grease monkey 猴油脚本 chrome jquery

// ==UserScript==

// @name         jQuery For Chrome (A Cross Browser Example)

// @namespace    jQueryForChromeExample

// @include      *

// @author       Erik Vergobbi Vold & Tyler G. Hicks-Wright

// @description  This userscript is meant to be an example on how to use jQuery in a userscript on Google Chrome.

// ==/UserScript==

// a function that loads jQuery and calls a callback function when jQuery has finished loading

function addJQuery(callback) {

  var script = document.createElement("script");

  script.setAttribute("src", "//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js");

  script.addEventListener('load', function() {

    var script = document.createElement("script");

    script.textContent = "(" + callback.toString() + ")();";

    document.body.appendChild(script);

  }, false);

  document.body.appendChild(script);

}

// the guts of this userscript

function main() {

  alert("There are " + $('a').length + " links on this page.");

}

// load jQuery and execute the main function

addJQuery(main);