Tabs 在Firefox插件中,完成选项卡';s内容脚本触发器选项卡';s";准备好了吗;事件
在a中,完成“我的选项卡”内容脚本中的任何事件处理程序都会触发选项卡的“就绪”事件 我试图弄清楚是否可以使用内容脚本来更改选项卡的内容(该选项卡最初包含一个HTML文件,存储在加载项的Tabs 在Firefox插件中,完成选项卡';s内容脚本触发器选项卡';s";准备好了吗;事件,tabs,firefox-addon,firefox-addon-sdk,content-script,Tabs,Firefox Addon,Firefox Addon Sdk,Content Script,在a中,完成“我的选项卡”内容脚本中的任何事件处理程序都会触发选项卡的“就绪”事件 我试图弄清楚是否可以使用内容脚本来更改选项卡的内容(该选项卡最初包含一个HTML文件,存储在加载项的data文件夹中),然后重新访问选项卡进行进一步修改。不幸的是,选项卡中的页面似乎恢复为原始HTML文件(如data/demo.js中第6行的输出所示),并重新附加内容脚本 lib/main.js: exports.main = function() { var data = require("sdk/s
data
文件夹中),然后重新访问选项卡进行进一步修改。不幸的是,选项卡中的页面似乎恢复为原始HTML文件(如data/demo.js
中第6行的输出所示),并重新附加内容脚本
lib/main.js
:
exports.main = function() {
var data = require("sdk/self").data;
// Create a widget that will open a tab:
require("sdk/widget").Widget({
id: "listener",
label: "listener demo",
content: "?",
onClick: function() {
// Open tab:
require("sdk/tabs").open({
url: data.url("demo.html"),
onReady: function(tab) {
var worker = tab.attach({
// Content script is re-run following EITHER button
// being pressed (whether or not 'demo' event listener
// is activated):
contentScriptFile: data.url("demo.js")
});
worker.port.on("demo-dun", function(message) {
// This message is output following pressing button
// with listener attached by content script:
console.log("'demo-dun' emitted message '" +
message + "'");
});
// Sample text below is received by content script every
// time content script is run, which is to say, every time
// either button is pressed.
worker.port.on("initialized", function () {
worker.port.emit("demo", "sample text");
});
}
});
}
});
};
data/demo.html
(选项卡的内容
):
用于更换,它将正常工作。(或将type=“button”添加到)因为在firefox中,'s type的默认值是submit
<!DOCTYPE HTML>
<head>
<meta http-equiv="Content-type" content="text/html; charset=UTF-8">
<title>Listner demo</title>
</head>
<!-- The content script will remove the class from the body element. -->
<body class="uninitialized">
<form>
<!-- The following button has a click listener from the start -->
<button onclick="alert('hard coded event listener')">press me for hard-coded event listener</button>
<!-- An event listener will be added to the following button by the content script -->
<button id="demo">press me for event listener attached by content script</button>
</form>
</body>
</html>
// content script is re-entered after pressing either button:
alert("entered content script");
// "initialized" event will be emitted once for each tab, IN THEORY.
bodyClasses = document.body.classList;
console.log("body classes: "+JSON.stringify(bodyClasses));
if (bodyClasses.contains("uninitialized")) {
bodyClasses.remove("uninitialized");
self.port.emit("initialized");
}
document.getElementById("demo").addEventListener("click", function() {
alert("event listener added by content script");
self.port.emit("demo-dun", "demo dun");
});
self.port.on("demo", function(text) {
alert("'demo' event listener called with message '" + text + "'");
});