Question

163

Angular: How to refresh a part of html ( form / div / table )

rated 0 times [ 165] [ 2] / answers: 1 / hits: 14306 / 4 Years ago, wed, august 19, 2020, 12:00:00

I have a page for create operation. In my page I have 1 form with 2 field. If I reload the page (or window.reload by code) I can see updates in that form. But I want to trigger a refresh on the form by pressing button click.

So please help me to write a function that can refresh the form (or any other html element like tabe/paragraph/etc.)

.html of my form:

<form class="was-validated" #zoneForm=ngForm id=#zoneForm>

  <div class=container>

    <div class="row justify-content-center">

      <div class="col-5">

        <div class="card" style="width: 35rem;">

          <div class="card-header">

            <div class="row">

              <div class="col-11">

                Zone Entry

              </div>

              <div class="col-1">

                <i style="margin-left: -1rem;" class="fa fa-arrow-circle-o-right" aria-hidden="true"></i>

              </div>



            </div>



          </div>

          <div class="card-body">



            <div class="row mb-1">

              <div class="col-12">



                <input [(ngModel)]="code" name="code" type="number" class="custom_form_control custom input" placeholder="ID" style="padding: 0px;"

                  disabled>

              </div>

            </div>

            <div class="row mb-1">

              <div class="col-12">



                <input [(ngModel)]="zonename" name="zonename" type="text" class="custom_form_control custom-input" placeholder="Zone Name" required>

                <i class="fa fa-user" style="margin-left: -1rem;font-size: 1rem; color:black;margin-top: 0.25rem;"></i>

              </div>

            </div>



            <div class="row ">

              <div class="col-12 ">

                <button type="button " class="btn btn-outline-primary" style="margin-left: 90%; " (click)="createZone()">Save</button>

              </div>

            </div>



          </div>







          <!-- </div> -->

        </div>

      </div>

    </div>

  </div>





</form>

the function should be called by clicking Save button

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neildrews

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answered 4 Years ago helenat · Accepted Answer

You could use ngOnChanges()

Example:component.ts file

import { Component, Input, OnChanges } from "@angular/core";



@Component({

  selector: "child-component",

  templateUrl: "./child-component.html"

})

export class MyComponent implements OnChanges {

  @Input() someHtml: string;



  constructor() {}



  ngOnChanges() {

  ///** WILL TRIGGER WHEN PARENT COMPONENT UPDATES '**



   console.log(this.someHtml);

  }   

 

}