Cascading or Dependent Dropdown List [country/state/city] in Angular 6/7

PHOTO

Tue Sep 05 2023 15:36:19 GMT+0000 (Coordinated Universal Time)

Saved by @dayalalok #html #angular

<div class="create-account">
  <h2>Create Account</h2>
  <div class="row">
    <div class="col-md-6">
      <form [formGroup]="createAccountForm">
        <div class="form-group">
          <select formControlName="country" class="form-control" (change)="onChangeCountry($event.target.value)">
            <option value="">Select country...</option>
            <option *ngFor="let country of countries" [value]="country.id">{{country.country_name}}</option>
          </select>
        </div>
        <div class="form-group">
          <select formControlName="state" class="form-control" (change)="onChangeState($event.target.value)">
            <option value="">Select state...</option>
            <option *ngFor="let state of states" [value]="state.id">{{state.state_name}}</option>
          </select>
        </div>
        <div class="form-group">
          <select formControlName="city" class="form-control">
            <option value="">Select city...</option>
            <option *ngFor="let city of cities" [value]="city.id">{{city.city_name}}</option>
          </select>
        </div>
      </form>
    </div>
  </div>
</div>

Component .html file for Country, State, City Cascading Dropdown

https://www.truecodex.com/course/angular-6/cascading-or-dependent-dropdown-list-country-state-city-in-angular-6-7

Save snippets that work from anywhere online with our extensions

Available in the Chrome Web Store

Get Firefox Add-on

Get VS Code extension

Comments

More like this

Angular

@dayalalok

How to implement JWT authentication in ASP.NET Core 6 | InfoWorld Cascading or Dependent Dropdown List [country/state/city] in Angular 6/7 Cascading or Dependent Dropdown List [country/state/city] in Angular 6/7 Cascading or Dependent Dropdown List [country/state/city] in Angular 6/7 How Components Communicate With Each Other In Angular Simplest way to share data between two unrelated Components in Angular | Infragistics Blog Simplest way to share data between two unrelated Components in Angular | Infragistics Blog Simplest way to share data between two unrelated Components in Angular | Infragistics Blog

#html #javascript #nodejs

How to Save HTML Form Data in JSON - Express

<form action="/new" method="post">
 
  <input name="title" type="text">
  <input name="description" type="text">
  <button type="submit">Submit Form</button>
 
</form>

> More steps

#html #javascript #jsfunctions #dom #dommanipulation

getAttribute() - how to get the value of any attribute of HTML element

<html>

<input id="contact" name="address">

<script>

    var x = document.getElementById("contact").getAttribute('name');

</script>

</html>

#html #jquery #css #navbar

Underline active navbar link

// in css:
/* Display line under clicked navbar link */
.active {
  text-decoration-line: underline !important;
  text-decoration-thickness: 2px !important;
  color: rgb(20, 19, 19);
}

//in html: 
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>

    <script>
      $(document).ready(function () {
        // Underline to remain in navbar after click using URL
        jQuery(function ($) {
          var path = window.location.href; // because the 'href' property of the DOM element is the absolute path
          $('.nav-link').each(function () {
            if (this.href === path) {
              $(this).addClass('active');
            }
          });
        });
      });
    </script>

//Note class in link should be nav-link

C:/Users/intel/Desktop/dig%20fest/Mohd%20Midhlaj%20A%20A%206E%20Website%20Building/index.html

Bootstrap Starter Template

<!doctype html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

    <title>Hello, world!</title>
  </head>
  <body>
    <h1>Hello, world!</h1>

    <!-- Optional JavaScript -->
    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
    <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
  </body>
</html>

Background Image That Doesn't Scroll on Webpage

body{
    background-image: url("img_tree.gif");
    background-repeat: no-repeat;
    background-attachment: fixed;
}

How to Create a Table in HTML

<table>
  <tr>
    <th>Name</th>
    <th>Phone</th>
    <th>Age</th>
  </tr>
  <tr>
    <td>Khan</td>
    <td>12345</td>
    <td>23</td>
  </tr>
  <tr>
    <td>Jamal</td>
    <td>54321</td>
    <td>45</td>
  </tr>
</table>

#html #javascript

Stop YouTube Embedded Video from Playing with Javascript

<main>
	<iframe src="https://www.youtube.com/embed/KQetemT1sWc"></iframe>   
    <a href="#!" onclick="stopThis()">Stop Playing</a>
</main>

<script>
  function stopThis(){
      var iframe = container.getElementsByTagName("iframe")[0];
      var url = iframe.getAttribute('src');
      iframe.setAttribute('src', '');
      iframe.setAttribute('src', url);
  }
</script>

HTML : Responsive Navbar

<!DOCTYPE html>
<!-- Created By TopArchives - www.toparchives.us -->
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title>Responsive Navbar | TopArchives</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="style.css">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/css/all.min.css"/>
  </head>
  <body>
    <nav>
      <input type="checkbox" id="check">
      <label for="check" class="checkbtn">
        <i class="fas fa-bars"></i>
      </label>
      <label class="logo">TopArchives</label>
      <ul>
        <li><a class="active" href="#">Home</a></li>
        <li><a href="#">About</a></li>
        <li><a href="#">Services</a></li>
        <li><a href="#">Contact</a></li>
        <li><a href="#">Feedback</a></li>
      </ul>
    </nav>
    <section></section>
  </body>
</html>
<!-- DON'T REMOVE CREDITS -->

