Compress A File Using Script?
Oct 2, 2010Would like to test for the file size of a file. If file is over 20 MB I would like to use some javascript to compress the file.
View 1 RepliesWould like to test for the file size of a file. If file is over 20 MB I would like to use some javascript to compress the file.
View 1 RepliesI want to compress some javascript files using gzip/deflate.
The thing I worry about though is browser support. In my searches, I've seen some suggestions that some older browsers will send the http Accept-Encoding: gzip header, but they aren't actually capable of using a compressed javascript file.
I've seen various solutions which try to sniff the browser via the user_agent header and just serve the uncompressed version when it thinks the browser is gonna choke on it. But the sniffing examples I've seen seem to vary a lot, and I worry they aren't very good.
For example, look at the sample provided by the apache manual [URL] Used as-is, that's gonna catch opera and serve it an uncompressed file, when opera will handle it just fine. And I've also seen people say safari(which versions I'm not sure) doesn't like compressed javascript either, but I don't see anything in the example provided by mod_deflate that would save safari from doom.
Many of the webpages I've come across on this subject seem outdated or incomplete, which doesn't do much for my confidence.
What do you do? Part of me want's to just give these buggy browsers what they ask for when they say they accept gzip/deflate and let them explode....but I think there's still too many users of these older browsers to just do that. I feel I should make a good faith effort to try to make it work reasonably well. This seems like a very realistic issue and I'm somewhat suprised I'm not finding more information on it.
I'm new to JavaScript. I have relatively large amounts of text (~200 kB) that I need to transfer to my web application every now and then. Using RAR, I get a 5:1 compression ratio on these files, for example one of 180 kB is compressed to 34kB.
Is there some standard way to decompress files in JavaScript?
I have a website with no ssi, php, cgi...nothing. Plain old flat pages are all it serves.
I need to upload a list to it - a big, plain text list in html. A 2Mb list!
With gzip compress, it comes down to 91Kb, much more modem-friendly!
After about 30 minutes of googling, I haven't yet found a way of serving this page up like this.
I can't send headers as no php or .htaccess is allowed.
And please don't suggest I move to a "proper" web host! It's for a friend with a one-off need for a small website for about 2 months, and the freebie 10Mb is fine.
I'm finally diving into regexp by porting a perl script over to js that uses regexp to compress javascript into a bookmarklet capable format.I've successfully worked out 90% of the expressions but am troubled with a few, this one at the moment is odd:I want to remove the first line if it hasjavascript:So I thought str.replace(/^javascripts+:s+/, "") would be ok. I want javascript text, any space, colon, any space and new line. what I'm doing wrong.btw this is the original perl version
$src =~ s{^// ?javascript.+:.+
}{};
I would like to know better ways to compress and minify jquery scripts, if i have multiple scripts and some of them from the same author...can i simply copy and paste them into one file?
View 2 Replies View RelatedI have a <input type = file> button for uploading a file in my php page. As soon as i select a file from the button, i need the file data to be displayed so that i check whether the file selected has the correct data. How can i do this.
View 1 Replies View RelatedMy client will upload some pdf files in my php page.
I want to find a pdf file is normal file or shared review file. If it is shared review file then only i can allow to upload that file.
How can i find a pdf file is normal file or shared review file?
I'm writing a script and I've encountered a problem.. I have a txt file with many words, each word in a different line. For example: the file words.txt contains:
word1
word2
word3
word4
word5
I need to load the content of the file into a variable in my script. I prefer that all the words will be in the same variable with line breaks, but if you'll figure out a way to put it in an array, it's ok too. I really don't know how to do it, and I tried to google but didn't understand.. By the way, I don't want to change the txt file to js file, I need it to remain txt..
I got an [object error] from IE 7.0.5730.11 when moving the <script
src="..." type="text/javascript" /tag from the <headpart to the
<bodysection of a HTML file.
