module.ts
- app/phone-detail/phone-detail.module.ts
- app/phone-list/phone-list.module.ts
As for the reason why it got removed:
@jenniferfell @brandonroberts fyi. @jenniferfell we removed
CoreModuleas a recommended technique because now the preferred way of providing services is usingprovidedIn, however @bisonfoutu has a great point. I think the focus of this issue might be best suited for a style guide point on Feature Modules orSharedModulesection, but I'd love to hear what the team and community have to say.IMO, where it could go were we to come to the conclusion that we should advise this technique: https://angular.io/guide/styleguide#shared-feature-module
Thanks for filing this issue, @bisonfoutu!!
Thoughts are welcome! ✨
QUESTION
I'm using a factory service to fetch some data using the $http service. The problem here, I dont want to make a http request each time, I want to save this data somewhere and get a local copy of it when needed. To that end I thought creating an array inside that factory and assign the loaded data to it on the first call, and then just return it when required, instead of loading it again from the server. In my case, it the http service is fired every time. How can I fix this? I read here but that does not answer my question.
This is my factory:
ANSWER
Answered 2017-Jan-11 at 11:08You do not need to cache the response of $http.get manually, angularJS itself provides a way to cache the response. Try below code in your getJsonData function of your factory:
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