Question

我需要在html字符串中搜索以下代码：

// Angular
import { Component, OnInit, ElementRef, ViewChild, ChangeDetectionStrategy, OnDestroy } from '@angular/core';

import dayGridPlugin from '@fullcalendar/daygrid';
// RXJS
import { debounceTime, distinctUntilChanged, tap, skip, take, delay ,map} from 'rxjs/operators';import { of, Subscription, Observable } from 'rxjs';

import { Store, select } from '@ngrx/store';
import { AppState } from '../../../../core/reducers';
import {TaskService} from '../../../../core/task'



@Component({
  selector: 'kt-taskmanager-mytasks',
  templateUrl: './mytasks.component.html',
  changeDetection: ChangeDetectionStrategy.OnPush,

})
export class taskManagerComponent implements OnInit, OnDestroy {


  calendarPlugins = [dayGridPlugin];
  Task = "Hello World"
    message : Observable<any> 
    tasks : Observable<any[]>

    // Subscriptions
    private subscriptions: Subscription[] = [];


    constructor(
        private store: Store<AppState>,
    private http: TaskService,

) {}

    ngOnInit() {

  }


    onClickMe() {
        this.message =  this.http.getAllTasks()
        this.message.pipe(      

        tap( r => {this.tasks = r['results'],console.log(this.tasks)},
        err => console.error(err)
        ))

        .subscribe()
    }
    /**
     * On Destroy
     */
    ngOnDestroy() {
        this.subscriptions.forEach(el => el.unsubscribe());
    }


}

我如何用正则表达式找到它？

我尝试过：

 <a href="http://example.com" target="_blank" title="Site name"><img src="http://site.loc/images/banners/we_on.png" width="88" height="31" alt="Site name"></a>

但是我得到了错误的未定义表达式。也许需要检查是否在html上我有一个链接以及该链接的$html = (string) $client->getBody(); //html content $verified = preg_match('/ <a href="http://example.com" target="_blank" title="Site name"><img src="http://site.loc/images/banners/we_on.png" width="88" height="31" alt="Site name"></a> /', $html) ? true : false;？

PHP在html页面上搜索特定的html代码

0 个答案: