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js without jQuery (#342)

Co-authored-by: Rob Ede <robjtede@icloud.com>
This commit is contained in:
Taisuke Fukuno 2020-11-01 00:55:23 +09:00 committed by GitHub
parent 7148fd3d0e
commit 542e6dbcdd
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@ -1,90 +1,112 @@
<!DOCTYPE html>
<meta charset="utf-8" />
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js">
</script>
<script language="javascript" type="text/javascript">
$(function() {
var conn = null;
function log(msg) {
var control = $('#log');
control.html(control.html() + msg + '<br/>');
control.scrollTop(control.scrollTop() + 1000);
}
function connect() {
disconnect();
var wsUri = (window.location.protocol=='https:'&&'wss://'||'ws://')+window.location.host + '/ws/';
conn = new WebSocket(wsUri);
log('Connecting...');
conn.onopen = function() {
log('Connected.');
update_ui();
};
conn.onmessage = function(e) {
log('Received: ' + e.data);
};
conn.onclose = function() {
log('Disconnected.');
conn = null;
update_ui();
};
}
function disconnect() {
if (conn != null) {
log('Disconnecting...');
conn.close();
conn = null;
update_ui();
<head>
<title>Chat!</title>
<meta charset="utf-8" />
<script>
'use strict'
window.onload = () => {
let conn = null
const log = (msg) => {
div_log.innerHTML += msg + '<br>'
div_log.scroll(0, div_log.scrollTop + 1000)
}
const connect = () => {
disconnect()
const wsUri =
(window.location.protocol === 'https:' ? 'wss://' : 'ws://') +
window.location.host +
'/ws/'
conn = new WebSocket(wsUri)
log('Connecting...')
conn.onopen = function () {
log('Connected.')
update_ui()
}
conn.onmessage = function (e) {
log('Received: ' + e.data)
}
conn.onclose = function () {
log('Disconnected.')
conn = null
update_ui()
}
}
const disconnect = () => {
if (conn) {
log('Disconnecting...')
conn.close()
conn = null
update_ui()
}
}
const update_ui = () => {
if (!conn) {
span_status.textContent = 'disconnected'
btn_connect.textContent = 'Connect'
} else {
span_status.textContent = `connected (${conn.protocol})`
btn_connect.textContent = 'Disconnect'
}
}
btn_connect.onclick = () => {
if (!conn) {
connect()
} else {
disconnect()
}
update_ui()
}
btn_send.onclick = () => {
if (!conn) return
const text = input_text.value
log('Sending: ' + text)
conn.send(text)
input_text.value = ''
input_text.focus()
}
input_text.onkeyup = (e) => {
if (e.key === 'Enter') {
btn_send.click()
}
}
}
function update_ui() {
var msg = '';
if (conn == null) {
$('#status').text('disconnected');
$('#connect').html('Connect');
} else {
$('#status').text('connected (' + conn.protocol + ')');
$('#connect').html('Disconnect');
}
}
$('#connect').click(function() {
if (conn == null) {
connect();
} else {
disconnect();
}
update_ui();
return false;
});
$('#send').click(function() {
var text = $('#text').val();
log('Sending: ' + text);
conn.send(text);
$('#text').val('').focus();
return false;
});
$('#text').keyup(function(e) {
if (e.keyCode === 13) {
$('#send').click();
return false;
}
});
});
</script>
</head>
<body>
<h3>Chat!</h3>
<div>
<button id="connect">Connect</button>&nbsp;|&nbsp;Status:
<span id="status">disconnected</span>
</div>
<div id="log"
style="width:20em;height:15em;overflow:auto;border:1px solid black">
</div>
<form id="chatform" onsubmit="return false;">
<input id="text" type="text" />
<input id="send" type="button" value="Send" />
</form>
</body>
</script>
</head>
<body>
<h3>Chat!</h3>
<div>
<button id="btn_connect">Connect</button>
Status: <span id="span_status">disconnected</span>
</div>
<div
id="div_log"
style="width: 20em; height: 15em; overflow: auto; border: 1px solid black"
></div>
<input id="input_text" type="text" />
<input id="btn_send" type="button" value="Send" />
</body>
</html>