-
Notifications
You must be signed in to change notification settings - Fork 1
/
Copy pathindex.html
140 lines (119 loc) · 3.27 KB
/
index.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
<html>
<head>
<style>
h1,
h2,
h3,
h4,
h5,
h6 {
margin: 0 0.25rem;
}
.chat-window {
display: flex;
border: solid 1px black;
height: 500px;
}
.chat-window #messages {
flex-basis: 70%;
overflow: scroll;
}
.chat-window #users {
border-left: solid 1px black;
}
.chat-box {
margin-top: 10px;
}
.chat-box input {
width: 100%;
}
.chat-box button {
margin-top: 5px;
}
</style>
</head>
<body>
<div class="chat-window">
<div id="messages"></div>
<div id="users"></div>
</div>
<form class="chat-box" id="form">
<input name="text" placeholder="Message" />
<button type="submit">Submit</button>
</form>
</body>
<script>
const socket = new WebSocket("ws://localhost:4000");
const addMessage = (message) => {
// Create an element for message
const el = document.createElement("h3");
// Set text of element to be message
el.appendChild(
document.createTextNode(message.username + ": " + message.text)
);
// Scroll to bottom of messages element
const messagesEl = document.getElementById("messages");
messagesEl.appendChild(el);
messagesEl.scrollTo(0, messagesEl.scrollHeight);
};
const setMessages = (messages) => {
// Clear messages
document.getElementById("messages").innerHTML = "";
// Loop through and add each message
messages.forEach((message) => addMessage(message));
};
const addUser = (username) => {
// Create an element for username
const el = document.createElement("h4");
// Set id of element for easy remove
el.setAttribute("id", username);
el.appendChild(document.createTextNode(username));
document.getElementById("users").appendChild(el);
};
const removeUser = (username) => {
document.getElementById(username).outerHTML = "";
};
const setUsers = (usernames) => {
// Clear usernames
document.getElementById("users").innerHTML = "";
// Loop through and add each username
usernames.forEach((username) => addUser(username));
};
// Listen for messages
socket.addEventListener("message", (e) => {
// Data sent will be a string so parse into an object
const event = JSON.parse(e.data);
// Server sets a type for each message
switch (event.type) {
case "MESSAGES_ADD":
addMessage(event.data);
break;
case "MESSAGES_SET":
setMessages(event.data);
break;
case "USERS_ADD":
addUser(event.data);
break;
case "USERS_REMOVE":
removeUser(event.data);
break;
case "USERS_SET":
setUsers(event.data);
break;
}
});
document.getElementById("form").addEventListener("submit", (event) => {
// Prevent from submitting page
event.preventDefault();
const el = event.target.getElementsByTagName("input")[0];
// Send the message text
socket.send(
JSON.stringify({
text: el.value,
})
);
// Clear the input
el.value = "";
});
</script>
</html>