hugo-theme-flat/static/js/copy-code-block.js

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JavaScript
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/*
* Every codeblock has "pre > code" structure, some highlighted codeblocks have
* "div.highlight > pre.chroma > code" structure. So, use the simple CSS selector
* to query all codeblocks.
*/
document.addEventListener("DOMContentLoaded",
() => {
var codeblocks = document.querySelectorAll(".single .content pre code");
console.log("codeblocks length:", codeblocks.length);
codeblocks.forEach(
(codeblock) => {
let elementPre = codeblock.parentElement;
let button = document.createElement("div");
button.classList.add("copyCodeButton");
button.innerHTML = "copy";
button.addEventListener("click",
() => {
navigator.clipboard.writeText(codeblock.textContent);
button.innerHTML = "copied!";
setTimeout(
() => { button.innerHTML = "copy"; },
1000
);
}
);
elementPre.appendChild(button);
}
);
}
);