Is not possibile to include Javascript code via <script src="..."
type="text/javascript" /from the <bodysection, instead from the
<headone? If yes, anyone has any idea of which the problem could be?
If not, how can I programmatically include a javascript external file
inside the <bodypart of a HTML file, for example, using Javascript
to some particular native functions?
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 RelatedI'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 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.
$("#load").load('gerenciar_itens.php',{/* This is where I wanna pass the file. */}, function(data){
alert(data);
});
I have a problem with the latest version of the jQuery Form Plugin (2.80). To be more precise, I guess I am doing something wrong, and with an older version (2.67) somehow it didn't matter.With the old version, the file was uploaded without problems. Now Firefox opens a new Tab on clicking the submit button and nothing is done. Chrome doesn't open a new tab, but also nothing happens. In Wireshark I can see that there is no file attached in the POST message with the older version, the file was sent.My first guess was that my file handling on the server side is erroneous - but on the other hand, when there is no file attached, what should I handle there?
View 2 Replies View RelatedI am using jquery Multifile upload plugin, I want to show the client a pop messages if he/she crosses certain size while uploading files..
<html>
<head>
<script src="/js/jquery.MultiFile.js" type="text/javascript" language="javascript" target="upload_target"></script>
<script>
[code]....
If I switch the w3schools' file with the same local file, it will not work with firefox.Does anybody know why the local file is not displayed correctly?
~/linux/test/jQuery/ajax$ cat main1.html
<html>
<head>
[code]....
I am looking for a way to select a file from a list and load it into a webpage. The page and the files are stored on a sd-card for off-line usage, I know that listing files remote dynamicly needs a scripting engine but since the sd-card is on the client side that is not possible, but I can make a list of those files when creating them.
It is intended for a datalogger on a tractor-puller, I create csv files with a bash script on the logger and for off-line viewing I use a javascript charting engine which loads the csv file, the files have the creation date as filename and I can make (and maintain) a list of files when creating them. The plan is that the we can select another data set (run) from within the browser and show that one. I have setup an example at [URL]
I have a external file for example abc.js ,in this abc.js file no functions ,it contains some scripting,i want to call the scripting file though html I use the code
<script type="text/javascript src="abc.js"></script>
in the header file but i want it in a href tag
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:
I have one html-file where the user inserts a search path for an excel file. When the user clicks the button the data in the excel file should be presented in a <TABLE>. (Yeah, I know, activex only works in IE .. but that's good enough for this project)
The problem is .. I started out with a "fixed" search path for the excel file, so I didn't have the code in a function. That worked just fine. Once I added the function {} around the code it wouldn't work, it works just fine if I comment out the form-part and the function-part, and give the search path, of course.
It also works just fine if I use the function and form, but remove the <TABLE>- and <TR>-rows
[Code]...
When the JS file is not working at the time of Ajax files is called. on first time the onmouseover JS is working but , if you call the ajax JS is not working.
View 2 Replies View RelatedI'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'm working on this project where I'm trying to use jquery to read from an xml file and generate added code to a html index file by creating dropdown select menus and then allowing the user to display pictures according to what of the 2 category 'select' types they select on the dropdown list.
The program works as far as generating the select dropdown list but only generates the images for the first selected option. When I select the second drop down category nothing happens it simply shows the pics from the first category. When I go into firebug and display the html file after the script is run there are an extra set of <p> tags without anything in them. I traced through the script and can't find where the <p></p> is coming from. It's not on the initial html page. I have the script below for the xml and jq.
<?xml version="1.0" encoding="ISO-8859-1"?>
<gallery>
<picture class="House and Home">
<listing>Pics/HouseHome/h1.jpg</listing>
[Code]......
I'm trying to get the full path of a file with a file uploader form with FF. I see HTML5 permits this but I cannot find any concrete examples to access this value from a normal html file uploader form.
View 2 Replies View RelatedI need to get the filename, basename, dirname using jQuery. if there is any utility that will take care of windows/mac/linux file paths.
View 1 Replies View RelatedI 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.