angular - Cannot read property 'native-element' of undefined

Question

I am using ionic 2.

I need to get HTML element value.

Actually, I used viewchild.

Here is my html template code

<div class="messagesholder" *ngFor="let chat of chatval | orderby:'[date]'; let last = last">
       {{last ? callFunction() : ''}} 

   <div *ngIf="chat.sender == currentuser || chat.receiver == currentuser">    
     <p class="chat-date"  id="abc" #abc>{{chat.date | amDateFormat:'LL'}}</p>                 
              {{checkdate()}}                         
   </div>

chat.date value is firebase value. I access this element. But I didn't get the value of the element.

Here is my component

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

    export class ChatPage   {
      @ViewChild(Content) content: Content;
      @ViewChild('abc')abc: ElementRef;
       constructor(){}

      ngAfterViewInit(){

       console.log("afterinit");
       console.log(this.abc.nativeElement.value);

      }
    }

I referred this link How can I select an element in a component template?

I tried in many ways.

But I am getting this error

Cannot read property 'nativeElement' of undefined.

Answer 1

I think you are tring to get the value from html before rendering completely. If you try to print the value in a button click, it will works.

depend on your code I have modified a little.Try the below, it is working for me.

  ngAfterViewInit() {
    console.log("afterinit");
    setTimeout(() => {
      console.log(this.abc.nativeElement.innerText);
    }, 1000);
  }

Note: If not working, please increase the timeout time and try again.