javascript – Greasemonkey的简单替代品

除了Firefox的Greasemonkey或Chrome的自动运行用户JS的用户脚本之外,没有更简单的替代方案.你可以 write your own extension/add-on,但没有多大意义.

如果你不关心GM和用户脚本提供的强大的额外功能,并且总是希望在某个站点的页面加载后“(接受)几行JS和(运行)它们” – 忽略iframe,那么只是使用以下代码作为所有脚本的基本模板：

// ==UserScript==
// @name    _Base template for simple,cross-browser,JS injection.
// @match   *://YOUR_SERVER.COM/YOUR_PATH/*
// @run-at  document-start
// ==/UserScript==

if (window.top != window.self)  //-- Don't run on frames or iframes.
    return;


function scriptMain () {
    // PUT ALL OF YOUR CODE HERE,INCLUDING ANY FUNCTIONS YOU CREATE.
    console.log ("Hello World!");
}

window.addEventListener ("load",scriptMainLoader,falsE);

function scriptMainLoader () {
    addJS_Node (null,null,scriptMain);
}

function addJS_Node (text,s_URL,funcToRun) {
    var D                                   = document;
    var scriptNode                          = D.createElement ('script');
    scriptNode.type                         = "text/javascript";
    if (text)       scriptNode.textContent  = text;
    if (s_URL)      scriptNode.src          = s_URL;
    if (funcToRun)  scriptNode.textContent  = '(' + funcToRun.toString() + ')()';

    var targ = D.getElementsByTagName ('head')[0] || D.body || D.documentElement;
    targ.appendChild (scriptNodE);
}

请注意,@ run-at document-start是必需的(对于Chrome),但您的代码仍将在文档加载时触发.