github.com/insionng/yougam@v0.0.0-20170714101924-2bc18d833463/libraries/igm/sockjs-go.v2/examples/webecho/web/app.js (about)

     1  if (!window.location.origin) { // Some browsers (mainly IE) do not have this property, so we need to build it manually...
     2    window.location.origin = window.location.protocol + '//' + window.location.hostname + (window.location.port ? (':' + window.location.port) : '');
     3  }
     4  
     5  var origin = window.location.origin;
     6  
     7  // options usage example
     8  var options = {
     9  		debug: true,
    10  		devel: true,
    11  		protocols_whitelist: ['websocket', 'xdr-streaming', 'xhr-streaming', 'iframe-eventsource', 'iframe-htmlfile', 'xdr-polling', 'xhr-polling', 'iframe-xhr-polling', 'jsonp-polling']
    12  };
    13  
    14  var sock = new SockJS(origin+'/echo', undefined, options);
    15  
    16  sock.onopen = function() {
    17  	//console.log('connection open');
    18  	document.getElementById("status").innerHTML = "connected";
    19  	document.getElementById("send").disabled=false;
    20  };
    21  
    22  sock.onmessage = function(e) {
    23  	document.getElementById("output").value += e.data +"\n";
    24  };
    25  
    26  sock.onclose = function() {
    27  	document.getElementById("status").innerHTML = "connection closed";
    28  	//console.log('connection closed');
    29  };
    30  
    31  function send() {
    32  	text = document.getElementById("input").value;
    33  	sock.send(document.getElementById("input").value); return false;
    34  }