‘use strict‘;
var ws, serverInput, textInput, log,
connectButton, disconnectButton, sendButton;
serverInput = document.getElementById(‘serverInput‘);
textInput = document.getElementById(‘textInput‘);
log = document.getElementById(‘log‘);
connectButton = document.getElementById(‘connectButton‘);
disconnectButton = document.getElementById(‘disconnectButton‘);
sendButton = document.getElementById(‘sendButton‘);
connectButton.addEventListener(‘click‘, clickConnect, false);
disconnectButton.addEventListener(‘click‘, clickDisconnect, false);
sendButton.addEventListener(‘click‘, clickSend, false);
function clickConnect() {
ws = new WebSocket("ws://127.0.0.1:8888");
ws.onopen = function(evt) {
logMessage(‘‘, ‘Connected‘);
connectButton.disabled = true;
disconnectButton.disabled = false;
sendButton.disabled = false;
};
ws.onclose = function(evt) {
logMessage(‘err‘, ‘Disconnected‘);
connectButton.disabled = false;
disconnectButton.disabled = true;
sendButton.disabled = true;
};
//客户端接收到服务端返回的信息
ws.onmessage = function(evt) {
logMessage(‘msg‘, ‘Received: ‘ + evt.data);
};
ws.onerror = function(evt) {
logMessage(‘err‘, ‘Error: ‘ + evt.data);
};
}
function clickDisconnect() {
ws.close();
}
function clickSend() {
logMessage(‘send‘, ‘Sent: ‘ + textInput.value);
ws.send(textInput.value);
}
function logMessage(type, msg) {
log.innerHTML += ‘<p class="‘ + type + ‘">‘ + msg + ‘</p>‘;
}
服务端代码