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yongboy/comet.js

Created January 9, 2011 10:34
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comet.js
String.prototype.template=function(){
var args=arguments;
return this.replace(/\{(\d+)\}/g, function(m, i){
return args[i];
});
}
var html = '<div class="logDiv">'
+ '<div class="contentDiv">{0}</div>'
+ '<div class="tipDiv">last date : {1}</div>'
+ '<div class="clear">&nbsp;</div>'
+ '</div>';
function showContent(json) {
$("#showDiv").prepend(html.template(json.content, json.date));
}
var server = 'blogpush';
var comet = {
connection : false,
iframediv : false,
initialize: function() {
if (navigator.appVersion.indexOf("MSIE") != -1) {
comet.connection = new ActiveXObject("htmlfile");
comet.connection.open();
comet.connection.write("<html>");
comet.connection.write("<script>document.domain = '"+document.domain+"'");
comet.connection.write("</html>");
comet.connection.close();
comet.iframediv = comet.connection.createElement("div");
comet.connection.appendChild(comet.iframediv);
comet.connection.parentWindow.comet = comet;
comet.iframediv.innerHTML = "<iframe id='comet_iframe' src='"+server+"'></iframe>";
} else if (navigator.appVersion.indexOf("KHTML") != -1 || navigator.userAgent.indexOf('Opera') >= 0) {
comet.connection = document.createElement('iframe');
comet.connection.setAttribute('id', 'comet_iframe');
comet.connection.setAttribute('src', server);
with (comet.connection.style) {
position = "absolute";
left = top = "-100px";
height = width = "1px";
visibility = "hidden";
}
document.body.appendChild(comet.connection);
} else {
comet.connection = document.createElement('iframe');
comet.connection.setAttribute('id', 'comet_iframe');
with (comet.connection.style) {
left = top = "-100px";
height = width = "1px";
visibility = "hidden";
display = 'none';
}
comet.iframediv = document.createElement('iframe');
comet.iframediv.setAttribute('src', server);
comet.connection.appendChild(comet.iframediv);
document.body.appendChild(comet.connection);
}
},
showMsg:function(data){
showContent(data);
},
timeout2:function(){
var url = server + "?time=" + new Date().getTime();
try{
document.getElementById("comet_iframe").src = url;
}catch(e){
comet.iframediv.childNodes[0].src = url;
}
},
timeout:function(){
var url = server + "?time=" + new Date().getTime();
if (navigator.appVersion.indexOf("MSIE") != -1) {
comet.iframediv.childNodes[0].src = url;
} else if (navigator.appVersion.indexOf("KHTML") != -1 || navigator.userAgent.indexOf('Opera') >= 0) {
document.getElementById("comet_iframe").src = url;
} else {
comet.connection.removeChild(comet.iframediv);
document.body.removeChild(comet.connection);
comet.iframediv.setAttribute('src', url);
comet.connection.appendChild(comet.iframediv);
document.body.appendChild(comet.connection);
}
},
onUnload: function() {
if (comet.connection) {
comet.connection = false;
}
}
}
if (window.addEventListener) {
window.addEventListener("load", comet.initialize, false);
window.addEventListener("unload", comet.onUnload, false);
} else if (window.attachEvent) {
window.attachEvent("onload", comet.initialize);
window.attachEvent("onunload", comet.onUnload);
}
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