If you would like to add a button to your fenced code blocks so that users may copy the code, you can do so in Docusaurus. You will have to add some code to your Docusaurus project, as seen below.
Under static/js
, create a file called code-block-buttons.js
with the following:
// Turn off ESLint for this file because it's sent down to users as-is.
/* eslint-disable */
window.addEventListener('load', function() {
function button(label, ariaLabel, icon, className) {
const btn = document.createElement('button');
btn.classList.add('btnIcon', className);
btn.setAttribute('type', 'button');
btn.setAttribute('aria-label', ariaLabel);
btn.innerHTML =
'<div class="btnIcon__body">' +
icon +
'<strong class="btnIcon__label">' +
label +
'</strong>' +
'</div>';
return btn;
}
function addButtons(codeBlockSelector, btn) {
document.querySelectorAll(codeBlockSelector).forEach(function(code) {
code.parentNode.appendChild(btn.cloneNode(true));
});
}
const copyIcon =
'<svg width="12" height="12" viewBox="340 364 14 15" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" d="M342 375.974h4v.998h-4v-.998zm5-5.987h-5v.998h5v-.998zm2 2.994v-1.995l-3 2.993 3 2.994v-1.996h5v-1.995h-5zm-4.5-.997H342v.998h2.5v-.997zm-2.5 2.993h2.5v-.998H342v.998zm9 .998h1v1.996c-.016.28-.11.514-.297.702-.187.187-.422.28-.703.296h-10c-.547 0-1-.452-1-.998v-10.976c0-.546.453-.998 1-.998h3c0-1.107.89-1.996 2-1.996 1.11 0 2 .89 2 1.996h3c.547 0 1 .452 1 .998v4.99h-1v-2.995h-10v8.98h10v-1.996zm-9-7.983h8c0-.544-.453-.996-1-.996h-1c-.547 0-1-.453-1-.998 0-.546-.453-.998-1-.998-.547 0-1 .452-1 .998 0 .545-.453.998-1 .998h-1c-.547 0-1 .452-1 .997z" fill-rule="evenodd"/></svg>';
addButtons(
'.hljs',
button('Copy', 'Copy code to clipboard', copyIcon, 'btnClipboard'),
);
const clipboard = new ClipboardJS('.btnClipboard', {
target: function(trigger) {
return trigger.parentNode.querySelector('code');
},
});
clipboard.on('success', function(event) {
event.clearSelection();
const textEl = event.trigger.querySelector('.btnIcon__label');
textEl.textContent = 'Copied';
setTimeout(function() {
textEl.textContent = 'Copy';
}, 2000);
});
});
Under static/css
, create a file called code-block-buttons.css
and add the following:
/* "Copy" code block button */
pre {
position: relative;
}
pre .btnIcon {
position: absolute;
top: 4px;
z-index: 2;
cursor: pointer;
border: 1px solid transparent;
padding: 0;
color: #fff;
background-color: transparent;
height: 30px;
transition: all .25s ease-out;
}
pre .btnIcon:hover {
text-decoration: none;
}
.btnIcon__body {
align-items: center;
display: flex;
}
.btnIcon svg {
fill: currentColor;
margin-right: .4em;
}
.btnIcon__label {
font-size: 11px;
}
.btnClipboard {
right: 10px;
}
Add the following to siteConfig.js
:
scripts: [
'https://buttons.github.io/buttons.js',
'https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.0/clipboard.min.js',
'/js/code-block-buttons.js',
],
stylesheets: ['/css/code-block-buttons.css']
Your "Copy" to clipboard buttons should now appear at the upper right of every fenced code block.
@steve-aerospike unless you're still using Docusaurus 1, this snippet is likely irrelevant.
That said, it probably can be done on a per code basis. You can add some flags or special code to your code blocks (implementation will be up to you) and customize the script to only add the copy button if the flag is not present.