自动切换输出语言
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// ==UserScript==
// @name Google翻译自动中英互译
// @description 自动切换输出语言
// @namespace https://greasyfork.org/users/197529
// @author kkocdko
// @license Unlicense
// @version 0.6
// @include *://translate.google.cn/*
// ==/UserScript==
'use strict'
const sourceTextEl = document.querySelector('#source')
const sourceLangEl = document.querySelector('.sl-selector a')
window.location.hash = '#view=home&op=translate&sl=auto&tl=en&text=' + sourceTextEl.value
autoSwitchTargetLang()
sourceLangEl.addEventListener('DOMSubtreeModified', autoSwitchTargetLang)
function autoSwitchTargetLang () {
if (sourceTextEl.value === '') {
return
}
const isEnglish = sourceLangEl.textContent === '检测到英语'
const rightValue = isEnglish ? 'tl=zh-CN' : 'tl=en'
const leftValue = isEnglish ? 'tl=en' : 'tl=zh-CN'
if (window.location.hash.indexOf(rightValue)) {
window.location.hash = window.location.hash.replace(rightValue, leftValue)
}
window.location.hash = window.location.hash.replace(leftValue, rightValue)
}