我具有输入属性$xml = simplexml_load_string($xmlstring);
$nodes = $xml->xpath("/root/trend/zone[@id = 809 and @name= 'AGi']/subzone[@id = 809 and @name = 'AGi']/text") ;
$text = (string)$nodes[0] ;
echo $text ; // I want this text.
：
[visitors]如何像这样在异步上替换<app-visitor-component [visitors]="visitors"></app-visitor-component>
[visitors]="visitors"答案 0 :(得分：2)
如果您的服务是可观察的，则需要使用猫王运算符：
[visitors]="(service | async)?.currentUser"
答案 1 :(得分：1)
如果不按如下所述使用async，则可以将其发送为Observable
<app-child [visitors]="(service.currentUser| async)">
答案 2 :(得分：1)
使您要传递的变量set_target_properties(TARGET_LIB PROPERTIES
COMPILE_OPTIONS "$<$<CONFIG:Debug>:/MTd>$<$<CONFIG:Release>:/MT>"
)
或// providers api
import { Injectable } from '@angular/core';
import { Http, Headers, RequestOptions } from '@angular/http';
import 'rxjs/add/operator/map';
@Injectable()
export class PostProvider {
server: string = "http://localhost/IonicFYP/server.api/"
constructor(public http: Http){
}
postData(body, file){
let type = "application/json; charset=UTF-8";
let headers = new Headers({ 'Content-Type': type });
let options = new RequestOptions({ headers: headers});
return this.http.post(this.server + file, JSON.stringify(body), options)
.map(res => res.json());
}
}或Observable
例如
Subject<T>然后使用
BehaviourSubject<T>