File Size On Client?
Dec 16, 2000
I 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?
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Dec 20, 2004
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:
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May 27, 2010
I 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.
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May 18, 2009
I have a .js file, we want to make it to load a html file right next to it, both files are on client system. I couldn't find any such examples and some posts talked about JavaScript security issues, I wonder if it is related to what I want.
Someone said .js file is not really JaveScript file, though Microsoft named it 'JavaScript'.
note that I am trying to "call" .html file from the .js file, not embed html code in .js.
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Sep 1, 2011
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.
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Jun 2, 2011
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]....
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Nov 29, 2011
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]....
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Jul 20, 2011
I am developing a mobile app. I have a script that will read the contents of a csv into an array. It works great, however I am not sure how to take that array and insert it into a db. The following is the script that reads the csv --
function IO(U, V) {
var X = !window.XMLHttpRequest ? new
ActiveXObject("Microsoft.XMLHTTP") : new XMLHttpRequest;
X.open(V ? "PUT" : "GET", U, false);
[Code].....
I want to insert the array 'mycells' into the db but do not know what the correct syntax would be.
t.executeSql('INSERT INTO mytable (name, phone, street, city, state) VALUES (?
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Jan 13, 2005
what I'm trying to do is get the browser to display a warning if the file the user inputs is one of an array of allowed files (which is thoroughly checked server-side), but are wasteful in size (like .bmp .tif .avi .wav). I want them to be able to upload it if they want, but just to notify them they could save space by converting to a smaller format (as they pay per megabyte). So on submit I need to get the file input value, check the extension, and if its allowed but wasteful to display a message with a yes and no button, which would submit if they press yes and not if they press no.
I'm not very experience with javascript but I know a lot about php, but I don't really know what the equivalent functions are.
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May 23, 2007
I developped a SW for restaurants, pub, ecc...
It's developped in php (and html, javascript, mysql) and runs by an Apache webserver (phpdev 4.2.3). The my system is not absolutely connected to the web.
It is a client-server system: in the server is installed Apache, while the clients are PCs where only a web browser (IE) is running, connected to the server via Wi-Fi.
I have the following problem:
I want to show in the clients some videos (huge files); therefore I would kike to avoid to download them everytime from the server (in order to not overload the Wi-fi network).
The client should call a php page from the server, but the video file should be downloaded from the own (client) HD.
The question is:
Is it possible to open a file (in my case a video file) on the Local HD of the client PC by a javascript?
Please consider that, if it could be a restriction problem on the client PC, I can change the configuration because it is not an internet application.
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Sep 6, 2005
I have an html page, with jscript inside. some variables, some of them
multidimensional arrays. i need to send this information, which can be
changed by the user, to an asp file. the only way i could think of, is
putting it inside hidden box and sending the form. is there any more
elegant way?
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Oct 9, 2011
Not sure if this relates more to PHP or Javascript/jQuery, but is there a way to attach a file to an email client (i.e Outlook), when user click on a link/button?I have a link that generates a PDF and I want it so that, when someone click on a link, it will open up their email client with the PDF already attached, and subject already fill in.I know, you can use <a href="mailto."but that only opens up the mail client. I also need to attach a file with a subject fill in.
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Oct 12, 2011
I am trying to execute an .exe file on client side using javascript, say i want to run an pbrush or calc on client side click using JAVASCRIPT..
I tried this by embedding the following in source page of my web application(ASP.NET)
But i am getting an script error called Automation Server can't create an object
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Apr 8, 2010
On a client side HTML form, on hitting submit, I would like the data entered in the the form to be saved on the next available line within a .txt file.
For example, a basic HTML Form filled in as follows:
Name: Haze
Age: 400
Info: Hello World!
... on clicking 'Submit', the information would be saved to 'form.txt' on a new line, simply seperated by commas would be fine, example:
Haze, 400, Hello World!
If possible, the date and time the info was saved would really be great as well, example:
01/01/2010 9:41: Haze, 400, Hello World!
I might I cannot find anything on the internet for doing this client side.
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Jul 23, 2005
Can JavaScript detect the size of an image file?
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Jul 23, 2005
I 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?
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Jul 23, 2005
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.
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Jan 15, 2009
Theres this situation where i have to place a js file (say myscript.js) on a client's website to do something on their page (like create a div element with some content in it). Now, myscript.js works when window or DOM has loaded. The problem is that the client will/may also have onload functions which will be overridden by myscript.js if i place it at the end of the page or vice versa if at the top of the page.
Theres one (albeit obstrusive) way in which it can be done. Create multiple onload function (Simon Willison's script) within myscript.js and call that function from the client's webpage.But i dont want to add any inline javascript code on the webpage. Just the external js (myscript.js) file should do. Is it workable to load my script externally and not add any inline call to myscript.js as well as leave the client's javascript onload scripts unaffected?
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Mar 22, 2006
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.
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Feb 1, 2010
I'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.
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Mar 23, 2002
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...?
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Jun 14, 2011
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?
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Mar 31, 2011
<html>
This code is not working, i click the size button nothing is happen i checked ActiveXObject is not working i am using IE.
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May 14, 2006
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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Jul 7, 2010
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?
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Aug 4, 2010
Does anyone know ifjQuery plugin: Validation can check that a file being uploaded is no larger than say 1500k?
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