// ==UserScript==
// @name         QuickSearch
// @name:zh-CN   QuickSearch
// @namespace    https://github.com/zitup
// @version      1.0.3
// @description  Use '/' to quickly focus on the search input
// @description:zh-cn 按 `'/'` 键快速聚焦并滚动到搜索输入框处。
// @author       zitup
// @homepage     https://github.com/zitup/quick-search
// @include      *
// @exclude      https://www.google.com/*
// @exclude      https://www.google.com.hk/*
// @exclude      https://github.com/*
// @exclude      https://developer.mozilla.org/*
// @icon         https://www.google.com/s2/favicons?domain=w3.org
// @grant        none
// @license      MIT
// ==/UserScript==
(function() {
'use strict';
// 监听键盘输入 '/' 搜索
document.addEventListener('keydown', (e) => {
if (
e.key === '/' &&
!e.metaKey &&
!e.ctrlKey &&
!["TEXTAREA", "INPUT"].includes(e.target.tagName)
) {
main()
}
})
function main() {
// 选择第一个 type 为 search 或存在 autofocus 且在页面显示的
const autofocusOrSearch = document.querySelector('input[autofocus],input[type=search]')
if (autofocusOrSearch && isVisible(autofocusOrSearch)) {
focusAndScrollIntoView(autofocusOrSearch)
return
}
// 选择第一个 id/class 中包含[search]关键词且在页面显示的
const idOrClassContainSearch = document.querySelectorAll('input[id*=search],input[class*=search]')
if (idOrClassContainSearch.length) {
const element = findInNodeList(idOrClassContainSearch)
if (element) {
focusAndScrollIntoView(element)
return
}
}
// 选择第一个 placeholder 中包含[search/搜索]关键词且在页面显示的
const placeholderContainSearch = document.querySelectorAll('input[placeholder*=search],input[placeholder*=搜索]')
if (placeholderContainSearch.length) {
const element = findInNodeList(placeholderContainSearch)
if (element) {
focusAndScrollIntoView(element)
return
}
}
// 选择第一个在页面显示的
const textInputTypes = ['hidden', 'button', 'checkbox', 'color', 'file', 'image', 'radio', 'range', 'reset', 'submit']
const selector = textInputTypes.map(t => `[type=${t}]`).join(',')
const firstInput = document.querySelector(`input:not(${selector})`)
if (firstInput && isVisible(firstInput)) {
focusAndScrollIntoView(firstInput)
return
}
}
// 判断 NodeList 中是否有可用的
function findInNodeList(list) {
return [].find.call(list, (item) => isVisible(item))
}
// 判断元素是否可见
function isVisible(element) {
const style = getComputedStyle(element)
return (
!!element.getClientRects().length &&
style.visibility !== 'hidden' &&
style.width !== 0 &&
style.height !== 0 &&
style.opacity !== 0
)
}
// 聚焦元素并滚动到视野
function focusAndScrollIntoView(element) {
event.preventDefault();
const pos = element.value.length;
element.setSelectionRange(pos, pos)
element.focus()
window.scrollTo({top: element.getBoundingClientRect().top + window.pageYOffset - 100, behavior: 'smooth'});
}
})();