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HTML

              
                <!--
Erstelle deinen eigenen Passwort-Generator in jQuery.

Die detaillierte Erklärung zum Skript findest du auf Codepalm:
https://www.codepalm.de/post/einen-passwort-generator-programmieren/
-->

<h1>Passwort-Generator</h1>
<div id="password_generator">
	
	<div>
		<input type="number" id="length" name="length" value="16" placeholder="Länge des Passworts" />
	</div>
	
	<div>
		<input type="checkbox" id="low_characters" name="low_characters" checked value="on" /><label for="low_characters">Lowercase Characters</label>
  </div>
  <div>
		<input type="checkbox" id="upper_characters" name="upper_characters" checked value="on" /><label for="upper_characters">Uppercase Characters</label>
  </div>
		<input type="checkbox" id="number_characters" name="number_characters" checked value="on" /><label for="number_characters">Numbers</label>
  <div>
		<input type="checkbox" id="special_characters" name="special_characters" checked value="on" /><label for="special_characters">Special Characters</label>
	</div>
	
  <div>
		<input type="text" id="pw_output" name="pw_output" value="" placeholder="Passwort" readonly />
	</div>
	<div>
		<input type="button" id="generate_pw" name="generate_pw" value="Passwort generieren" />
  </div>
			
</div>
              
            
!

CSS

              
                /* Styles sind optional und können nach belieben angepasst werden */
body {
  font-family: Arial, sans-serif;
  font-size: 16px;
  text-align: center;
}

input {
  display: inline-block;
  font-size: 16px;
}
input[type="text"],
input[type="number"]{
  padding: 8px;
  width: 200px;
}
input[type="checkbox"] + label {
  width: 180px;
  padding-right: 12px;
  margin: 10px 0;
  display: inline-block;
  cursor: pointer;
  text-align: left;
}

input[type="button"] {
  width: 220px;
  margin-top: 10px;
  display: inline-block;
  border: 1px solid #0096ff;
  background-color: #0096ff;
  color: #ffffff;
  padding: 8px 16px;
  transition: background-color .5s, color .5s;
}
input[type="button"]:hover {
  background-color: transparent;
  color: #0096ff;
  cursor: pointer;
}
              
            
!

JS

              
                (function($) {
	$( document ).ready( function() {
		
		$( '#generate_pw' ).unbind( 'click' );
		$( '#generate_pw' ).bind( 'click', function() {
			
			generate_password();
			
		});
		
		function generate_password() {
			
			var characters = 'abcdefghijklmnopqrstuvwxyz';
			var special = '|<>#+*~-_!?§$%&/()=@';
			var numbers = '0123456789';
			
			var length = $( '#length' ).val();
			var special_on = $( '#special_characters' ).prop( 'checked' );
			var number_on = $( '#number_characters' ).prop( 'checked' );
			var uppercase_on = $( '#upper_characters' ).prop( 'checked' );
			var lowercase_on = $( '#low_characters' ).prop( 'checked' );
			
			var result = '';
			if( special_on )
				for( var i=0; i < Math.ceil( length/8 ); i++ )
					result += special;
			
			if( number_on )
				for( var i=0; i < Math.ceil( length/5 ); i++ )
					result += numbers;
			
			if( uppercase_on )
				for( var i=0; i < Math.ceil( length/8 ); i++ )
					result += characters.toUpperCase();
			
			if( lowercase_on )
				for( var i=0; i < Math.ceil( length/8 ); i++ )
					result += characters.toLowerCase();
			
			result = result.shuffle().slice( 0, length );
			$( '#pw_output' ).val( result ).select();
			
		}
		
		// Diese Erweiterung des Strings werden wir später beim Generieren eines Passworts benötigen. Durch die shuffle-Funktion wird ein vorhandener String gemischt
		String.prototype.shuffle = function() {
			var chars = this.split( "" );
			var length = chars.length;
			
			for( var i = length-1; i > 0; i-- ) {
				var j = Math.floor( Math.random() * ( i + 1 ) );
				var tmp = chars[ i ];
				chars[ i ] = chars[ j ];
				chars[ j ] = tmp;
			}
			return chars.join( "" );
		}
		
	});
})(jQuery);
              
            
!
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