I have been searching the net and testing for hours now but I could not pinpoint what the error is. So, I am looking for your kind help here. I followed step by step multiple files upload tutorial with the drag & drop functionality but I got the error message as mentioned in the title (and the line of code that throws the error is xmlhttp.send(data); ).
File upload.js has this function:
(function(o) {
"use strict";
var ajax, getFormData, setProgress;
ajax = function(data) {
var xmlhttp = new XMLHttpRequest();
var uploaded;
xmlhttp.addEventListener('readystatechange', function() {
if (this.readyState === 4) {
if(this.status === 200){
uploaded = JSON.parse(this.response);
if(typeof o.options.finished === 'function'){
o.options.finished(uploaded);
}
} else {
if(typeof o.options.error === 'function'){
o.options.error();
}
}
}
});
xmlhttp.open('post', o.options.processor);
xmlhttp.send(data);
};
getFormData = function(source) {
var data = new FormData();
var i;
for(i = 0; i < source.length; i = i + 1) {
data.append('files[]', source[i]);
}
return data;
};
o.uploader = function(options) {
o.options = options;
if(o.options.files !== undefined) {
ajax(getFormData(o.options.files));
}
};
}());
and the global.js file has this code:
(function() {
"use strict";
var dropZone = document.getElementById('drop-zone');
var uploadsFinished = document.getElementById('uploads-finished');
var startUpload = function(files) {
app.uploader({
files: files,
Processor: 'upload.php',
finished: function(data){
var x;
var uploadedElement;
var uploadedAnchor;
var uploadStatus;
for (x = 0; x < data.length; x = x + 1) {
currFile = data[x];
uploadedElement = document.createElement('div');
uploadedElement.className = 'uploaded-console-upload';
uploadedAnchor = document.getElementById('a');
uploadedAnchor.textContent = currFile.name;
if(currFile.uploaded) {
uploadedAnchor.href = 'uploads/' + currFile.file;
}
uploadedStatus = document.createElement('span');
uploadedStatus.textContent = currFile.uploaded ? 'uploaded' : 'Failed';
uploadedElement.appendChild(uploadedAnchor);
uploadedElement.appendChild(uploadedStatus);
uploadsFinished.appendChild(uploadedElement);
}
uploadsFinished.className = '';
},
error: function() {
//console.log('There was an error');
}
});
};
//Standard form upload
document.getElementById('standard-upload').addEventListener('click', function(e) {
var standardUploadFiles = document.getElementById('standard-upload-files').files;
e.preventDefault();
startUpload();
});
//Drop funtionality
dropZone.ondrop = function(e){
e.preventDefault();
this.className = 'upload-console-drop';
startUpload(e.dataTransfer.files);
};
dropZone.ondragover = function() {
this.className = 'upload-console-drop drop';
return false;
};
dropZone.ondragleave = function() {
this.className = 'upload-console-drop';
return false;
};
}());
Any help to solve this problem would be greatly appreciated. Thank you.
o.options.processor was defined as Processor and when it was called back later in the code, it was referred to as processor (changing from Processor to processor) solved the case. Thank you guys with your comments that helped me to find the error.
Related
Recently I want to start a project by piggyback someone's extension. I want to scope one of the image source (local variable, a base64 url) and then photo recognize it on the popup page. I keep getting error "imgb64.replace is not a function" or "imgb64" not defined.
like my title said, I want to scope the local variable in.in.inside a function (from backgound.js )and use it globally (or in popup.js). very new to this, please help guys.
// this is popup.js
chrome.runtime.getBackgroundPage(function(bg) {
bg.capture(window);
});
/// what I did
function img_find() {
var imgs = document.getElementsByTagName("img");
var imgSrcs = [];
for (var i = 0; i < imgs.length; i++) {
imgSrcs.push(imgs[i].src);
}
return imgSrcs;
}
var imgb64 = img_find();
try {
const app = new Clarifai.App({
apiKey: 'mykey'
});
}
catch(err) {
alert("Need a valid API Key!");
throw "Invalid API Key";
}
// Checks for valid image type
function validFile(imageName) {
var lowerImageName = imageName.toLowerCase();
return lowerImageName.search(/jpg|png|bmp|tiff/gi) != -1;
}
var imageDetails = imgb64.replace(/^data:image\/(.*);base64,/, '');
console.log(imageDetails)
app.models.predict("e466caa0619f444ab97497640cefc4dc", {base64:
imageDetails}).then(
function(response) {
// do something with response
},
function(err) {
// there was an error
}
);
/// end what I did
below is background.js, I think what I need is the local var img.src, thats all.
