Promise 练习

import { ModelClass } from "engine/injector/Injector";

import { Inject } from "core/injector/Injector";

import { environment } from "engine/env/Environment";

 

@ModelClass

export class ExerciseProxy {

 

private polyfill_suffix : string = "/s17/lib/polyfill/polyfill.min.js" ;

private vue_suffix : string = "/s17/lib/vue/2.2.5/vue.min.js" ;

private vuex_suffix : string = "/s17/lib/vue/plugin/vuex/2.2.1/vuex.min.js" ;

private venus_js_suffix : string = "/s17/lib/venus/2.5.1/venus.min.js" ;

private venus_css_suffix : string = "/s17/lib/venus/2.5.1/css/venus.min.css" ;

 

private initialized : boolean = false ;

 

public startInitialize( completeCbk: ( ) => void): void

{

if ( this.initialized ) {

setTimeout( function () {

completeCbk( ) ;

}, 0 ) ;

}

let __promise = window["Promise"] ;

let env: string = environment.env ;

let promise = new __promise( ( resolove, reject ) => {

let script = document.createElement("script") ;

script.type = 'text/javascript';

document.head.appendChild( script ) ;

let url = environment.toCDNHostURL(this.polyfill_suffix, false, false) ;

script.onload = function ( evt: Event ): void {

resolove("polyfill success") ;

} ;

script.src = url ;

} ) ;

 

promise.then( (data: string) => {

let promise = new __promise( ( resolove, reject ) => {

let script = document.createElement("script") ;

script.type = 'text/javascript';

document.head.appendChild( script ) ;

let url = environment.toCDNHostURL(this.vue_suffix, false, false) ;

script.onload = function ( evt: Event ): void {

resolove("vue success") ;

} ;

script.src = url ;

} ) ;

 

return promise ;

} ).then( (data: string) => {

let promise = new __promise( ( resolove, reject ) => {

let script = document.createElement("script") ;

script.type = 'text/javascript';

document.head.appendChild( script ) ;

let url = environment.toCDNHostURL(this.vuex_suffix, false, false) ;

script.onload = function ( evt: Event ): void {

resolove("vuex success") ;

} ;

script.src = url ;

} ) ;

 

return promise ;

} ).then( (data: string) => {

let promise = new __promise( ( resolove, reject ) => {

let script = document.createElement("script") ;

script.type = 'text/javascript';

document.head.appendChild( script ) ;

let url = environment.toCDNHostURL(this.venus_js_suffix, false, false) ;

script.onload = function ( evt: Event ): void {

resolove("venus_js success") ;

completeCbk( ) ;

} ;

script.src = url ;

} ) ;

 

return promise ;

} ).then( (data: string) => {

let promise = new __promise( ( resolove, reject ) => {

let link = document.createElement('link');

link.rel = 'stylesheet';

link.type = 'text/css';

document.head.appendChild( link ) ;

let url = environment.toCDNHostURL(this.venus_css_suffix, false, false) ;

link.onload = function ( evt: Event ): void {

resolove("venus_css success") ;

completeCbk( ) ;

} ;

link.href = url ;

} ) ;

 

return promise ;

} ) ;

}

}