Question

有一个叫做“口袋妖怪摊牌”的口袋妖怪战斗模拟器。客户端是封闭源代码，因此我无法在服务器上添加层。我想编辑最后的战斗下拉列表来添加一层。

我想改变：

<select id="lobby-format" onchange="return rooms['lobby'].formSelectFormat()">
  <option value="randombattle" selected="selected">Random Battle (rated)</option>
  <option value="unratedrandombattle">Unrated Random Battle</option>
  <option value="ou">OU (rated)</option>
  <option value="cap">CAP (rated)</option>
  <option value="ubers">Ubers (rated)</option>
  <option value="uu">UU (rated)</option>
  <option value="ru">RU (rated)</option>
  <option value="nu">NU (rated)</option>
  <option value="lc">LC (rated)</option>
  <option value="hackmons">Hackmons (rated)</option>
  <option value="balancedhackmons">Balanced Hackmons (rated)</option>
  <option value="glitchmons">Glitchmons (rated)</option>
</select>

为：

<select id="lobby-format" onchange="return rooms['lobby'].formSelectFormat()">
  <option value="randombattle" selected="selected">Random Battle (rated) </option>
  <option value="unratedrandombattle">Unrated Random Battle</option>
  <option value="ou">OU (rated)</option>
  <option value="cap">CAP (rated)</option>
  <option value="ubers">Ubers (rated)</option>
  <option value="uu">UU (rated)</option>
  <option value="ru">RU (rated)</option>
  <option value="nu">NU (rated)</option>
  <option value="pu">PU (unrated)</option>
  <option value="lc">LC (rated)</option>
  <option value="bwcup">BW Cup (unrated)</option>
  <option value="hackmons">Hackmons (rated)</option>
  <option value="balancedhackmons">Balanced Hackmons (rated)</option>
  <option value="glitchmons">Glitchmons (rated)</option>
</select>

（在选定的位置插入2 <options>。）

Answer 1

好的，试试看：

var opt = document.createElement("option");

var content = document.createTextNode("PU (unrated)");
opt.appendChild(content);

var attr = document.createAttribute("value");
attr.nodeValue = "pu";
opt.setAttributeNode(attr);

var targetEl = document.getElementById("lobby-format");
targetEl.appendChild(opt);

这将只增加一个选项，但我想你明白了。

Answer 2

这是一个脚本，它使用jQuery的强大功能（经过测试at jsBin）在目标点添加选项：

// ==UserScript==
// @name     _Add new options at select points
// @include  http://play.pokemonshowdown.com/*
// @include  http://jsbin.com/azeveh*
// @require  http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
// ==/UserScript==

var selectNode  = $("#lobby-format");

selectNode  .find ("option[value='nu']")
            .after ('<option value="pu">PU (unrated)</option>');

selectNode  .find ("option[value='lc']")
            .after ('<option value="bwcup">BW Cup (unrated)</option>');

OP的特定网站使用AJAX添加<select>。要补偿AJAX，请使用waitForKeyElements实用程序。像这样：

// ==UserScript==
// @name        _Add new options at select points, AJAX compensated.
// @include     http://jsbin.com/azeveh*
// @include     http://play.pokemonshowdown.com/*
// @require     http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
// @require     https://gist.github.com/raw/2625891/waitForKeyElements.js
// ==/UserScript==

waitForKeyElements ("#lobby-format option[value='nu']", AddOption_1);
waitForKeyElements ("#lobby-format option[value='lc']", AddOption_2);

function AddOption_1 (jNode) {
    jNode.after ('<option value="pu">PU (unrated)</option>');
}

function AddOption_2 (jNode) {
    jNode.after ('<option value="bwcup">BW Cup (unrated)</option>');
}

如何使用Greasemonkey编辑HTML <select>元素？</select>

2 个答案: