Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URLs 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 its URL and the proper URL extension.

+ add another resource

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.

+ add another resource

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

Auto Save

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

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

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                <main>

  <h1>Escaping HTML symbols/entities</h1>
  <p>To allow the embedding of code examples into web pages.</p>
  <p>Replaces &lt; &gt; and &amp; with &amp;lt; &amp;gt; and &amp;amp; then copies the result to the clipboard.</p>

  <form id=converter class=frm>

    <label class=frm_lbl for=textarea data-lbl-text="Escaped HTML result, copied to clipboard">Input HTML, CSS, JavaScript, or markup:</label>
    <textarea class=frm_txtr id=textarea placeholder="Paste HTML here, then click 'Convert &amp; Copy'" spellcheck=false></textarea>

    <div class=frm_buttons>

      <button class=btn-convert data-clipboard-target=#textarea data-btn-text="Copied to clipboard">Convert<span class=-visually-hidden> HTML into escaped HTML</span> &amp; Copy<span class=-visually-hidden> the result to the clipboard</span></button>

      <button disabled class=btn-reset data-reset-target=#textarea>Reset<span class=-visually-hidden> the form</span></button>

    </div>
  </form>

  <p>Permanent online tool: <a href="https://websemantics.uk/tools/escaping-html/" target=_blank title="[new window]">Escape HTML</a></p>

</main>

<!-- Codepen footer include -->
[[[https://codepen.io/2kool2/pen/mKeeGM]]]
              
            
!

CSS

              
                *, *::after, *::before {box-sizing: inherit;}
body {
  --color: hsl(269, 19%, 30%);
  --bgColor: hsla(32,100%,85%,.35);
  --linkColor: hsla(214, 71%, 47%, 1);
  --linkColorUnderline: hsla(214, 71%, 47%, .5);
  --linkColorHover: hsla(214, 100%, 35%, 1);
  --linkBgHover: hsla(214, 100%, 85%, 1);
  --linkFocus: hsla(214, 71%, 80%, 0.3);
  --focusOutline: hsla(214, 71%, 85%, 1);

  --textShadow: #fff;
  --boxShadow: hsla(0,0%,0%,.3);
  --bgColorForm: hsla(120,50%,50%,.075);

  font-family: sans-serif;
  text-rendering: optimizeLegibility;
  margin: 1rem;
  line-height: 1.5;
  padding-bottom: 2rem;
  background-attachment: fixed;
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg'%3E%3Cdefs%3E%3Cfilter id='a'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.4'/%3E%3C/filter%3E%3C/defs%3E%3Crect filter='url(%23a)' opacity='.3' width='100%25' height='100%25'/%3E%3C/svg%3E");

  min-height: 100%;
  color: var(--color);
  background-color: var(--bgColor);
}
main {
  max-width: 36rem;
  margin: 0 auto;
}
h1 {
  font-weight: 100;
  margin-top: 2rem;
  margin-bottom: 1rem;
  text-align: center;
}
h1 + p {
  font-size: 1.35rem;
  font-weight: 100;
  text-align: center;
}
h2 {
  font-weight: 400;
  margin-top: 3rem;
  margin-bottom: 1rem;
  text-align: center;
}
p {
  text-align: center;
  font-size: 1.125rem;
}
ul, p {
  max-width: 40rem;
  margin: 1em auto;
}
li {
  margin:.25rem 0;
}
figure {
  margin: 2rem auto;
  max-width: 40rem;
}
figure + figure {
  margin-top: 3rem;
  }
figcaption {
  font-size: 1.25rem;
  font-weight: 100;
}
a:link,
a:visited {
  color: var(--linkColor);
  text-decoration-color: var(--linkColorUnderline);
  outline: hsla(214, 71%, 80%, 0); solid .25rem;
  transition:
    color .3s ease-out,
    background-color .3s ease-out,
    outline-color .3s ease-out;
}
a:hover,
a:focus {
  color: var(--linkColorHover);
  outline: var(--linkBgHover) solid .25rem;
  background-color: var(--linkBgHover);
}

/* Specifics */

.-visually-hidden {
  position: absolute !important;
  clip: rect(1px,1px,1px,1px);
  padding: 0 !important;
  border: 0 !important;
  height: 1px !important;
  width: 1px !important;
  overflow: hidden;
}

