给autoahk.com网站代码框增加一键复制

js初学者代码写的不好，勉强能用，如果纯用油猴的话还能用更简洁的GM_setClipboard，我写的这个如果站长愿意可以直接加载到页面上。

油猴添加自定义脚本，代码如下

// ==UserScript==
// @name         AHK网站复制代码
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  给autoahk网站页面增加复制代码按钮
// @author       usnake
// @match        https://www.autoahk.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=autoahk.com
// @grant        none
// ==/UserScript==

(function(){


    let prettyprinted = document.querySelectorAll('.prettyprinted');
    for(let i=0;i<prettyprinted.length;i++){
        prettyprinted[i].insertAdjacentHTML('beforebegin', `<div style="position:relative;"><div class="copydiv" style="
        color: #9999aa;
        background-color:#3a404a;
        position: absolute;
        top: 14px;
        right: 21px;
        font-size: 12px;
        line-height: 26px;
        padding: 0 8px;
        border-radius: 2px;
        cursor: pointer;
        z-index: 5;
        " onclick="copy_code(this)">复制全部</div></div>`);

    }


    copy_code = function(e){
        let code_str = e.parentElement.nextElementSibling.innerText;
        copyTextToClipboard(code_str);
    }

    function fallbackCopyTextToClipboard() {
        // 1.创建一个可选中元素
        let textArea = document.createElement("textarea");
        textArea.value = window.location.href;
        // 2.使用定位，阻止页面滚动
        textArea.style.top = "0";
        textArea.style.left = "0";
        textArea.style.position = "fixed";
        document.body.appendChild(textArea);
        textArea.focus();
        textArea.select();
        try {
            var successful = document.execCommand('copy');
            var msg = successful ? 'successful' : 'unsuccessful';
            console.log('Fallback: Copying text command was ' + msg);
        } catch (err) {
            console.error('Fallback: Oops, unable to copy', err);
        }
        // 3.移除元素
        document.body.removeChild(textArea);
    }

    function copyTextToClipboard(text) {
        if (!navigator.clipboard) {
            fallbackCopyTextToClipboard(text);
            return;
        }
        navigator.clipboard.writeText(text).then(function() {
            console.log('Async: Copying to clipboard was successful!');
        }, function(err) {
            console.error('Async: Could not copy text: ', err);
        });
    }


})();