Bootstrap Fixed Floating Buttons

<div class="fixed-action-btn" style="bottom: 45px; right: 24px;">
  <a class="btn-floating btn-lg red">
    <i class="fas fa-pencil-alt"></i>
  </a>

  <ul class="list-unstyled">
    <li><a class="btn-floating red"><i class="fas fa-star"></i></a></li>
    <li><a class="btn-floating yellow darken-1"><i class="fas fa-user"></i></a></li>
    <li><a class="btn-floating green"><i class="fas fa-envelope"></i></a></li>
    <li><a class="btn-floating blue"><i class="fas fa-shopping-cart"></i></a></li>
  </ul>
</div>

#javascript #eventos #mouse #css #html

mover un elemento junto al mouse, dentro de un div (eventos de mouse)

let hijo = document.querySelector('.hijo');
let etiqueta = document.querySelectorAll('.etiqueta');
//El metodo .getBoundingClientRect() nos da 
//la posicion de un elemento con respecto al viewport(en numeros).
// tomare la posicion constante del elemento .hijo 
const coords = hijo.getBoundingClientRect();
const j = coords.top; // estamos obteniendo la posicion top en numero
const k = coords.left;

// se aplica forEach para obtener posicion de cada movimiento del mouse
etiqueta.forEach(link => {
// se obtiene la posicion del mouse con la funcion  mover(e)
    function mover(e){
// se calcula la posicion top y left del mouse al cual le restamos
// la posicion del elemento "hijo"; resultado: mouse e "hijo" juntos 
	 let m = e.pageY ;
	 let n = e.pageX ;

	 let t = m - j;
	 let l = n - k;
	 hijo.style.top = t + "px"; // agregando px a los numeros
	 hijo.style.left = l + "px";
    };
// mouseover dice que entro en elemento etiqueta
    link.addEventListener("mouseover",() => {
	hijo.classList.add("edd1");// solo agrega un class que le da color red

	 window.addEventListener("mousemove",mover);// agrega el evento junto a la funcion 
    });

    link.addEventListener("mouseleave",() => {// mouseleave dice que salio del elemento etiqueta
	hijo.classList.remove("edd1"); // le quita un class, que le quita color red
	 window.removeEventListener("mousemove", mover);// remuev el evento
    });
});

/* Simples estilos para delimitar los div*/
.box{
width: 300px;
height: 300px;
border: solid 1px black;
}
.etiqueta{
width:100px;
height:100px;
position: absolute;
left:50px;
top:50px;
background: green;
overflow: hidden;
position:relative;
}
.hijo{
position: absolute;
width: 20px;
height: 20px;
border-radius: 50%;
background-color: blue;
transform: scale(0); /*desaparece el elemento hijo*/
}
.edd1{
background-color: red;
transform: scale(1); /*reaparece el elemento hijo con el mause al centro*/
} 

// un ejemplo con html
<div class="box">
  <div class="etiqueta">
  <div class="hijo"></div>
  </div>
</div>

Component library css link

<link rel="stylesheet" href="https://grapheneui.netlify.app/Components/components.css" />

#html #alpinejs

Set boolean to true after scrolling on page using Alpine.js

<div
    class="justify-between py-6 md:flex"
    x-data="{
        open: false,
        hasScrolled: false,
        reactOnScroll() {
            if (this.$el.getBoundingClientRect().top < 120 && window.scrollY > 120) {
                this.hasScrolled = true;
            } else {
                this.hasScrolled = false;
            }
        } 
    }"
    x-init="reactOnScroll()"
    @scroll.window="reactOnScroll()"
>

#html #javascript #jsfunctions #dom #dommanipulation

How to change any attribute of a HTML element

<html>	
   
   <input id="contact" name="address">
 
 <script>

    document.getElementById("contact").attribute = "phone";
	
    //ALTERNATIVE METHOD TO CHANGE
    document.getElementById("contact").setAttribute('name', 'phone');	

  </script>

</html>

#bash #ionic #angular #capacitor #qrcode #reader #typescript #javascript #html

html-qrcode reader

...

<ion-content class="scanner-hide" *ngIf="scanStatus == false">
  <div class="padding-container center">
    <ion-button color="primary" (click)="scanCode()"><ion-icon slot="start" name="qr-code-outline"></ion-icon> Scanear Código</ion-button> <!-- Botão que chama a função do scanner-->
  </div>
  <ion-card>
    <ion-card-content><h1>{{ result }}</h1></ion-card-content> <!-- mostra o resultado do scan -->
  </ion-card>
  
  <div class="scanner-ui"> <!-- Quando estamos a scanear, chama esta classe-->
    ...Scanner Interface
    </div>
    <div class="ad-spot"></div>
</ion-content>

Browse more snippets >>