I want to do a check on whether the broswer has finished loading the jpeg before showing the jpeg file to the user. I wish to replace the jpeg with a loading progress bar gif image. How can i start off doing this script?
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I have a form with three Input File form objects in which the user can add image files. But I am worried about the problems these controls can lead, because to check the file size the server needs to receive the entire file, so serious problems may happen, for example:
1. Malicious user trying to collapse the website sending big files.
2. Users that have not seen the warning “Maximum size: 100 KB� for each image, and try to send three image files consisting in 1,5 MB each one. These users will have a bad experience waiting one hour or more to upload the images, and after that receive an alert saying “Oooops! Your image files are too big.� And also, web server will waste an important amount of resources. The same case with 100 users at the same time can be a nightmare!
I have been searching a way to check the file size on client side without having to force user to install anything, but I think that there isn’ t nothing to do with javascript. But I found an interesting PHP article that explains a way to do it with this server side language. The technique consists in:
“A hidden field (measured in bytes) that precede the file input field, and its value is the maximum filesize accepted. This is an advisory to the browser, PHP also checks it. This form element should always be used as it saves users the trouble of waiting for a big file being transferred only to find that it was too big and the transfer failed. Code:
<html>
This code is not working, i click the size button nothing is happen i checked ActiveXObject is not working i am using IE.
i want to check size of file before send to server by javascript (jquery). who can give me some idea about that.
View 10 Replies View RelatedI developed a web application and it is working fine, except for one issue. The application includes uploading files from a JSP to my servlet, and the issue is that i would like to have a limit for the uploaded files on the client side (before actually uploading it).
I investigated alot and found some ways like changing my JSPs to PHPs, which is not feasable for my application. I would also like to add that using the Flash component ("<object>") for uploading is not feasable also at this time. Using ActiveX does not work also (for some security issues in javascript, it can not access the system information, also ActiveX works only on IE).
I would like to add that I have my application running on Oracle application Server, JSPs for displaying the forms, MultiPart Java API for getting the form input values and files to my servlet and everything is developed in JAVA.
Either by limiting the file size or the limiting the whole request size sent to the servlet.
I'm trying to put in place a file upload validation check. So at the client-side, the User selects a file. Before uploading, at the GUI, if the file exceeds an imposed limit, it will prompt the User that it exceeds the permitted size for upload.
And if it is within the permitted size, the full file path of the file to be uploaded will then be obtained and then used for the actual upload to the Server.
My program is built on EXTJS and Java, running using Tomcat. Browser restricted to Internet Explorer 7 only.
I am using jquery Multifile upload plugin, I want to show the client a pop messages if he/she crosses certain size while uploading files..
<html>
<head>
<script src="/js/jquery.MultiFile.js" type="text/javascript" language="javascript" target="upload_target"></script>
<script>
[code]....
I've got a major headache with IE in that I have a support form that allows users to submit tickets with files which is then emailed off.
Using javascript, jQuery and PHP I have everything under control with all of our favourite browsers - but then comes along IE.
support.php
...
<!-- file -->
<div class="fileUploadEntry">
[code]....
I am wondering if it's possible to run a bit of Javascript to check the size of a div with an assigned class. For example - I'm running a vBulletin forum and users can't have a signature above 400px in height. So, when the page renders, I would like to run a javascript condition that checks to see if the height exceeds 400px. If so, add style="overflow:hidden; height:400px" to the div.
View 1 Replies View RelatedWhen displaying a jpeg file, the image shows up in the top left corner of the browser. Any way to get the image centered?
View 2 Replies View Relatedis there a way to assign an event to a file input so that when a user selects a file to upload the event is triggered and i can check out the file extension? The reason why is simple, i want to perform different actions depending on the type of the file.
View 2 Replies View RelatedI recently been reading a code for a moving jpeg file. as im designing a webpage and the gif format looks rubbish when i use it. [URL] however i cant seem to get the thing to work. ive made sure the code has the directory for JavaLogo.class file and for the jpeg i wana use and that their in the same folder. ive told it how big the frames are but all i get in frontpage when ive entered all that is a blue J that doesnt move.
View 5 Replies View RelatedIs it possible to covert the html code(Online url) to JPEG using Javascript(File Reader Object)?
