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Derpibooru - Sort-by-Score Button

Adds a button to automatically sort by score after a search. Also, remove pointless scope stuff from URLs.

当前为 2020-01-02 提交的版本，查看 最新版本。

// ==UserScript==
// @name        Derpibooru - Sort-by-Score Button
// @namespace   Selbi
// @version     2.0.2
// @include     http*://*derpiboo.ru/tags*
// @include     http*://*derpibooru.org/tags*
// @include     http*://*derpiboo.ru/search*
// @include     http*://*derpibooru.org/search*
// @grant       none
// @description Adds a button to automatically sort by score after a search. Also, remove pointless scope stuff from URLs.
// ==/UserScript==

const TARGET_SCORE = "score";
const TARGET_DESCENDING = "desc";

let sortButtonIcon = document.createElement("i");
sortButtonIcon.classList = "fas fa-sort-amount-down";
Object.assign(sortButtonIcon.style, {
  width: "28px",
  textAlign: "center"
});

let sortButton = document.createElement("a");
sortButton.classList = "header__search__button";
sortButton.title = "Sort by descending score";
sortButton.onclick = function() {
  let sortDropdown = document.querySelector("#search_sf");
  sortDropdown.selectedIndex = findOptionIndex(sortDropdown, TARGET_SCORE);
  
  let orderDropdown = document.querySelector("#search_sd");
  orderDropdown.selectedIndex = findOptionIndex(orderDropdown, TARGET_DESCENDING);
  
  document.querySelector(".field > button:first-child").click();
};

sortButton.appendChild(sortButtonIcon);
document.querySelector(".header__search").appendChild(sortButton);


function findOptionIndex(elem, value) {
	let options = elem.getElementsByTagName("option");
  let index = 0;
  for (o of options) {
    if (o.value == value) {
    	return index; 
    }
    index++;
  }
  return -1;
}