function capture(popup) {
function callOnLoad(func) {
popup.addEventListener("load", func);
if (popup.document.readyState === "complete") {
func();
}
}
crxCS.insert(null, { file: "capture.js" }, function() {
crxCS.callA(null, "get", function(result) {
var scrShot, zm, bufCav, bufCavCtx;
function mkImgList() {
for (var i = 0; i < result.vidShots.length; i++) {
var img = new popup.Image();
img.onload = function() {
this.style.height = this.naturalHeight /
(this.naturalWidth / 400) + "px";
};
if (result.vidShots[i].constructor === String) {
img.src = result.vidShots[i];
} else {
bufCav.width = result.vidShots[i].width * zm;
bufCav.height = result.vidShots[i].height * zm;
bufCavCtx.drawImage(scrShot, -result.vidShots[i].left *
zm, -result.vidShots[i].top * zm);
img.src = bufCav.toDataURL('image/png');
////// maybe clarifai here ?
////end clarifai
}
popup.document.body.appendChild(img);
}
popup.onclick = function(mouseEvent) {
if (mouseEvent.target.tagName === "IMG") {
chrome.downloads.download({ url: mouseEvent.target.src,
saveAs: true, filename: "chrome_video_capture_" + (new Date()).getTime() +
".png" });
}
};
popup.onunload = function(mouseEvent) {
crxCS.callA(null, "rcy");
};
} /// end mkImgList
if (result.needScrShot) {
bufCav = popup.document.createElement("canvas");
bufCavCtx = bufCav.getContext("2d");
chrome.tabs.captureVisibleTab({ format: "png" },
function(dataUrl) {
scrShot = new Image();
scrShot.onload = function() {
chrome.tabs.getZoom(function(zoomFactor) {
zm = zoomFactor;
callOnLoad(function() {
mkImgList(zoomFactor);
});
});
};
scrShot.src = dataUrl;
});
} else if (result.vidShots.length) {
callOnLoad(mkImgList);
} else {
popup.document.body.appendChild(notFound);
}
}); // end crxCS.callA
}); // end crxCS.insert
} // end capture
Please help guys. :)
Hi I have the following JS on my page. It is working fine on chrome and firefox. but its not working on Internet Explorer 11. I'm a salesforce developer and I don't know much javascript. Can you please help me find where the issue is?
Thanks in advance.
tests = {
filereader: typeof FileReader != 'undefined',
dnd: 'draggable' in document.createElement('span'),
formdata: !!window.FormData,
progress: "upload" in new XMLHttpRequest
},
support = {
filereader: document.getElementById('filereader'),
formdata: document.getElementById('formdata'),
progress: document.getElementById('progress')
},
progress = document.getElementById('uploadprogress'),
fileupload = document.getElementById('upload');
"filereader formdata progress".split(' ').forEach(
function (api) {
if (tests[api] === false) {
support[api].className = 'fail';
} else {
support[api].className = 'hidden';
}
}
);
function textBeforeDrag(flag){
if(flag)
{
holder_txt1.className = '';
holder_txt2.className = 'hidden';
}else{
holder_txt1.className = 'hidden';
holder_txt2.className = '';
}
}
function resetAll()
{
holder.className = holder_txt1.className = '';
holder_txt2.className = uploadStatus.className = 'hidden';
}
function readfiles(files) {
var goodSize = true;
var formData = tests.formdata ? new FormData() : null;
for (var i = 0; i < files.length; i++) {
size = typeof ActiveXObject !== 'undefined' ?
