JQuery :: Check File Size Before Send To Server?
Sep 5, 2010i want to check size of file before send to server by javascript (jquery). who can give me some idea about that.
View 10 Repliesi want to check size of file before send to server by javascript (jquery). who can give me some idea about that.
View 10 RepliesI saw some plugin through the google:
1. http:www.uploadify.com/
2. http:valums.com/ajax-upload/
Which related with upload file.
I a bit confuse on What different between Applet and Plugin? How the file can send from the client PC to the server? By the way, do DIC have the sample source for this? If no let me do it for the new one here.
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:
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?
<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 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?
View 16 Replies View RelatedI am trying to find a way to search to see if there is a specific file located in the current directory on the server. If a folder contains file1.txt or file2.txt and depending on which file is in that folder change a certain javascript variable. What it comes down to is, is there a way to search for specific files on the server and limit that to the current directory/folder.
View 12 Replies View RelatedSo I have an web application deployed on tomcat. That application is a document browser[URL] that renders some html pages. In one of those pages I will have a svg that will change some colors if some files are/are not deployed in the server. So I am trying to create a javascript function that open that file. The code I am using is this:
Code:
<script type="text/javascript">
var xmlhttp=false;
/*@cc_on @*/
[Code]....
I am using jquery to send an ajax request from my facebook app which is in iframe to my server. The ajax request works fine when the web app is running stand alone and out of facebook platform, but within facebook, the result that I get from my ajax request is blank !!! Here is the code I use:
$
.
ajax
[code]....
I have a table of input elements which i create through a javascript widget. When i press submit i want to make an action and a part of the output should be the same unchanged tables with the values in it. I don't know how to accomplish it. At first i used the html() function, but it does not pass the table with the html values inserted as i would like.
View 6 Replies View RelatedI wanna send a file thru the JQuery.load, I want it to work exactly like the regular post without the JQuery. So I can check the $_FILES['file']['error'] in PHP and all its features like I do without using JQuery.
$("#load").load('gerenciar_itens.php',{/* This is where I wanna pass the file. */}, function(data){
alert(data);
});
I built a pretty simple Ajax request which needs to send some data to the server and put the resulting HTML in a div. Unforunately, I need to POST the data. I used .post() and it worked fine ... *on Chrome and Opera!* ... on Firefox no data gets posted even though firebug shows the data in it's console. I ended up building the longest possible request, just to try all the options. No luck. As soon as I POST anything, Firefox won't receive the data. If this was a Firefox issue, wouldn't I read about it everywhere? What's wrong?
View 2 Replies View RelatedI want to send three text box values to server using jquery ajax. problem is that, i dont know the exact syntax to send three data. When i try sending one data(also change no.of parameters to one at server side method), its going good but when i try to send three text box values, its giving jquery error:"Internal server error". I think I am not sending data in correct way. Example below contains only two sending data, because i was trying to send 2 data first.
Below is the code:
function testCAll() {
$.ajax({
type: "POST",
url: "dbTest1.aspx/SendMessage",
[Code]....
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 have a form with 2 fields datepicker. How do I check both boxes have a date before I send ajax data?
$
(
document)
.
ready(
function
[Code]...
The code only checks one of the two fields and sends the data.
I have the following JavaScript (see below). The script requests an XML file from the server and displays it on the page.
The script works fine when the requested XML file is stored on the same server as the script.
The problem is when I try requesting an XML file from an external server such as the National Weather Service. I get an error. If I take the XML file from the National Weather Service and save it to my server it works. Why can't I use my script to request XML files stored on external servers?
Javascript Code
window.onload = initAll;
var xhr = false;
function initAll() {
document.getElementById("makeTextRequest").onclick = getNewFile;
[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]....
What is the best way to get the client time to the server? Would I user http headers? (I dont know how to do that) or is ajax the best method? I could use ajax to send the unix timestamp to the server everytime a page loads and save the difference between it and the server timestamp as a session variable. sounds sensible?
I dont want to work with timezones but I do want to get the actual time set on the client's computer.
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.
whats the best way to pass a json string to the server.
if my jsonstring = {a:Ƈ',b:'sds',c:'sdg'}
could i send that to the server passing it as 1 variable like so:
url = /serverside.php?json=jsonstring
or would i have to break it down into something like this:
url = /serverside.php?a=1&b=sds&c=sdg
I am using Ajax to send a large text box to a server script, however, when the textbox has a lot of data it fails. Is there a better way for me to do this? Here is my code.
Code:
<script type="text/javascript">
function testmail()
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
[Code]...
I am creating an XML document on my page with javascript. My question
is, is it possible to save that xml file on the server (I have write
permissions) only using javascript, ie no server code? This task would
be trivial using server code, but I was wondering if I can do it all
with client code and post backs? Well, any input?
is 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 RelatedWhy cannot I send a string which contains "&" character to web server? The web server returns an error of undefined object.
View 2 Replies View RelatedI would like to implement a login functionality to my website.
I've written a login form like this:
The problem is: how can I send the username and password to the server in a securely way? I mean, if the server sends the whole page in HTTP then the user wants to log in, he would not be able to send it in HTTPS, unless the server sends the login page to the user in HTTPS. But I would like this thing to happen with no full page refresh.