[[toc]]
DOM HTML template
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>FS-Day2</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<header>
<h1>FS Day 2</h1>
</header>
<section class="container">
<form id="my-form">
<h1>Add User</h1>
<div class="msg"></div>
<div>
<label for="name">Name:</label>
<input type="text" id="name">
</div>
<div>
<label for="email">Email:</label>
<input type="text" id="email">
</div>
<input class="btn" type="submit" value="Submit">
</form>
<ul id="users"></ul>
<ul class="items">
<li class="item">Item 1</li>
<li class="item">Item 2</li>
<li class="item">Item 3</li>
</ul>
</section>
<script src="main.js"></script>
</body>
</html>DOM JS main.js
// Single element selectors:
console.log(document.getElementById("my-form"));
console.log(document.querySelector('.item'));
//Multilpe element selector:
console.log(document.querySelectorAll('.item')); //Recomende (Newest)
console.log(document.getElementsByTagName('li'));
console.log(document.getElementsByClassName('item'));
const items = document.querySelectorAll('.item');
console.log(items);
items.forEach(item=>{
console.log(item);
});
// MANIPULATING THE DOM
const ul = document.querySelector('.items');
// ul.remove();
// ul.lastElementChild.remove();
ul.firstElementChild.textContent = 'Hello';
ul.children[1].innerText = 'Byron';
ul.lastElementChild.innerHTML = '<h1>Hello</h1>';
// EVENTS
const btn = document.querySelector('.btn');
// btn.style.background = 'red';
// Mouse Event
btn.addEventListener('click', e => {
e.preventDefault();
console.log(e.target.className);
document.getElementById('my-form').style.background = '#ccc';
document.querySelector('body').classList.add('bg-dark');
ul.lastElementChild.innerHTML = '<h1>Changed</h1>';
});
// Keyboard Event
const nameInput = document.querySelector('#name');
nameInput.addEventListener('input', e => {
document.querySelector('.container').append(nameInput.value);
});styles.css
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: Arial, Helvetica, sans-serif;
line-height: 1.6;
}
ul {
list-style: none;
}
ul li {
padding: 5px;
background: #f4f4f4;
margin: 5px 0;
}
header {
background: #f4f4f4;
padding: 1rem;
text-align: center;
}
.container {
margin: auto;
width: 500px;
overflow: auto;
padding: 3rem 2rem;
}
#my-form {
padding: 2rem;
background: #f4f4f4;
}
#my-form label {
display: block;
}
#my-form input[type='text'] {
width: 100%;
padding: 8px;
margin-bottom: 10px;
border-radius: 5px;
border: 1px solid #ccc;
}
.btn {
display: block;
width: 100%;
padding: 10px 15px;
border: 0;
background: #333;
color: #fff;
border-radius: 5px;
margin: 5px 0;
}
.btn:hover {
background: #444;
}
.bg-dark {
background: #333;
color: #fff;
}
.error {
background: orangered;
color: #fff;
padding: 5px;
margin: 5px;
}import { Component } from '@angular/core';
import { NavController } from '@ionic/angular';
@Component({
selector: 'app-home',
templateUrl: 'home.page.html',
styleUrls: ['home.page.scss'],
})
export class HomePage {
constructor(
private navCtrl: NavController
) {}
navToProfile() {
this.navCtrl.navigateForward("profile");
}
}
<ion-content>
<ion-button expand="full" (click)="navToProfile()">Navigate to Profile</ion-button>
</ion-content>
<ion-header>
<ion-toolbar>
<ion-buttons slot="start">
<ion-back-button defaultHref="home"></ion-back-button>
</ion-buttons>
<ion-title>profile</ion-title>
</ion-toolbar>
</ion-header>
<ion-content></ion-content>