Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. You can use the CSS from another Pen by using it's URL and the proper URL extention.

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JavaScript

Babel includes JSX processing.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

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Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

Behavior

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Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

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HTML

              
                <h2>Formulario</h2>
<form action="https://www.google.es" method="post" id="formEjemplo" target="_blank">
  <div class="row m-3">
  <input type="text" name="search" value="" placeholder="Texto a buscar" />
    <input type="submit" class="btn btn-success" vlaue="Enviar" />
  </div>
</form>

<p>Si quitas el código del apartado JS, verás que pulsando la tecla Intro, el formulario se envía.</p>
              
            
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CSS

              
                
              
            
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JS

              
                // Si pulsamos tecla en un Input
$("input").keydown(function (e){
  // Capturamos qué telca ha sido
  var keyCode= e.which;
  // Si la tecla es el Intro/Enter
  if (keyCode == 13){
    // Evitamos que se ejecute eventos
    event.preventDefault();
    // Devolvemos falso
    return false;
  }
});
              
            
!
999px

Console