473,804 Members | 2,292 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

file ext

44 New Member
hi guys
new in javascript so my question is i wanna validate the file extension

like this
namewww.jpg
ojfgt.rtf
hfyrkeode.pdf

so my problem is i don't know the length of the file name so i wanna validate base file.ext

var f = fld;
var t = f.substring(-4)
so i am wondering if this is the right syntax of substring
Feb 12 '08 #1
3 1298
acoder
16,027 Recognized Expert Moderator MVP
Use indexOf or lastIndexOf to get the position of the dot and then use that with substring.
Feb 12 '08 #2
hirak1984
316 Contributor
Use indexOf or lastIndexOf to get the position of the dot and then use that with substring.
you can use the "split" method of javascript.
it has syntax same as the "String".split( "String") in Java.
Google for it
Feb 12 '08 #3
acoder
16,027 Recognized Expert Moderator MVP
you can use the "split" method of javascript.
it has syntax same as the "String".split( "String") in Java.
Google for it
Yes, that's also a possibility. Here is a useful reference.
Feb 13 '08 #4

Sign in to post your reply or Sign up for a free account.

Similar topics

2
3932
by: matt | last post by:
I have compiled some code, some written by me, some compiled from various sources online, and basically i've got a very simple flat file photo gallery. An upload form, to upload the photos and give them a caption, storing the caption and filename in a text file. It's a bit buggy when removing the photos and captions from the file, and also in displaying them on the delete page. you can see it in action at www.4am.com.au/gallery/upload.php...
5
5470
by: Dave Smithz | last post by:
Hi There, I have a PHP script that sends an email with attachment and works great when provided the path to the file to send. However this file needs to be on the same server as the script. I want to develop a webpage where people can send attachments that are stored on their local PC.
7
3542
by: Joseph | last post by:
Hi, I'm having bit of questions on recursive pointer. I have following code that supports upto 8K files but when i do a file like 12K i get a segment fault. I Know it is in this line of code. How do i make the last pointer in the indirect sector that has another level of indirect pointer, and be defined recursively to support infinite large files? -code-
3
26272
by: StGo | last post by:
How can i read/write file's custom attributs(like subject,author...) in C#??? Thanks :))
0
3945
by: Lokkju | last post by:
I am pretty much lost here - I am trying to create a managed c++ wrapper for this dll, so that I can use it from c#/vb.net, however, it does not conform to any standard style of coding I have seen. It is almost like it is trying to implement it's own COM interfaces... below is the header, and a link to the dll+code: Zip file with header, example, and DLL:...
13
4330
by: Sky Sigal | last post by:
I have created an IHttpHandler that waits for uploads as attachments for a webmail interface, and saves it to a directory that is defined in config.xml. My question is the following: assuming that this is suppossed to end up as a component for others to use, and therefore I do NOT have access to their global.cs::Session_End() how do I cleanup files that were uploaded -- but obviously left stranded when the users aborted/gave up writting...
1
5405
by: Roy | last post by:
Hi, I have a problem that I have been working with for a while. I need to be able from server side (asp.net) to detect that the file i'm streaming down to the client is saved completely/succsessfully on the client's computer before updating some metadata on the server (file downloaded date for instance) However, All examples i have tried, and all examples I have found that other people says works - doesn't work for me :-(
3
3172
by: Shapper | last post by:
Hello, I created a script to upload a file. To determine the file type I am using userPostedFile.ContentType. For example, for a png image I get "image/png". My questions are: 1. Where can I find a list of all the types which can be returned? For example, if it is a Word document will it return "document/doc".
0
2578
by: troutbum | last post by:
I am experiencing problems when one user has a document open through a share pointing to the web site. I use the dsolefile to read the contents of a particular directory and then display them in a datalist. When the next user selects trys to run the page, the page fails and I get a generic error message from the stack trace. I am assuming that the document properties cannot be read when a file is open, but it worked well in asp. ...
0
2037
by: thjwong | last post by:
I'm using WinXP with Microsoft Visual C++ .NET 69462-006-3405781-18776, Microsoft Development Environment 2003 Version 7.1.3088, Microsoft .NET Framework 1.1 Version 1.1.4322 SP1 Most developers said to me that they have no problem doing that, but the following project file is said to be corrupted while opening in the IDE, it is the project file of NT xemacs BETA 21.5.24, http://ftp.xemacs.org/pub/beta/xemacs-21.5.24.tar.gz (under the...
0
10594
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
10343
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
1
10331
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
10087
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
0
9166
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
0
6861
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
1
4306
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
2
3831
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
3001
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.