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通过右键菜单快速切换 designMode 状态，详见 https://developer.mozilla.org/zh-CN/docs/Web/API/Document/designMode
// ==UserScript==
// @name [DEBUG] Web Content Editing Mode (DesignMode)
// @name:zh-CN [DEBUG] 网页内容编辑模式 (DesignMode)
// @version 1.1.3.20210925
// @namespace laster2800
// @author Laster2800
// @description Quickly turn designMode on/off via the context menu, see https://developer.mozilla.org/en-US/docs/Web/API/Document/designMode
// @description:zh-CN 通过右键菜单快速切换 designMode 状态，详见 https://developer.mozilla.org/zh-CN/docs/Web/API/Document/designMode
// @homepageURL http://greasyfork.icu/zh-CN/scripts/430949
// @supportURL http://greasyfork.icu/zh-CN/scripts/430949/feedback
// @license LGPL-3.0
// @include *
// @grant none
// @run-at context-menu
// ==/UserScript==
(function() {
'use strict'
const target = top.document.designMode === 'on' ? 'off' : 'on'
const executed = new Set()
const exec = win => {
if (executed.has(win)) return
try {
executed.add(win)
win.document.designMode = target
for (let i = 0; i < win.frames.length; i++) {
exec(win.frames[i])
}
} catch { /* cross-origin frame */ }
}
exec(top)
})()