如何使用Firefox Addon Builder记录所选文本？(How can I log selected text with Firefox Addon Builder?)

 我已经按照几个教程没有成功。 我认为这是典型的例子，但我无法使其发挥作用。 我可以保存我的项目，安装插件，当我选择一些文本时，我可以看到上下文菜单项“日志选择”，但是当我点击它时没有任何反应。 
 
exports.main = function() {

    var contextMenu = require("context-menu");
    var request = require("request");
    var selection = require("selection");

    var menuItem = contextMenu.Item({
        label: "Log Selection",
        context: contextMenu.SelectionContext(),
        contentScript: 'self.on("click", function () {' +
                 '  var text = window.getSelection().toString();' +
                 '  self.postMessage(text);' +
                 '});',
        onMessage: function (selectionText) {
            alert(selectionText);
        }
    });
}
 
 即使我的插件只包含一个警报，也会安装插件，但不会显示警报。 
 
exports.main = function() {
       alert("Hello world");
}
 
 额外信息： 
 
 
 
 SDK：1.14（最新） 
 
 
 附加构建器助手：1.7（最新） 
 
 
 在Builder网页上添加： https ： //builder.addons.mozilla.org 
 

I have followed several tutorials with no success. I think this is the classic example but I can't make it work. I can save my project, install the addon and I can see the context menu item "Log Selection" when I select some text, but when I click on it nothing happens.
 
exports.main = function() {

    var contextMenu = require("context-menu");
    var request = require("request");
    var selection = require("selection");

    var menuItem = contextMenu.Item({
        label: "Log Selection",
        context: contextMenu.SelectionContext(),
        contentScript: 'self.on("click", function () {' +
                 '  var text = window.getSelection().toString();' +
                 '  self.postMessage(text);' +
                 '});',
        onMessage: function (selectionText) {
            alert(selectionText);
        }
    });
}
 
Even if my addon contains only one alert, the addon is installed but the alert is not shown.
 
exports.main = function() {
       alert("Hello world");
}
 
Extra info:
 
 
 
SDK: 1.14 (up to date) 
 
 
Add-on Builder Helper: 1.7 (up to date) 
 
 
Add On Builder Webpage: https://builder.addons.mozilla.org
 

原文：https://stackoverflow.com/questions/18233888