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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>

#css #html

Background Image That Doesn't Scroll on Webpage

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

#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>

#php #interesting #interviewquestions #logic

Code to count numbers on your fingers

<?php 
function count_num_finger( $n ) 
{ 
	$r = $n % 8; 
	if ($r == 1) 
		return $r; 
	if ($r == 5) 
		return $r; 
	if ($r == 0 or $r == 2) 
		return 2; 
	if ($r == 3 or $r == 7) 
		return 3; 
	if ($r == 4 or $r == 6) 
		return 4; 
}	 

// Driver Code 
$n = 30; 
echo(count_num_finger($n)); 
 
?>

#php #interviewquestions #makethisbetter

How to find the nth Magic Number?

<?php 
// PHP program to find nth 
// magic number 

// Function to find nth 
// magic number 
function nthMagicNo($n) 
{ 
	$pow = 1; 
	$answer = 0; 

	// Go through every bit of n 
	while ($n) 
	{ 
	$pow = $pow * 5; 

	// If last bit of n is set 
	if ($n & 1) 
		$answer += $pow; 

	// proceed to next bit 
	$n >>= 1; // or $n = $n/2 
	} 
	return $answer; 
} 

// Driver Code 
$n = 5; 
echo "nth magic number is ", 
	nthMagicNo($n), "\n"; 

// This code is contributed by Ajit. 
?>

#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

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>

#php

Prevents hackers from getting username by using ?author=1 at the end of your domain url

// prevents hackers from getting your username by using ?author=1 at the end of your domain url 
// ==============================================================================
add_action('template_redirect', computec_template_redirect);
function computec_template_redirect() {
    if (is_author()) {
        wp_redirect( home_url() ); exit;
    }
}

#php

Titlebar template for use with Avada Child theme that displays featured image as titlebar background

<?php
/**
 * Titlebar template.
 *
 * @author     ThemeFusion
 * @copyright  (c) Copyright by ThemeFusion
 * @link       https://theme-fusion.com
 * @package    Avada
 * @subpackage Core
 */

// Do not allow directly accessing this file.
if ( ! defined( 'ABSPATH' ) ) {
	exit( 'Direct script access denied.' );
}
?>
<?php $backgroundImg = wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), 'full' );?>
<div class="fusion-page-title-bar fusion-page-title-bar-<?php echo esc_attr( $content_type ); ?> fusion-page-title-bar-<?php echo esc_attr( $alignment ); ?>" style="background: url('<?php echo $backgroundImg[0]; ?>') no-repeat center center; ">
	<div class="fusion-page-title-row">
		<div class="fusion-page-title-wrapper">
			<div class="fusion-page-title-captions">

				<?php if ( $title ) : ?>
					<?php // Add entry-title for rich snippets. ?>
					<?php $entry_title_class = ( Avada()->settings->get( 'disable_date_rich_snippet_pages' ) && Avada()->settings->get( 'disable_rich_snippet_title' ) ) ? 'entry-title' : ''; ?>
					<h1 class="<?php echo esc_attr( $entry_title_class ); ?>"><?php echo $title; // phpcs:ignore WordPress.Security.EscapeOutput ?></h1>

					<?php if ( $subtitle ) : ?>
						<h3><?php echo $subtitle; // phpcs:ignore WordPress.Security.EscapeOutput ?></h3>
					<?php endif; ?>
				<?php endif; ?>

				<?php if ( 'center' === $alignment ) : // Render secondary content on center layout. ?>
					<?php if ( 'none' !== fusion_get_option( 'page_title_bar_bs' ) ) : ?>
						<div class="fusion-page-title-secondary">
							<?php echo $secondary_content; // phpcs:ignore WordPress.Security.EscapeOutput ?>
						</div>
					<?php endif; ?>
				<?php endif; ?>

			</div>

			<?php if ( 'center' !== $alignment ) : // Render secondary content on left/right layout. ?>
				<?php if ( 'none' !== fusion_get_option( 'page_title_bar_bs' ) ) : ?>
					<div class="fusion-page-title-secondary">
						<?php echo $secondary_content; // phpcs:ignore WordPress.Security.EscapeOutput ?>
					</div>
				<?php endif; ?>
			<?php endif; ?>

		</div>
	</div>
</div>

#html

Navbar: Bootstrap 4 Reference

<!--logo and text (title) -->
<nav class="navbar navbar-light bg-light">
  <a class="navbar-brand" href="#">
    <img src="/assets/startupcache_logo.svg" width="90" height="90" class="d-inline-block align-top" alt="">
    Startup Cache
  </a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
  <span class="navbar-toggler-icon"></span>
  </button>
  <div class="collapse navbar-collapse" id="navbarNav">
  	<ul class="navbar-nav">
    	<li class="nav-item active">
        	<a class="nav-link" id="about-link" href="/templates/about.html">About</a>
        </li>
    </ul>
  </div>
</nav>

#html

Library

https://madeusblack.github.io/projects/Library-js/index.html

#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>

#html #basics #htmltags #seo

HTML Heading Tags <h1> to <h6>

<h1>This is heading 1</h1>
<h2>This is heading 2</h2>
<h3>This is heading 3</h3>
<h4>This is heading 4</h4>
<h5>This is heading 5</h5>
<h6>This is heading 6</h6>

#html #javascript #howto

How to dynamically update your site's copyright year

<p id="copyrightyear"></p>

<script>
   document.getElementById('copyrightyear').innerHTML
</script>

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