Question

谁能帮我解释一下这几行js代码，谢谢了！

<script type="text/javascript">
var sock = null;
var wsuri = "ws://localhost:23456/echoTrend";

function connectWebsocket() {
sock = new WebSocket(wsuri);

sock.onopen = function() {
console.log("connected to " + wsuri);
}

sock.onclose = function(e) {
console.log("connection closed (" + e.code + ")");
}

sock.onmessage = function(e) {
var json = JSON.parse(e.data);
//console.log(json);
drawPic(json);
}

};

connectWebsocket();
</script>

Answer 1

这是html5 websocket...

追问

我不太懂这个，能不能帮我解释一下？这几行代码的大体功能？或者给我一个你说的这个的教程，我学习一下