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<!DOCTYPE html>
<html lang="en">
<head>
<title>Chat Example</title>
<script type="text/javascript">
window.onload = function () {
var conn;
var msg = document.getElementById("msg");
var log = document.getElementById("log");
function appendLog(item) {
var doScroll = log.scrollTop > log.scrollHeight - log.clientHeight - 1;
log.appendChild(item);
if (doScroll) {
log.scrollTop = log.scrollHeight - log.clientHeight;
}
}
document.getElementById("form").onsubmit = function () {
if (!conn) {
return false;
}
if (!msg.value) {
return false;
}
conn.send(msg.value);
msg.value = "";
return false;
};
if (window["WebSocket"]) {
conn = new WebSocket("ws://" + document.location.host + "/ws");
conn.onclose = function (evt) {
var item = document.createElement("div");
item.innerHTML = "<b>Connection closed.</b>";
appendLog(item);
};
conn.onmessage = function (evt) {
var messages = evt.data.split('\n');
for (var i = 0; i < messages.length; i++) {
var item = document.createElement("div");
item.innerText = messages[i];
appendLog(item);
}
};
} else {
var item = document.createElement("div");
item.innerHTML = "<b>Your browser does not support WebSockets.</b>";
appendLog(item);
}
};
</script>
<style type="text/css">
html {
overflow: hidden;
}
body {
overflow: hidden;
padding: 0;
margin: 0;
width: 100%;
height: 100%;
background: gray;
}
#log {
background: white;
margin: 0;
padding: 0.5em 0.5em 0.5em 0.5em;
position: absolute;
top: 0.5em;
left: 0.5em;
right: 0.5em;
bottom: 3em;
overflow: auto;
}
#form {
padding: 0 0.5em 0 0.5em;
margin: 0;
position: absolute;
bottom: 1em;
left: 0px;
width: 100%;
overflow: hidden;
}
</style>
</head>
<body>
<div id="log"></div>
<form id="form">
<input type="submit" value="Send" />
<input type="text" id="msg" size="64"/>
</form>
</body>
</html>
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