W3School TIY Editor
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<!DOCTYPE html> <html> <body> <h1 id="myH1"></h1> <div id="myDIV"></div> <p><b>注释：</b>Internet Explorer 不支持 Server-Sent 事件。</p> <script> if(typeof(EventSource) !== "undefined") { var source = new EventSource("/html/demo_sse.php"); source.addEventListener("open", function() { document.getElementById("myH1").innerHTML = "Getting server updates"; }); source.addEventListener("message", function(event) { document.getElementById("myDIV").innerHTML += event.data + "<br>"; }); } else { document.getElementById("myDIV").innerHTML = "Sorry, your browser does not support server-sent events..."; } </script> </body> </html>