如何在加载页面时使插件运行函数

Question

我正在开发一个firefox插件，我希望它在每个表单字段上添加一个事件监听器。我该如何实现呢。

Answer 1

// 'extension is loaded', you probably have this
window.addEventListener("load", function() {
    // run your_function() when page is loaded and DOM is ready
    gBrowser.addEventListener("DOMContentLoaded", your_function, true);
}, false);