我正在使用iframe YouTube API,我希望跟踪事件,例如,当用户启动和停止视频时,将数据发送到Google Analytics。
<iframe src="https://www.youtube.com/embed/DjB1OvEYMhY"></iframe>
我看了https://developers.google.com/youtube/iframe_api_reference?csw=1并没有找到如何做到这一点的示例。该示例创建iframe并定义onReady和onStateChange。当我只在页面上使用iframe时,我该怎么做?
答案 0 :(得分:13)
此示例使用onPlayerStateChange
使用不同的states来监听用户所做的每个播放/暂停操作,并打印(记录)它们。
但是,您需要创建自己的record
函数,以便根据此数据执行任何操作。
您还需要在iframe上使用ID(在本例中为 #player ),并在其网址末尾添加?enablejsapi = 1 。当然,请确保包含Youtube iframe API。
注意强>
在代码之后声明API非常重要,因为它在准备好后会调用onYouTubeIframeAPIReady
。
<!DOCTYPE html>
<html>
<body>
<iframe id="player" src="https://www.youtube.com/embed/DjB1OvEYMhY?enablejsapi=1"></iframe>
<h5>Record of user actions:</h5>
<script>
var player;
function onYouTubeIframeAPIReady() {
player = new YT.Player( 'player', {
events: { 'onStateChange': onPlayerStateChange }
});
}
function onPlayerStateChange(event) {
switch(event.data) {
case 0:
record('video ended');
break;
case 1:
record('video playing from '+player.getCurrentTime());
break;
case 2:
record('video paused at '+player.getCurrentTime());
}
}
function record(str){
var p = document.createElement("p");
p.appendChild(document.createTextNode(str));
document.body.appendChild(p);
}
</script>
<script src="https://www.youtube.com/iframe_api"></script>
</body>
</html>
答案 1 :(得分:1)
这是不使用Youtubes iframe API脚本的版本。唯一的缺点是iframe API可能会更改。
<iframe id="player" src="https://www.youtube.com/embed/dQw4w9WgXcQ?enablejsapi=1"></iframe>
var addYoutubeEventListener = (function() {
var callbacks = [];
var iframeId = 0;
return function (iframe, callback) {
// init message listener that will receive messages from youtube iframes
if(iframeId === 0) {
window.addEventListener("message", function (e) {
if(e.origin !== "https://www.youtube.com" || e.data === undefined) return;
try {
var data = JSON.parse(e.data);
if(data.event !== 'onStateChange') return;
var callback = callbacks[data.id];
callback(data);
}
catch(e) {}
});
}
// store callback
iframeId++;
callbacks[iframeId] = callback;
var currentFrameId = iframeId;
// sendMessage to frame to start receiving messages
iframe.addEventListener("load", function () {
var message = JSON.stringify({
event: 'listening',
id: currentFrameId,
channel: 'widget'
});
iframe.contentWindow.postMessage(message, 'https://www.youtube.com');
message = JSON.stringify({
event: "command",
func: "addEventListener",
args: ["onStateChange"],
id: currentFrameId,
channel: "widget"
});
iframe.contentWindow.postMessage(message, 'https://www.youtube.com');
});
}
})();
addYoutubeEventListener(document.getElementById("player"), function(e) {
switch(e.info) {
case 1:
// playing
break;
case 0:
// ended
break;
}
});
答案 2 :(得分:0)
有时,事件负载不足以确保iframe中的文档准备就绪。如果iframe位于其他域中,则无法订阅以查看其准备就绪时间。
一种可能的解决方法是记录从iframe收到事件的时间,如果在订阅后没有收到事件,请重试:
var addYoutubeEventListener = (function() {
var callbacks = [];
var iframeId = 0;
var subscribed = [];
return function (iframe, callback) {
// init message listener that will receive messages from youtube iframes
if(iframeId === 0) {
window.addEventListener("message", function (e) {
if(e.origin !== "https://www.youtube.com" || e.data === undefined) return;
try {
var data = JSON.parse(e.data);
subscribed[data.id] = true;
if(data.event !== 'onStateChange') return;
var callback = callbacks[data.id];
callback(data);
}
catch(e) {}
}, true);
}
// store callback
iframeId++;
callbacks[iframeId] = callback;
subscribed[iframeId] = false;
var currentFrameId = iframeId;
//console.log("adding event listener to iframe id " + iframeId);
// sendMessage to frame to start receiving messages
iframe.addEventListener("load", function () {
var tries = 0;
var checkSubscribed = function()
{
if (subscribed[currentFrameId]) {
//console.log("subscribed succesfully " + currentFrameId)
}
else
{
tries++;
//console.log("Try again " + currentFrameId + " (" + tries + ")");
if (tries < 100) {
doSubscribe();
}
else
{
console.log("Unable to subscribe" + currentFrameId );
}
}
}
var doSubscribe = function()
{
var message = JSON.stringify({
event: 'listening',
id: currentFrameId,
channel: 'widget'
});
iframe.contentWindow.postMessage(message, 'https://www.youtube.com');
message = JSON.stringify({
event: "command",
func: "addEventListener",
args: ["onStateChange"],
id: currentFrameId,
channel: "widget"
});
iframe.contentWindow.postMessage(message, 'https://www.youtube.com');
setTimeout(checkSubscribed, 100);
};
doSubscribe();
}, true);
}
})();