getIEFileSize(files[i])
:
files[i].fileSize || files[i].size;
goodSize = 5000000 > size;
if(!goodSize)
{
alert(files[i].name +' is too large, please choose a file that is 5Mb or less');
return;
}
goodSize = 26214400 > size+{!allAttSize};
if(!goodSize)
{
alert(this.files[0].name +' is too large - Total Attachment Size should not exceed 25MB');
return;
}
uploadStatus.className = '';
holder.className = 'hidden';
// now post a new XHR request
if (tests.formdata) {
var xhr = new XMLHttpRequest();
var sfdcurl = 'https://'+sfdcHostName+'.salesforce.com/services/apexrest/DragAndDrop/v1?FileName='+encodeURIComponent(files[i].name)+'&cType='+encodeURIComponent(files[i].type)+ '&parId={!thisCase.id}';
xhr.open('POST','/services/proxy' );
xhr.setRequestHeader("Authorization","Bearer {!$Api.Session_ID}");
xhr.setRequestHeader('SalesforceProxy-Endpoint', sfdcurl);
xhr.setRequestHeader('X-User-Agent', 'DragAndDropAPI v1.0');
xhr.onload = function() {
progress.value = progress.innerHTML = 100;
};
if (tests.progress) {
xhr.upload.onprogress = function (event) {
if (event.lengthComputable) {
var complete = (event.loaded / event.total * 100 | 0);
progress.value = progress.innerHTML = complete;
}
}
}
xhr.onreadystatechange=function()
{
if (xhr.readyState==4 && xhr.status != 200)
{
if(xhr.responseText)
alert(xhr.responseText);
else
alert('Some error occurred while uploading file');
console.log(xhr);
}else{
}
}
xhr.send(files[i]);
}
}
setTimeout(function(){addDroppedAttachment();},1000);
}
if (tests.dnd) {
holder.ondragover = function () {
this.className = 'hover';
textBeforeDrag(false);
return false;
};
holder.ondragend = function () {
this.className = '';
textBeforeDrag(true);
return false;
};
holder.ondrop = function (e) {
textBeforeDrag(true);
this.className = '';
e.preventDefault();
readfiles(e.dataTransfer.files);
resetAll();
}
} else {
fileupload.className = 'hidden';
fileupload.querySelector('input').onchange = function () {
readfiles(this.files);
};
}
In the line:
var xhr = new XMLHttpRequest();
Change for:
var xhr = new ActiveXObject('Msxml2.XMLHTTP');
Now, your file upload work only in Internet Explorer 11.
Maybe, for you file upload to work in all navigator's (that support XMLHTTPRequest), try this:
if('ActiveXObject' in window){
return new ActiveXObject('Msxml2.XMLHTTP');
}else{
return new XMLHttpRequest();
}
Source: http://www.purplesquirrels.com.au/2014/06/local-ajax-calls-ie11/.
i have call the below function in my application
function workerCall() {
debugger;
if (typeof (Worker) !== "undefined") {
var worker = new Worker("Scripts/worker.js");
worker.onmessage = workerResultReceiver;
worker.onerror = workerErrorReceiver;
worker.postMessage({ 'username': Username });
function workerResultReceiver(e) {
$('.NotificationCount').html(e.data);
if (parseInt(e.data) != 0 && currentPage == "Alert") {
StateFlag = false;
$('.Notification').show();
$('.Drildown').each(function () {
var temp = this.id;
if ($('#' + temp).attr('expand') == "true") {
currentTab = temp;
StateFlag = true;
}
});
currentScrollPosition = $('body').scrollTop();
GetAlerts();
} else {
$('.Notification').hide();
}
}
function workerErrorReceiver(e) {
console.log("there was a problem with the WebWorker within " + e);
}
}
else {
}
}
the method will execute in IE,Chrome but when comes to Mozilla i got an error ReferenceError: workerResultReceiver is not defined.How can i resolve this error?
This happens because you are making reference to function that is not created yet. You need to put this:
worker.onmessage = workerResultReceiver;
worker.onerror = workerErrorReceiver;
Above
function workerErrorReceiver
line or at the end of the scope.
I'm trying to check many items against information on ajax URL. But when I'm running this function in browser, memory usage goes above 2 gigs and then browser crashes (Chrome, Firefox). What am I doing wrong? items variable is really big - >200 000 and also includes some large strings.
var items = [1,2,3,4,5,6,7,8,9,10,...,300000]
var activeItems = {}
function loopAjax(){
for (i=0; i < items.length; i++) {
var currItem = items[i];
var request = new XMLHttpRequest();
var found = 0
request.open("GET", "/item=" + currItem);
request.onreadystatechange = function() {
if (request.readyState == 4 && request.status == 200) {
var response = JSON.parse(request.responseText);
var active = response[0].active;
if (active) {
console.log("FOUND ACTIVE! " + currItem);
activeItems[found] = {"active": true, "item": currItem};
found++;
}
}
}
request.send();
}
}
Thank goodness the browser stalls and dies. If it didn't you just created a denial of service attack!
