复制网页内容为Markdown格式。点击右上角copy按钮开始选择内容，点击鼠标或按Enter进行复制，按Esc取消选择。按钮可以拖动。
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// ==UserScript==
// @name 复制为Markdown格式
// @namespace https://github.com/nameldk/user-script
// @version 0.2.3
// @description 复制网页内容为Markdown格式。点击右上角copy按钮开始选择内容，点击鼠标或按Enter进行复制，按Esc取消选择。按钮可以拖动。
// @author nameldk
// @require https://unpkg.com/turndown/dist/turndown.js
// @match https://*/*
// @match http://*/*
// @grant none
// ==/UserScript==
(function () {
'use strict';
const CLASS_HINT = "_myhint_";
let $curElement = null;
let $btn = document.createElement("div");
let turndownService = new TurndownService();
let isHold = 0,
isDrag = 0;
function addStyle(css) {
let s = document.createElement("style");
s.type = "text/css";
s.textContent = css;
document.body.prepend(s);
}
function showHint($this) {
$this.classList.add(CLASS_HINT);
}
function hideHint($this) {
$this.classList.remove(CLASS_HINT);
}
function handleMouseover(e) {
let $target = e.target;
$curElement = $target;
showHint($target);
}
function handleMouseout(e) {
let $target = e.target;
hideHint($target);
}
function handleKeyup(e) {
if (e.keyCode === 13) {
process(e);
return false;
} else if (e.keyCode === 27) {
disable();
}
}
function handleClick(e) {
process(e);
return false;
}
function process(e) {
if ($curElement) {
e.preventDefault();
copyIt($curElement);
disable();
showTips();
}
}
function showTips() {
let t = document.createElement("div");
t.style.position = "fixed";
t.style.width = "80px";
t.style.height = "24px";
t.style.lineHeight = "24px";
t.style.top = "10px";
t.style.right = "50%";
t.style.background = "#68af02";
t.style.fontSize = "14px";
t.style.color = "#fff";
t.style.textAlign = "center";
t.style.borderRadius = "5px";
t.style.marginLeft = "300px";
t.style.zIndex = 10000;
t.innerHTML = "复制成功";
document.body.prepend(t);
setTimeout(function () {
document.body.removeChild(t);
}, 1000);
}
function copyIt($curElement) {
if ($curElement) {
let html = $curElement.innerHTML;
html = html.replace(/(<img.+?src=")(\/.+?")/gi, "$1" + document.location.origin + "$2")
.replace(/(<a.+?href=")([\/#].*?")(.*?<\/a>)/gi, function(match, p1, p2, p3){
return p1 + (p2[0] === '/' ? document.location.origin : location.href.replace(/#.*/,"")) + p2 + p3;
});
let markdown = turndownService.turndown(html);
markdown = markdown.replace(/<img.+?>/g, "");
copyToClipboard(markdown);
}
}
function copyToClipboard(text) {
const input = document.createElement('textarea');
input.style.position = 'fixed';
input.style.opacity = 0;
input.value = text;
document.body.appendChild(input);
input.select();
let res = document.execCommand('Copy');
document.body.removeChild(input);
return res;
}
function enable() {
document.addEventListener("mouseover", handleMouseover);
document.addEventListener("mouseout", handleMouseout);
document.addEventListener("click", handleClick);
document.addEventListener("keyup", handleKeyup);
}
function disable() {
if ($curElement) {
hideHint($curElement);
$curElement = null;
}
document.removeEventListener("mouseover", handleMouseover);
document.removeEventListener("mouseout", handleMouseout);
document.removeEventListener("click", handleClick);
document.removeEventListener("keyup", handleKeyup);
$btn.style.display = "block";
}
function initBtn() {
let topDiff = 0,
leftDiff = 0;
$btn.style.position = "fixed";
$btn.style.width = "44px";
$btn.style.height = "22px";
$btn.style.lineHeight = "22px";
$btn.style.top = "14%";
$btn.style.right = "1%";
$btn.style.background = "#0084ff";
$btn.style.fontSize = "14px";
$btn.style.color = "#fff";
$btn.style.textAlign = "center";
$btn.style.borderRadius = "6px";
$btn.style.zIndex = 10000;
$btn.style.cursor = "pointer";
$btn.style.opacity = 0.1;
$btn.innerHTML = "copy";
$btn.addEventListener("click", function () {
if (isDrag) {
return false;
}
enable();
this.style.display = "none";
});
$btn.addEventListener("mouseover", function (e) {
this.style.opacity = 1;
});
$btn.addEventListener("mouseout", function () {
this.style.opacity = 0.1;
});
$btn.addEventListener("mousedown", function (e) {
isHold = 1;
leftDiff = e.pageX - this.offsetLeft;
topDiff = e.pageY - this.offsetTop;
$btn.onmousemove = function (e) {
if (isHold) {
isDrag = 1;
}
if (isDrag) {
this.style.top = (e.pageY - topDiff) + "px";
this.style.left = (e.pageX - leftDiff) + "px";
this.style.right = "auto";
}
};
});
document.addEventListener("mouseup", function () {
setTimeout(function () {
isHold = 0;
isDrag = 0;
$btn.onmousemove = null;
}, 0);
});
}
function init() {
if (!document.body) {
console.warn("no body");
return;
}
addStyle("." + CLASS_HINT + "{border:1px solid blue}");
document.body.prepend($btn);
initBtn();
}
init();
})();