如何在镀铬扩展中播放声音 [英] How can i play sound in a chrome extension

问题描述

我想在镀铬扩展中播放声音。我该怎么做？我应该在 myscript.js 文件中写什么？

I would like to play sound in chrome extension. How can I do it? What should I write in myscript.js file?

我试着用myscript.js写：

I tried to write in myscript.js:

var audio = new Audio("alarm.wav");
audio.play();

和：

document.write('<audio id="player" src="alarm.wav" >');
document.getElementById('player').play();

但不起作用。我没有添加更多内容，因此没有未实现的条件。

but it does not work. I did not add anything more, so there are no unfulfilled conditions.

我的manifest.json文件：

My manifest.json file:

{
  "name": "Alarm",
  "version": "1.0.0",
  "icons": {"64": "icon64.png"},
  "permissions": [
    "http://site1/",
    "http://site2/"
  ],
  "content_scripts": [
    {
      "matches": ["http://site1/", "http://site2/"],
      "js": ["myscript.js"],
      "run_at": "document_end"
    }
  ],
  "manifest_version": 2
}

如果我在myscript.js文件中添加按钮到站点，这个按钮效果很好，但是我无法播放声音。我的音频文件是mp3，与manifest.json和myscript.js在同一文件夹中，我的myscript.js是：

If I add button to site in myscript.js file, this button works well, but i can't play sound. My audio file is mp3 and is in the same folder as manifest.json and myscript.js, and my myscript.js is:

var myAudio = new Audio();
myAudio.src = "alarm.mp3";
myAudio.play();

推荐答案

使用JavaScript播放声音/音乐的最简单方法是使用音频对象：您只需要在扩展文件夹中放置要播放的文件，就可以这样播放：

The easiest way to play some sound/music using JavaScript is by using an Audio object: you just need to have the file you want to play inside your extension folder, and you can play it like this:

var myAudio = new Audio(chrome.runtime.getURL("path/to/file.mp3"));
myAudio.play();

您可以使用 play（）进行游戏，暂停使用 pause（）。

You can play using play() and pause using pause().

请记住，如果你想在内容脚本（或任何地方）播放声音否则不在 chrome：// extension URL下，你必须在 web_accessible_resources 清单字段：

Remember that if you want to play the sound in a content script (or anywhere else that is not under a chrome://extension URL) you'll have to declare the audio file in the web_accessible_resources manifest field:

"web_accessible_resources": [
    "path/to/file.mp3"
]

---

工作示例

您可以下载我从 此处 即可。当您单击stackoverflow.com页面内的任何内容时，它会通过内容脚本播放声音。

---

Working example

You can download a test extension I made from HERE. It plays a sound through a content script when you click anything inside a stackoverflow.com page.

这篇关于如何在镀铬扩展中播放声音的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！