The problem needs to be reapproached. You better off creating a state machine which has a stack of requests in it. That way you only doing say 5 concurrent requests at a time.
function ItemChecker(sample_size, max_threads) {
this.sample_size = sample_size;
this.max_threads = max_threads;
this.counter = 0;
this.activeItems = [];
this.isRunning = false;
this.running_count = 0;
}
ItemChecker.prototype.start = function start() {
this.isRunning = true;
while (this.running_count < this.max_threads) {
this.next();
}
return this;
};
ItemChecker.prototype.stop = fucntion stop() {
this.isRunning = false;
return this;
};
ItemChecker.prototype.next = function next() {
var request, item_id, _this = this;
function xhrFinished(req) {
var response;
if (req.readyState !== 4) {
return;
}
_this.counter--;
if (req.status === 200) {
try {
response = JSON.parse(request.responseText);
if (response[0].active) {
_this.activeItems.push({
active: true,
item: item_id;
});
}
} catch(e) {
console.error(e);
}
// When finished call a callback
if (_this.onDone && _this.counter >= _this.sample_size) {
_this.onDone(_this.activeItems);
}
}
else {
console.warn("Server returned " + req.status);
}
}
if (!this.isRunning || this.counter >= this.sample_size) {
return;
}
item_id = this.counter;
this.counter++;
request = new XMLHttpRequest();
request.onreadystatechange = xhrFinished;
request.open("GET", "item=" + item_id);
request.send();
};
ItemChecker.prototype.whenDone = function whenDone(callback) {
this.onDone = callback;
return this;
};
This might work? Didn't try it for real. But you would call it with:
var item_checker = new ItemChecker(300000, 5);
item_checker.whenDone(function(active) {
// Do something with active
}).start();
I'm getting WebResource error in my asp.Net page:
var __pendingCallbacks = new Array();
Microsoft JScript runtime error: 'Array' is undefined
I have no idea what might cause this to happen. Isn't Array part of Javascript itself? Any help would be appreciated.
EDIT
The problem is that this isn't code that I wrote, it's built into the page structure in asp.Net.
EDIT
The problem only occurs in IE9 and only when run in IE9 mode (not compatibility)
Code:
(This is dynamically generated code, sorry for the length. Problem is about halfway down)
function WebForm_PostBackOptions(eventTarget, eventArgument, validation, validationGroup, actionUrl, trackFocus, clientSubmit) {
this.eventTarget = eventTarget;
this.eventArgument = eventArgument;
this.validation = validation;
this.validationGroup = validationGroup;
this.actionUrl = actionUrl;
this.trackFocus = trackFocus;
this.clientSubmit = clientSubmit;
}
function WebForm_DoPostBackWithOptions(options) {
var validationResult = true;
if (options.validation) {
if (typeof(Page_ClientValidate) == 'function') {
validationResult = Page_ClientValidate(options.validationGroup);
}
}
if (validationResult) {
if ((typeof(options.actionUrl) != "undefined") && (options.actionUrl != null) && (options.actionUrl.length > 0)) {
theForm.action = options.actionUrl;
}
if (options.trackFocus) {
var lastFocus = theForm.elements["__LASTFOCUS"];
if ((typeof(lastFocus) != "undefined") && (lastFocus != null)) {
if (typeof(document.activeElement) == "undefined") {
lastFocus.value = options.eventTarget;
}
else {
var active = document.activeElement;
if ((typeof(active) != "undefined") && (active != null)) {
if ((typeof(active.id) != "undefined") && (active.id != null) && (active.id.length > 0)) {
lastFocus.value = active.id;
}
else if (typeof(active.name) != "undefined") {
lastFocus.value = active.name;
}
}
}
}
}
}
if (options.clientSubmit) {
__doPostBack(options.eventTarget, options.eventArgument);
}
}
var __pendingCallbacks = new Array();
var __synchronousCallBackIndex = -1;
function WebForm_DoCallback(eventTarget, eventArgument, eventCallback, context, errorCallback, useAsync) {
var postData = __theFormPostData +
"__CALLBACKID=" + WebForm_EncodeCallback(eventTarget) +
"&__CALLBACKPARAM=" + WebForm_EncodeCallback(eventArgument);
if (theForm["__EVENTVALIDATION"]) {
postData += "&__EVENTVALIDATION=" + WebForm_EncodeCallback(theForm["__EVENTVALIDATION"].value);
}
var xmlRequest,e;
try {
xmlRequest = new XMLHttpRequest();
}
catch(e) {
try {
xmlRequest = new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e) {
}
}
var setRequestHeaderMethodExists = true;
try {
