websocket_test.html，使用浏览器打开html文件，即可在console中看到三次websocket连接的结果
<!DOCTYPE HTML>
<html>
<head>
<script type = "text/javascript">
function WebSocketTest() {
if ("WebSocket" in window) {
console.log("WebSocket is supported by your Browser!");
// Let us open a web socket
var ws = new WebSocket("ws://ime-handwriting-adapter.com.cn/ws/ime_handwriting_recognition?SN=77777777");
ws.onopen = function() {
// Web Socket is connected, send data using send()
var message = {
"data": "614, 732, 604, 753, 574, 807, 549, 875, 554, 942, 588, 964, 621, 984, 657, 992, 689, 987, 710, 977, 711, 977, -1, 0, -1, -1, 619, 949, 604, 966, 584, 989, 563, 1007, 540, 1014, 522, 1014, 512, 1007, 516, 989, 529, 963, 557, 919, 597, 875, 644, 823, 682, 785, 700, 768, 703, 766, 698, 775, 687, 796, 679, 824, 679, 854, 692, 877, 720, 891, 756, 906, 783, 917, 796, 928, 792, 951, 783, 973, 764, 997, 726, 1010, 696, 1013, 683, 1008, 683, 990, 695, 960, 722, 916, 754, 878, 787, 851, 814, 830, 837, 816, 837, 816, -1, 0, -1, -1",
"mode": "0",
"id": 1
}
var str_message = JSON.stringify(message)
ws.send(str_message);
console.log("Message is sent...");
};
ws.onmessage = function (evt) {
var received_msg = evt.data;
console.log("Message is received: ", evt.data);
};
ws.onclose = function() {
console.log("Connection is closed...");
};
} else {
console.log("WebSocket NOT supported by your Browser!");
}
}
// 循环发送三次websocket请求
for (let i=0; i<3; i++) {
setTimeout(function(){WebSocketTest()}, 5000*i )
}
</script>
</head>
<body>
<div id = "sse">
<a>WebSocket Test</a>
</div>
</body>
</html>