javascript - performance of angularjs ng-click inside ng-repeat -

-

This is a doubt of a verified problem, but .. .. I have worked with knockoutjs for some time And there was a display problem for binding many people - a better way to use a lot of jQuery to handle them .on ('click', ...)

Now when I do diving angularjs within my ng-repeat ng-repeat and inside of this second i have some button ng-click .. 

  ; Ul & gt; & Lt; Li ng-repeat = "l in collection" & gt; & Lt; Button ng-click = "someFn ()" & gt; Click me & lt; / Button & gt; & Lt; Button ng-click = "someFn2 ()" & gt; Click me & lt; / Button & gt; & Lt; Button ng-click = "someFn3 (L)" & gt; Me & lt; / Button & gt; Click; & Lt; / Li & gt; & Lt; / Ul & gt;

Does not it make too many event bindings? Or somehow can adapt angular?

It is hardly an adaptation in this case, what will happen if you have many nested ngreipets against whom optimization should be done? In fact, it is not easy to answer. In addition, repeat items can be controlled by another controller.

I see a small hackish approach to accomplishing the task.
We can call ngClick some method from the original method and allow the value to identify clicked items

The only question left to answer is how do we attain this identity value. We need our own instructions to apply for repetitive DOM elements, which adds this value to the element. After this we can get the value from the $ Event object. 

  & lt; Ul ng-click = "itemClicked ($ event.target.itemIdentifier)" & gt; & Lt; Li ng-repeat = "l in collection" & gt; & Lt; Click the button - optimiztation = "el" & gt; Click me & lt; / Button & gt; & Lt; / Li & gt; & Lt; / Ul & gt;

Of course, you have to check the undefined values.

This approach should be customized according to your needs, because you have many clickable elements within each repeated template. However, I hope this idea is clear.


Comments

Post a Comment

Popular posts from this blog

java - org.apache.http.ProtocolException: Target host is not specified -

-
I have written a simple httprequest / response code and I am getting this error below: I used to type in my classpath httpclient, httpcore, common -Codecs and general logging. I am very new to Java and I do not know what's going on here. Please help me. code: import org.apache.http.client.HttpClient; Import org.apache.http.client.methods.HttpGet; Import org.apache.http.HttpResponse; Import org.apache.http.impl.client.HttpClientBuilder; Import org.apache.http.Header; Import org.apache.http.HttpHeaders; Public class UnshorteningUrl {public static zero main (string [] args throws exception {HttpGet request = zero; HTTP Client Client = HTTP ClientBuilder.credit (). Build (); Try {Request = New HTTP Gate ("trib.me/1lBFzSi"); HttpResponse httpResponse = client.execute (request); Header [] header = httpResponse.getHeaders (HttpHeaders.LOCATION); // Preconditions.checkState (headers.length == 1); String new url = header [0] .getValue (); System.out.println ("new url...
Read more

java - Gradle dependencies: compile project by relative path -

-
Is it possible to specify a dependency on another gradeal project in the granular (in android studios) outside the current project limits? For example, with a relative path like this: dependence {collection project ('../../ stdlib / dagger'}} MyApp (path / user / foo / workspace / mypad) The app (Path / User / Foo / Workspace / MyPass / App) And I have an Android Library Project with 3 subdomules: stdlib (path is / user / foo / Utilities (Path / User / Foo / Workspace / Stadlib / Utilis) http (Path / User / Foo / Workspace / Stadlib / HT) / Li> What I have to do is compile the Dagger, Util, http module in the MyApp project. The Stidelib Library module under heavy development And MyApp will grow in the form of Growth, so I do not want to push them into a Mewen repository. I am a little change. is likely to add another Gredle projects in some way? I will push the study library into the Maven repository after the source is in search of a temp...
Read more

ruby on rails - Object doesn't support #inspect when used with .include -

-
So I have participated in a glitch error that I do not even know how to debug. I am very new to the railing, so it has kicked my ass well when I use the .includes (school) seen by the student, it gives a blue box error, But when I look at any other model and .includes (school) , the school works just fine. class student & lt; ActiveRecord :: Base has has_many: relationships, foreign_key: "liker_id", dependent :: has_many: matches, foreign_key: "student_1_id", dependent :: deleted belong_to: school belong_to: conference belong_to: would_you_rather belong_to: home city belong_to: year is_to: Major and class school & lt; on the console activatecord :: Affiliate for the base: conference includes: respondent, class: "school", foreign_key: "rival_id" (e.g. For: School) Select SQL generated Select "School". * "School" from "school" "ID" IN (1) error message back NoMethodError: u...
Read more