View 3 Replies View RelatedCan JavaScript detect the size of an image file?
View 2 Replies View RelatedI have some links to files (.zip, .rar...) and i would like to get its size
could you say me how to do or give me some references?
I have developed an upload tool, that allows users to upload files (funny
that). The asp form object has a 'SizeLimit' property that can be set, to
prevent files being uploaded, that are too large. Is there a way in
Javascript, to interrogate the file size before the form is posted, so that
the validation can be done before trying to post the form.
The only information I can find, on file size, relates to images. But any
file can be uploaded through this tool, so I also need to determine the size
of other binary and text files.
I need to detect the size of a file entered via input type file. How do I do this? Also it should work on both IE and FireFox.
View 2 Replies View RelatedI know there are restrictions on the client side in this regard, but thought I would ask. Can you determine a files size on the client? I purchased one of those upload to server applications. But I do not want to send large files. Their application only allows me check the side after sending the file to the server (after the fact). I need to know the size before hand. Just like validating text in a textbox before submission, I want to check the file size on the client before submission. Is there any way to do this on the client?
View 1 Replies View RelatedI'm trying to make some kind of progress bar using AJAX and PHP.
I want to check the size of tmp file (before it moves to the destination dictionary) during it's being uploaded.
Is that possible to check the file size of tmp file that is being created when someone click on upload form button, before it's fully uploaded.
I noticed that you can do it only after the file is already uploaded so only after isset($_FILES['name_of_file']) will give the truth.
i was wondering is there any good way to check a file size that is being uploaded to the server via a standart form, using Java Script?
i know this is easy to do using server side programing, but i need to do it somehow on the client side, before the file is being submitted...?
In JSP / HTML, I want to restrict the size of file being uploaded.
<input type="file" name="myfile"/>
If the user trying to upload a file size bigger than some value say 5MB, i want to give mesage to the user. I don't want to wait till the file gets uploaded to server and then validate the file size. I am looking for client side validation. Can it be done using scripting language or any other way?
Need a solution for this in Internet Explorer. I got a solution using ActiveX control:
var myFSO = new ActiveXObject("Scripting.FileSystemObject");
var filepath = document.getElementById('myfile').value;
var thefile = myFSO.getFile(filepath);
var sizeInBytes = thefile.size;
But ActiveX controls are not allowed in our application. Is there any alternative way for this?
I have an HTML document with a static links, I want to display a files size next to what the documents are linking.
So,
/documents/myfile.zip - (3mb)
I have made directory listers in php, but can anybody do this in javascript?
So I wish to be able to click on a small thumbnail (small_tn1.jpeg) and a bigger picture pops out in a new window. (big_tn1.jpeg).I have looked at lightbox-versions but they are to complex with code.I want to use one function openBig() to be able to use on all my pictures on the site. So all my pictures will be named; small_tn1.jpeg, big_tn1.jpeg, small_tn2.jpeg, big_tn2.jpeg...I haven't found any that full fill my request. The closest code I found is for only a single-image. http://www.pcurtis.com/popup_advanced.htm*It's a school assignment, so I can not use jQuery or target="_blank"*
View 3 Replies View RelatedDoes anyone know ifjQuery plugin: Validation can check that a file being uploaded is no larger than say 1500k?
View 1 Replies View RelatedI have used ASP.net 1.1. In that application user can upload the file(any printable document like doc/xls/ppt/pps/jpg/gif etc.,). The user allows to upload a max of 4MB.
But if the user uploads more than 4MB I'll issue a msg. But in slow network, the user needs to wait for much time to upload and even get error msg.
I want to stop from client side itself. Once the user selects the file to upload it shud b checked frm Javascript.
* Is there any way to do achieve this?
* The user should not change security settings in browser, if u suggests some method.
* If it is not possible/meaningful then please tell me the reasons very clearly. So I can stop searching.
* Please note any printable document can be uploaded.
In JSP / HTML, I want to restrict the size of file being uploaded.
If the size of file more than a specific size say 5MB, i want to give mesage to the user. I don't want to wait till the file gets uploaded to server and then validate the file size. I need client side validation. Can it be done using scripting language or any other way?
I need a solution for this in Internet Explorer. There is already a solution I got using ActiveX control:
But ActiveX controls not allowed in our application. Is there any alternative way for this?
