YouTube回放Chrome扩展程序 [英] Youtube Playback Chrome Extension
本文介绍了YouTube回放Chrome扩展程序的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我不明白为什么它不能正常工作.
I cannot understand why this isn't working.
我已经检查了Google扩展名 dev文档，检查了一些示例代码.
I have checked the google extension dev docs, checked some sample code.
检查了其他stackoverflow问题/答案，而没有来自测试的任何正面反馈/结果.
Checked other stackoverflow Question/Answers without any positive feedback/results from testing.
此扩展程序非常简单
This extension is very simple
- 它显示弹出窗口，其中包含输入文本字段和按钮
- 单击它会通过 postMessage 将消息发送到内容脚本，以更新 document.getElementsByTagName("video")[0] .playbackRate
- 这将调整youtube或其他受支持的(未来冒险)视频 播放速度超出或低于默认值0.25、0.50、1、1.25、1.50、2或精确到1.4390之类的值
- 比使用所述控制台+ devtools等更容易，更快.这可以加快初始设置的速度...
- It displays a popup with an input text field and a button
- on clicking it will send a message to the content script via postMessage to update the document.getElementsByTagName("video")[0].playbackRate
- this will adjust youtubes or other supported (future venture) Video Playback Speed beyond or lower than the default of 0.25, 0.50, 1, 1.25, 1.50, 2 or to an exact value like 1.4390
- Easier and faster than using said console + devtools, etc..which speeds up the initial setup...
请帮助:)
manifest.json
{
"manifest_version": 2,
"name": "Youtube Playback",
"version": "1.0",
"description": "Manage Playback Speed With Any Value",
"homepage_url": "https://github.com/DeanVanGreunen",
"permissions": [
"tabs",
"activeTab"
],
"browser_action": {
"icon": "icon.png",
"default_icon": "icon.png",
"title": "Youtube Playback",
"default_title": "Youtube Playback",
"popup": "popup.html",
"default_popup": "popup.html"
},
"content_scripts": [
{
"matches": [
"<all_urls>"
],
"js": ["content.js"]
}
]
}
popup.html
<script>
function setPlaybackSpeed(speed){
chrome.tabs.query({currentWindow: true, active: true}, function (tabs){
var activeTab = tabs[0];
chrome.tabs.sendMessage(activeTab.id, {action: "setPlaybackSpeed", "speed": speed});
});
}
</script>
<div>
<input id="text_playbackspeed" type="text" style="" placeholder="1" value="1"/>
<button id="btn_updateplaybackspeed" style="">Update</button>
</div>
content.js
chrome.runtime.onMessage.addListener(
function(request, sender, sendResponse) {
if( request.action === "setPlaybackSpeed" ) {
document.getElementsByTagName("video")[0].playbackRate = request.playback_speed;
}
return true;
}
);
推荐答案
这是有效的解决方案(虽然有一段时间，但是您可以在这里忘了更新此线程)
Here is the working solution (its being a while however here you go, I forgot to update this thread)
此扩展程序非常简单
- 它显示带有输入文本字段和按钮的弹出窗口
- 点击它会向内容脚本发送一条消息
- 通过postMessage更新文档.getElementsByTagName(视频")[0] .playbackRate
- 这将调整youtube或其他受支持的(未来冒险)视频播放
- 使用4来超出或低于默认速度0.25、0.50、1、1.25、1.50、2或最高4倍的原始速度
- 精确值，例如1.4390
- 比使用所述控制台+ devtools等更容易，更快.这可以加快初始设置的速度...
项目回购托管在Github上:
或通过以下方式获取最新版本:
或在下面查看最新的文件:
manifest.json
{
"manifest_version": 2,
"name": "Youtube Playback",
"version": "1.0",
"description": "Manage Playback Speed With Any Value",
"homepage_url": "https://keybase.io/DeanVanGreunen",
"repo_url": "https://github.com/DeanVanGreunen/YT_SpeedMeUpExtension",
"permissions": [
"tabs",
"activeTab"
],
"icons": {
"128": "icon.png"
},
"browser_action": {
"default_icon": {
"128": "icon.png"
},
"default_title": "Youtube Playback",
"default_popup": "popup.html"
},
"content_scripts": [
{
"matches": [
"<all_urls>"
],
"js": ["content.js"]
}
]
}
popup.html
<style>
#text_playbackspeed {
padding: 2px;
margin-bottom: 4px;
}
#leButtons, #findsMe {
padding: 4px 8px;
text-align: center;
margin:0px auto;
}
#findsMe img{
display: block;
margin: 0 auto;
width: 69px;
height: 69px;
}
</style>
<div>
<input id="text_playbackspeed" type="text" style="" placeholder="1" value="1"/>
<div id="leButtons">
<button id="btn_updateplaybackspeed_minus" style="">-1</button>
<button id="btn_updateplaybackspeed" style="">Update</button>
<button id="btn_updateplaybackspeed_add" style="">+1</button>
</div>
</div>
<div id="findsMe">
<img src="https://avatars0.githubusercontent.com/u/22296075" alt="The Developer" />
<a target="_blank" href="https://keybase.io/DeanVanGreunen">Find me</a>
</div>
<script type="text/javascript" src="popup.js"></script>
popup.js
function setPlaybackSpeed(speed){
chrome.tabs.query({currentWindow: true, active: true}, function (tabs){
var activeTab = tabs[0];
chrome.tabs.sendMessage(activeTab.id, {action: "setPlaybackSpeed", "speed": speed});
});
}
function getPlaybackSpeed(){
chrome.tabs.query({currentWindow: true, active: true}, function (tabs){
var activeTab = tabs[0];
chrome.tabs.sendMessage(activeTab.id, {action: "getPlaybackSpeed"});
});
}
chrome.runtime.onMessage.addListener(
function(request, sender, sendResponse) {
if(sender.tab){
if( request.action == "returnPlaybackSpeed" ) {
document.getElementById('text_playbackspeed').value = request.speed;
}
}
}
);
document.getElementById('btn_updateplaybackspeed_minus').addEventListener('click', function(event) {
var num = parseFloat(document.getElementById('text_playbackspeed').value)-1;
document.getElementById('text_playbackspeed').value = num;
});
document.getElementById('btn_updateplaybackspeed_add').addEventListener('click', function(event) {
var num = parseFloat(document.getElementById('text_playbackspeed').value)+1;
document.getElementById('text_playbackspeed').value = num;
});
document.getElementById('btn_updateplaybackspeed').addEventListener('click', function(event) {
setPlaybackSpeed(document.getElementById('text_playbackspeed').value);
});
getPlaybackSpeed();
content.js
chrome.runtime.onMessage.addListener(
function(request, sender, sendResponse) {
if(!sender.tab){
if( request.action == "getPlaybackSpeed" ) {
chrome.runtime.sendMessage({action: "returnPlaybackSpeed", speed: document.getElementsByTagName("video")[0].playbackRate}, function(){});
} else if( request.action == "setPlaybackSpeed" ) {
document.getElementsByTagName("video")[0].playbackRate = request.speed;
}
}
}
);
icon.png
这篇关于YouTube回放Chrome扩展程序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！
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