log4javascript - Can you load the PopupAppender on demand? -


i trying use log4javascript , wondering if there way load popupappender on demand.

i seeking functionality in-browser tools, there icon in application indicates has been logged , when click it, popupappender opens , allows me view logs.

i'm thinking write own simple appender show icon if there errors, i'm not sure how load popupappender , show historic messages?

you'd have have kind of proxy appender, suggest, stores logging messages , creates popupappender on demand. this:

demo: http://jsfiddle.net/hdrpt/

code:

function ondemandpopupappender() {     this.popupappender = new log4javascript.popupappender();     this.poppedup = false;     this.popperupperdisplayed = false;     this.queuedloggingevents = []; }  var proto = new log4javascript.appender(); ondemandpopupappender.prototype = proto;  proto.appendqueued = function() {     (var = 0, loggingevent; loggingevent = this.queuedloggingevents[i++]; ) {         this.popupappender.append(loggingevent);     }     this.queuedloggingevents.length = 0; };  proto.popup = function() {     this.poppedup = true;     this.appendqueued(); };  proto.append = function(loggingevent) {     var appender = this;     this.queuedloggingevents.push(loggingevent);      if (this.poppedup) {         this.appendqueued();     } else if (!this.popperupperdisplayed &&             loggingevent.level.isgreaterorequal(log4javascript.level.error)) {         var popperupper = document.createelement("div");         popperupper.style.border = "solid red 2px";         popperupper.innerhtml = "there error messages in log. click open.";         popperupper.onclick = function() {             appender.popup();         }         document.body.appendchild(popperupper);         this.popperupperdisplayed = true;     } };  var log = log4javascript.getlogger("main"); log.addappender(new ondemandpopupappender());  log.debug("a debug message"); log.error("a horrible error!");

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