.frm {
  background-color: var(--bgColorForm);
  border: 2px dashed #f90;
  padding: .6rem 1rem 1rem;
  max-width: 40rem;
  margin: 0 auto;
}
.frm_lbl {
  display: block;
  margin: 0 0 .25rem;
}
.frm_txtr {
  position: relative;
  display: block;
  margin: 0;
  padding: 0.75rem 0.5rem 0 2.5rem;
  border: 1px solid #ddd;

  font-size: inherit;
  font-family: monospace, monospace;
  text-shadow: 0 1px var(--textShadow);
  letter-spacing: 0.01em;
  text-align: left;
  white-space: pre;
  text-overflow: ellipsis;
  word-spacing: normal;
  word-break: normal;
  word-wrap: normal;
  line-height: 2;
  tab-size: 2;
  hyphens: none;
  overflow: auto;

  min-height: 15rem;
  resize: both;
  min-width: calc(100% - 3rem);

  background-color: transparent;
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill-rule='evenodd' viewBox='0 0 1920 64'%3E%3Cpath fill='%23fcfcfa' d='M1920 64H0V0h1920v64zM20 36a11 11 0 110 22 11 11 0 010-22z'/%3E%3Cpath stroke='%23edf3ed' stroke-width='2.6' d='M0 1h1920M0 5h1920M0 9h1920M0 13h1920M0 17h1920M0 21h1920M0 25h1920M0 29h1920'/%3E%3Cpath stroke='%23e4ede4' stroke-dasharray='2 6 2 6' stroke-width='2' d='M40 2v60'/%3E%3Cpath fill-opacity='.2' d='M20 36c6 0 11 5 11 11s-5 11-11 11S9 53 9 47s5-11 11-11zm8 6a10 10 0 00-16 0c-2 2-2 4-2 6 0 6 4 10 10 10s10-4 10-10c0-2 0-4-2-6z'/%3E%3C/svg%3E");
  background-attachment: local;
  background-size: 120rem 4rem;
  background-position: top -1.2rem left 0;
}
.frm_txtr:focus {
  outline-offset: calc(-0.25rem - 1px);
  outline: var(--focusOutline) solid 0.25rem;
  z-index: 5;
}
.frm_txtr:hover, .frm_txtr:focusn {
  box-shadow: 0 .25rem .25rem var(--boxShadow);
}


/* Buttons */
button::-moz-focus-inner {
  border: 0;
}
.frm_buttons {
  display: flex;
  justify-content: space-around;
}
.btn-convert,
.btn-reset {
  font-size: inherit;
  margin: 1rem 0 0;
  cursor: pointer;
  position: relative;
  display: inline-block;
  padding: .618rem 1.618rem;
  letter-spacing: 1px;
  text-shadow: rgba(0,0,0,.9) 0 1px 2px;
  color: #fff;
  background-color: #434343;
  border: 1px solid #242424;
  border-radius: 4px;
  box-shadow:
    rgba(255,255,255,.25) 0 1px 0,
    inset rgba(255,255,255,.25) 0 1px 0,
    inset rgba(0,0,0,.5) 0 0 0,
    inset rgba(255,255,255,.08) 0 1.25rem 0,
    inset rgba(0,0,0,.3) 0 -1.25rem 1.25rem,
    inset rgba(255,255,255,.1) 0 1.25rem 1.25rem;
  transition: all .2s linear;
}
.btn-convert {
  background-color: #c75000;
}
.btn-copied {
  background-color: #477343;
  border: 1px solid #242424;
}
.btn-reset {}
[disabled] {
  opacity: 0.25;
  pointer-events: none;
}
              
            
!

JS

              
                var supportsES6=(function(){try{new Function('(a=0)=>a');return true}catch(e){console.log('No ES6');return false}}());



var Convert_Html_Entities = (function (window, document, supportsES6) {

  'use strict';
  if (!supportsES6) return;

  const form = document.querySelector('.frm');
  const label = document.querySelector('.frm_lbl');
  const textArea = document.getElementById('textarea');
  const btnConvert = document.querySelector('.btn-convert');
  const btnReset = document.querySelector('.btn-reset');

  if (!form || !label || !textArea || !btnConvert || !btnReset) return;

  const submit = e => e.preventDefault();

  const initialLabelText = label.innerHTML;

  const replaceHtmlEntities = str => str.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');

  const copy = _ => {
    new ClipboardJS('.btn-convert');
    const btnText = btnConvert.innerHTML;
    btnConvert.innerHTML = btnConvert.getAttribute('data-btn-text');
    btnConvert.classList.add('btn-copied');
    setTimeout(_ => {
      btnConvert.setAttribute('disabled', 'true');
      btnConvert.classList.remove('btn-copied');
      btnConvert.innerHTML = btnText;
      btnReset.removeAttribute('disabled');
    }, 2000);
  };

  const convert = _ => {
    if (textArea.value.length < 1) return;
    textArea.value = replaceHtmlEntities(textArea.value);
    label.textContent = label.getAttribute('data-lbl-text');
    copy();
  };

  const reset = _ => {
    textArea.value = '';
    label.textContent = initialLabelText;
    btnConvert.removeAttribute('disabled');
    btnReset.setAttribute('disabled', 'true');
  };

  form.addEventListener('submit', submit);
  btnConvert.addEventListener('click', convert);
  btnReset.addEventListener('click', reset);

}(window, document, supportsES6));


// Included - Copy to clipboard.js
// https://cdn.jsdelivr.net/npm/clipboard@2/dist/clipboard.min.js


              
            
!
999px

Console