TypeScript
TypeScript med AngularJS
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parametrar
namn | Beskrivning |
---|---|
controllerAs | är ett aliasnamn, till vilket variabler eller funktioner kan tilldelas. @see: https://docs.angularjs.org/guide/directive |
$inject | Beroende på injektionslista, det löses med vinkel och vidarebefordras som ett argument till konstruktörsfunktioner. |
Anmärkningar
När du utför direktivet i TypeScript, kom ihåg den kraften i detta språk av anpassad typ och gränssnitt som du kan skapa. Detta är extremt användbart när du utvecklar enorma applikationer. Kodavslutning som stöds av många IDE visar dig det möjliga värdet efter motsvarande typ du arbetar med, så det finns mycket mer mindre som bör komma ihåg (jämför med VanillaJS).
"Kod mot gränssnitt, inte implementeringar"
Direktiv
interface IMyDirectiveController { // specify exposed controller methods and properties here getUrl(): string; } class MyDirectiveController implements IMyDirectiveController { // Inner injections, per each directive public static $inject = ["$location", "toaster"]; constructor(private $location: ng.ILocationService, private toaster: any) { // $location and toaster are now properties of the controller } public getUrl(): string { return this.$location.url(); // utilize $location to retrieve the URL } } /* * Outer injections, for run once controll. * For example we have all templates in one value, and we wan't to use it. */ export function myDirective(templatesUrl: ITemplates): ng.IDirective { return { controller: MyDirectiveController, controllerAs: "vm", link: (scope: ng.IScope, element: ng.IAugmentedJQuery, attributes: ng.IAttributes, controller: IMyDirectiveController): void => { let url = controller.getUrl(); element.text("Current URL: " + url); }, replace: true, require: "ngModel", restrict: "A", templateUrl: templatesUrl.myDirective, }; } myDirective.$inject = [ Templates.prototype.slug, ]; // Using slug naming across the projects simplifies change of the directive name myDirective.prototype.slug = "myDirective"; // You can place this in some bootstrap file, or have them at the same file angular.module("myApp"). directive(myDirective.prototype.slug, myDirective);
Enkelt exempel
export function myDirective($location: ng.ILocationService): ng.IDirective {
return {
link: (scope: ng.IScope,
element: ng.IAugmentedJQuery,
attributes: ng.IAttributes): void => {
element.text("Current URL: " + $location.url());
},
replace: true,
require: "ngModel",
restrict: "A",
templateUrl: templatesUrl.myDirective,
};
}
// Using slug naming across the projects simplifies change of the directive name
myDirective.prototype.slug = "myDirective";
// You can place this in some bootstrap file, or have them at the same file
angular.module("myApp").
directive(myDirective.prototype.slug, [
Templates.prototype.slug,
myDirective
]);
Komponent
För en enklare övergång till Angular 2 rekommenderas det att använda Component
, tillgänglig sedan Angular 1.5.8
myModule.ts
import { MyModuleComponent } from "./components/myModuleComponent";
import { MyModuleService } from "./services/MyModuleService";
angular
.module("myModule", [])
.component("myModuleComponent", new MyModuleComponent())
.service("myModuleService", MyModuleService);
komponenter / myModuleComponent.ts
import IComponentOptions = angular.IComponentOptions;
import IControllerConstructor = angular.IControllerConstructor;
import Injectable = angular.Injectable;
import { MyModuleController } from "../controller/MyModuleController";
export class MyModuleComponent implements IComponentOptions {
public templateUrl: string = "./app/myModule/templates/myComponentTemplate.html";
public controller: Injectable<IControllerConstructor> = MyModuleController;
public bindings: {[boundProperty: string]: string} = {};
}
templates / myModuleComponent.html
<div class="my-module-component">
{{$ctrl.someContent}}
</div>
styrenheten / MyModuleController.ts
import IController = angular.IController;
import { MyModuleService } from "../services/MyModuleService";
export class MyModuleController implements IController {
public static readonly $inject: string[] = ["$element", "myModuleService"];
public someContent: string = "Hello World";
constructor($element: JQuery, private myModuleService: MyModuleService) {
console.log("element", $element);
}
public doSomething(): void {
// implementation..
}
}
tjänster / MyModuleService.ts
export class MyModuleService {
public static readonly $inject: string[] = [];
constructor() {
}
public doSomething(): void {
// do something
}
}
somewhere.html
<my-module-component></my-module-component>
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