setRequestHeaderMethodExists = (xmlRequest && xmlRequest.setRequestHeader);
}
catch(e) {}
var callback = new Object();
callback.eventCallback = eventCallback;
callback.context = context;
callback.errorCallback = errorCallback;
callback.async = useAsync;
var callbackIndex = WebForm_FillFirstAvailableSlot(__pendingCallbacks, callback);
if (!useAsync) {
if (__synchronousCallBackIndex != -1) {
__pendingCallbacks[__synchronousCallBackIndex] = null;
}
__synchronousCallBackIndex = callbackIndex;
}
if (setRequestHeaderMethodExists) {
xmlRequest.onreadystatechange = WebForm_CallbackComplete;
callback.xmlRequest = xmlRequest;
xmlRequest.open("POST", theForm.action, true);
xmlRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=utf-8");
xmlRequest.send(postData);
return;
}
callback.xmlRequest = new Object();
var callbackFrameID = "__CALLBACKFRAME" + callbackIndex;
var xmlRequestFrame = document.frames[callbackFrameID];
if (!xmlRequestFrame) {
xmlRequestFrame = document.createElement("IFRAME");
xmlRequestFrame.width = "1";
xmlRequestFrame.height = "1";
xmlRequestFrame.frameBorder = "0";
xmlRequestFrame.id = callbackFrameID;
xmlRequestFrame.name = callbackFrameID;
xmlRequestFrame.style.position = "absolute";
xmlRequestFrame.style.top = "-100px"
xmlRequestFrame.style.left = "-100px";
try {
if (callBackFrameUrl) {
xmlRequestFrame.src = callBackFrameUrl;
}
}
catch(e) {}
document.body.appendChild(xmlRequestFrame);
}
var interval = window.setInterval(function() {
xmlRequestFrame = document.frames[callbackFrameID];
if (xmlRequestFrame && xmlRequestFrame.document) {
window.clearInterval(interval);
xmlRequestFrame.document.write("");
xmlRequestFrame.document.close();
xmlRequestFrame.document.write('<html><body><form method="post"><input type="hidden" name="__CALLBACKLOADSCRIPT" value="t"></form></body></html>');
xmlRequestFrame.document.close();
xmlRequestFrame.document.forms[0].action = theForm.action;
var count = __theFormPostCollection.length;
var element;
for (var i = 0; i < count; i++) {
element = __theFormPostCollection[i];
if (element) {
var fieldElement = xmlRequestFrame.document.createElement("INPUT");
fieldElement.type = "hidden";
fieldElement.name = element.name;
fieldElement.value = element.value;
xmlRequestFrame.document.forms[0].appendChild(fieldElement);
}
}
var callbackIdFieldElement = xmlRequestFrame.document.createElement("INPUT");
callbackIdFieldElement.type = "hidden";
callbackIdFieldElement.name = "__CALLBACKID";
callbackIdFieldElement.value = eventTarget;
xmlRequestFrame.document.forms[0].appendChild(callbackIdFieldElement);
var callbackParamFieldElement = xmlRequestFrame.document.createElement("INPUT");
callbackParamFieldElement.type = "hidden";
callbackParamFieldElement.name = "__CALLBACKPARAM";
callbackParamFieldElement.value = eventArgument;
xmlRequestFrame.document.forms[0].appendChild(callbackParamFieldElement);
if (theForm["__EVENTVALIDATION"]) {
var callbackValidationFieldElement = xmlRequestFrame.document.createElement("INPUT");
callbackValidationFieldElement.type = "hidden";
callbackValidationFieldElement.name = "__EVENTVALIDATION";
callbackValidationFieldElement.value = theForm["__EVENTVALIDATION"].value;
xmlRequestFrame.document.forms[0].appendChild(callbackValidationFieldElement);
}
var callbackIndexFieldElement = xmlRequestFrame.document.createElement("INPUT");
callbackIndexFieldElement.type = "hidden";
callbackIndexFieldElement.name = "__CALLBACKINDEX";
callbackIndexFieldElement.value = callbackIndex;
xmlRequestFrame.document.forms[0].appendChild(callbackIndexFieldElement);
xmlRequestFrame.document.forms[0].submit();
}
}, 10);
}
This happens because we have this setup
<collapsible panel>
<iframe>
<script>
</script>
</iframe>
</collapsible panel>
When the page loads, the panel being shown forces the script inside the iframe to be dragged through the DOM before the javascript libraries are loaded. This seems to be a change in that was made for IE9. I have yet to fine a way around this issue but at least I know the cause. A temporary workaround is to force the compatibility of the page to IE8 using a meta tag in case anybody else runs into this issue.
The problem was fixed when I removed the SRC attribute from the iframe and I added onOpen event to jQuery's dialog:
open: function(){
document.getElementById("iframename").src = "page.aspx";
}