LoadingStrategy
LoadingStrategy is an abstract class exposed by @abp/ng.core package. There are two loading strategies extending it: ScriptLoadingStrategy and StyleLoadingStrategy. Implementing the same methods and properties, both of these strategies help you define how your lazy loading will work.
API
constructor
constructor(
public path: string,
protected domStrategy?: DomStrategy,
protected crossOriginStrategy?: CrossOriginStrategy
)
pathis set to<script>elements assrcand<link>elements ashrefattribute.domStrategyis theDomStrategythat will be used when inserting the created element. (default: AppendToHead)crossOriginStrategyis theCrossOriginStrategythat will be used on the created element before inserting it. (default: Anonymous)
Please refer to DomStrategy and CrossOriginStrategy documentation for their usage.
createElement
createElement(): HTMLScriptElement | HTMLLinkElement
This method creates and returns a <script> or <link> element with path set as src or href.
createStream
createStream(): Observable<Event>
This method creates and returns an observable stream that emits on success and throws on error.
ScriptLoadingStrategy
ScriptLoadingStrategy is a class that extends LoadingStrategy. It lets you lazy load a script.
StyleLoadingStrategy
StyleLoadingStrategy is a class that extends LoadingStrategy. It lets you lazy load a style.
Predefined Loading Strategies
Predefined loading strategies are accessible via LOADING_STRATEGY constant.
AppendAnonymousScriptToHead
LOADING_STRATEGY.AppendAnonymousScriptToHead(src: string, integrity?: string)
Sets given paremeters and crossorigin="anonymous" as attributes of created <script> element and places it at the end of <head> tag in the document.
PrependAnonymousScriptToHead
LOADING_STRATEGY.PrependAnonymousScriptToHead(src: string, integrity?: string)
Sets given paremeters and crossorigin="anonymous" as attributes of created <script> element and places it at the beginning of <head> tag in the document.
AppendAnonymousScriptToBody
LOADING_STRATEGY.AppendAnonymousScriptToBody(src: string, integrity?: string)
Sets given paremeters and crossorigin="anonymous" as attributes of created <script> element and places it at the end of <body> tag in the document.
AppendAnonymousStyleToHead
LOADING_STRATEGY.AppendAnonymousStyleToHead(href: string, integrity?: string)
Sets given paremeters and crossorigin="anonymous" as attributes of created <style> element and places it at the end of <head> tag in the document.
PrependAnonymousStyleToHead
LOADING_STRATEGY.PrependAnonymousStyleToHead(href: string, integrity?: string)
Sets given paremeters and crossorigin="anonymous" as attributes of created <style> element and places it at the beginning of <head> tag in the document.
