GlobalEventHandlers.onloadend - Web APIs
the onloadend property of the globaleventhandlers mixin is an eventhandler representing the code to be called when the loadend event is raised (when progress has stopped on the loading of a resource.) syntax img.onloadend = funcref; value funcref is the handler function to be called when the resource's loadend event fires. examples html content <img src="myimage.jpg"> javascript content // 'loadstart' fires first, then 'load', then 'loadend' image.addeventlistener('load', function(e) { console.log('image loaded'); }); image.addeventlistener('loadstart', function(e) { console.log('image load started'); }); image.addeventlistener('loadend', function(e) { console.log('image load finished'); }); ...

FileReader - Web APIs
borted. filereader.onerror a handler for the error event. this event is triggered each time the reading operation encounter an error. filereader.onload a handler for the load event. this event is triggered each time the reading operation is successfully completed. filereader.onloadstart a handler for the loadstart event. this event is triggered each time the reading is starting. filereader.onloadend a handler for the loadend event. this event is triggered each time the reading operation is completed (either in success or failure). filereader.onprogress a handler for the progress event. this event is triggered while reading a blob content. as filereader inherits from eventtarget, all those events can also be listened for by using the addeventlistener method. methods filereader.abor...
...read has been aborted, for example because the program called filereader.abort(). also available via the onabort property. error fired when the read failed due to an error. also available via the onerror property. load fired when a read has completed successfully. also available via the onload property. loadend fired when a read has completed, successfully or not. also available via the onloadend property. loadstart fired when a read has started. also available via the onloadstart property. progress fired periodically as data is read. also available via the onprogress property. specifications specification status comment file apithe definition of 'filereader' in that specification. working draft initial definition ...

Index - Web APIs
the onloadeddata property of the globaleventhandlers mixin is the eventhandler for processing loadeddata events. 1513 globaleventhandlers.onloadedmetadata api, event handler, globaleventhandlers, property, reference the onloadedmetadata property of the globaleventhandlers mixin is the eventhandler for processing loadedmetadata events. ...
...ssing loadeddata events. 1513 globaleventhandlers.onloadedmetadata api, event handler, globaleventhandlers, property, reference the onloadedmetadata property of the globaleventhandlers mixin is the eventhandler for processing loadedmetadata events. 1514 globaleventhandlers.onloadend api, dom, event handler, globaleventhandlers, property, reference, web, events, onloadend the onloadend property of the globaleventhandlers mixin is an eventhandler representing the code to be called when the loadend event is raised (when progress has stopped on the loading of a resource.) 1515 globaleventhandlers.onloadstart the onloadstart property sets and returns the event handler for the loadstart event. 1516 globaleventhandlers.onloadstart ...

Canvas code snippets - Archive of obsolete content
fied location. the function returns a promise which resolves when the file has been completely saved. function savecanvas(canvas, path, type, options) { return task.spawn(function *() { var reader = new filereader; var blob = yield new promise(accept => canvas.toblob(accept, type, options)); reader.readasarraybuffer(blob); yield new promise(accept => { reader.onloadend = accept }); return yield os.file.writeatomic(path, new uint8array(reader.result), { tmppath: path + '.tmp' }); }); } loading a remote page onto a canvas element the following class first creates a hidden iframe element and attaches a listener to the frame's load event. once the remote page has loaded, the remotepageloaded method fires. thi...

OS.File for the main thread
var writepath = os.path.join(os.constants.path.desktopdir, 'savedimage.png'); var promise = os.file.writeatomic(writepath, new uint8array(r.result), { tmppath: writepath + '.tmp' }); promise.then( function(aval) { console.log('successfully saved image to disk');...

nsIXMLHttpRequestEventTarget
attribute type description onabort nsidomeventlistener a javascript function object that gets invoked if the operation is canceled by the user. onerror nsidomeventlistener a javascript function object that gets invoked if the operation fails to complete due to an error. onload nsidomeventlistener a javascript function object that gets invoked when the operation is successfully completed. onloadend nsidomeventlistener a javascript function object that gets invoked when the operation is completed for any reason; it will always follow a an abort, error, or load event. onloadstart nsidomeventlistener a javascript function object that gets invoked exactly once when the operation begins. onprogress nsidomeventlistener a javascript function object that gets invoked zero or more times, after ...

