bigbluebutton-Github/bigbluebutton-web/web-app/demo/heartbeat.js

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/*
* JHeartbeat 0.1.1 Beta
* By Jason Levine (http://www.jasons-toolbox.com)
* A heartbeat plugin for the jquery library to help keep sessions alive.
*/
$.jheartbeat = {
options: {
url: "heartbeat_default.asp",
delay: 10000
},
beatfunction: function(){
},
timeoutobj: {
id: -1
},
set: function(options, onbeatfunction) {
if (this.timeoutobj.id > -1) {
clearTimeout(this.timeoutobj);
}
if (options) {
$.extend(this.options, options);
}
if (onbeatfunction) {
this.beatfunction = onbeatfunction;
}
// Add the HeartBeatDIV to the page
$("body").append("<div id=\"HeartBeatDIV\" style=\"display: none;\"></div>");
this.timeoutobj.id = setTimeout("$.jheartbeat.beat();", this.options.delay);
},
beat: function() {
$("#HeartBeatDIV").load(this.options.url);
this.timeoutobj.id = setTimeout("$.jheartbeat.beat();", this.options.delay);
this.beatfunction();
}
};