JSFiddle - React, Tailwind, and code Playground

by Kikketer

HTML

<body contextmenu="share">   
<h4>Context Menu Test</h4>
    
  <menu type="context" id="share">
    <menu label="share">
      <menuitem label="Twitter" onclick="window.open('https://twitter.com/intent/tweet?text=Hurray! I am learning ContextMenu from MDN via Mozilla');"></menuitem>
      <menuitem label="Facebook" onclick="window.open('https://facebook.com/sharer/sharer.php?u=https://https://developer.mozilla.org/en/HTML/Element/Using_HTML_context_menus');"></menuitem>
    </menu>
  </menu>
  <ol>
    <li>Anywhere in the example you can share the page on Twitter and Facebook using the Share menu from your context menu.</li>
    <li><pre contextmenu="changeFont" id="fontSizing">On this specific list element, you can change the size of the text by using the "Increase/Decrease font" actions from your context menu</pre></li>
    <menu type="context" id="changeFont">
      <menuitem label="Increase Font" onclick="incFont()"></menuitem>
      <menuitem label="Decrease Font" onclick="decFont()"></menuitem>
    </menu>
    <li contextmenu="ChangeImage" id="changeImage">On the image below, you can fire the "Change Image" action in your Context Menu.</li><br />
    <img src="https://developer.mozilla.org/media/img/promote/promobutton_mdn5.png" contextmenu="ChangeImage" id="promoButton" />
    <menu type="context" id="ChangeImage">
      <menuitem label="Change Image" onclick="changeImage()"></menuitem>
    </menu>
  </ol>
    
</body>

JavaScript

function incFont(){
  document.getElementById("fontSizing").style.fontSize="larger";
}
function decFont(){
  document.getElementById("fontSizing").style.fontSize="smaller";
}
function changeImage(){
  var j = Math.ceil((Math.random()*39)+1);
  document.images[0].src="https://developer.mozilla.org/media/img/promote/promobutton_mdn" + j + ".png";
}