Document - Web APIs
sed. globaleventhandlers.onload is an eventhandler representing the code to be called when the load event is raised. globaleventhandlers.onloadeddata is an eventhandler representing the code to be called when the loadeddata event is raised. globaleventhandlers.onloadedmetadata is an eventhandler representing the code to be called when the loadedmetadata event is raised. ...

FileReader: loadend event - Web APIs
the loadend event is fired when a file read has completed, successfully or not. ...

FileReader.readyState - Web APIs
. done the read operation is complete. this could mean that: the entire file or blob has been read into memory, a file read error occurred, or abort() was called and the read was cancelled. example var reader = new filereader(); console.log('empty', reader.readystate); // readystate will be 0 reader.readastext(blob); console.log('loading', reader.readystate); // readystate will be 1 reader.onloadend = function () { console.log('done', reader.readystate); // readystate will be 2 }; value a number which is one of the three possible state constants define for the filereader api. specifications specification status comment file apithe definition of 'readystate' in that specification. working draft initial definition ...

GlobalEventHandlers - Web APIs
sed. globaleventhandlers.onload is an eventhandler representing the code to be called when the load event is raised. globaleventhandlers.onloadeddata is an eventhandler representing the code to be called when the loadeddata event is raised. globaleventhandlers.onloadedmetadata is an eventhandler representing the code to be called when the loadedmetadata event is raised. ...

HTMLCanvasElement.mozGetAsFile() - Web APIs
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HTMLCanvasElement.toBlob() - Web APIs
x chrome context or add-on code as os apis are not present on web sites. var canvas = document.getelementbyid('canvas'); var d = canvas.width; ctx = canvas.getcontext('2d'); ctx.beginpath(); ctx.moveto(d / 2, 0); ctx.lineto(d, d); ctx.lineto(0, d); ctx.closepath(); ctx.fillstyle = 'yellow'; ctx.fill(); function blobcallback(iconname) { return function(b) { var r = new filereader(); r.onloadend = function () { // r.result contains the arraybuffer. cu.import('resource://gre/modules/osfile.jsm'); var writepath = os.path.join(os.constants.path.desktopdir, iconname + '.ico'); var promise = os.file.writeatomic(writepath, new uint8array(r.result), {tmppath:writepath + '.tmp'}); promise.then( funct...

ProgressEvent - Web APIs
method. examples the following example adds a progressevent to a new xmlhttprequest and uses it to display the status of the request. var progressbar = document.getelementbyid("p"), client = new xmlhttprequest() client.open("get", "magical-unicorns") client.onprogress = function(pe) { if(pe.lengthcomputable) { progressbar.max = pe.total progressbar.value = pe.loaded } } client.onloadend = function(pe) { progressbar.value = pe.loaded } client.send() specifications specification status comment xmlhttprequestthe definition of 'progressevent' in that specification. living standard ...

XMLHttpRequest: loadend event - Web APIs
the loadend event is fired when a request has completed, whether successfully (after load) or unsuccessfully (after abort or error). ...

XMLHttpRequest.upload - Web APIs
ate the amount of progress made so far. abort onabort the upload operation was aborted. error onerror the upload failed due to an error. load onload the upload completed successfully. timeout ontimeout the upload timed out because a reply did not arrive within the time interval specified by the xmlhttprequest.timeout. loadend onloadend the upload finished. this event does not differentiate between success or failure, and is sent at the end of the upload regardless of the outcome. prior to this event, one of load, error, abort, or timeout will already have been delivered to indicate why the upload ended. specifications specification status comment xmlhttprequest living standard whatwg...