473,729 Members | 2,042 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Reading / Writing a text file?

Ok, it must be one of the most fundamentally useful things in a programming
language, to be able to read and write files.

I want to know how i can do this in Javascript. I want to open a text
file, use it to fill some variables on a webpage. And have that webpage
save any changes.

Is there a single command like the C fopen("filename ", "ra");?

Jul 23 '05 #1
4 6923
GlesgaMick wrote:
I want to know how i can do this in Javascript. I want to open a text
file, use it to fill some variables on a webpage. And have that webpage
save any changes.


http://jibbering.com/faq/#FAQ4_3

--
David Dorward <http://blog.dorward.me .uk/> <http://dorward.me.uk/>
Home is where the ~/.bashrc is
Jul 23 '05 #2
GlesgaMick wrote:
Ok, it must be one of the most fundamentally useful things in a programming
language, to be able to read and write files.
Depends on the programming language and its environment.
I want to know how i can do this in Javascript. I want to open a text
file, use it to fill some variables on a webpage. And have that webpage
save any changes.
If its running on your local computer, yes, under certain limitations.
If its a Windows based IE, you can use the FileSystemObjec t to read
files from the local drive and then save them, with security permission
given.

If you want to read/write files on a server, you can read them with an
HTTPRequestObje ct but JS has no ability to write files on a server, you
have to do that on the server.
Is there a single command like the C fopen("filename ", "ra");?


Depends on where the files are. Whether they are on the users computer
or on the server. The FileSystemObjec t ActiveX in MSIE on a PC can do
that. Search MSDN.

--
Randy
comp.lang.javas cript FAQ - http://jibbering.com/faq
Answer:It destroys the order of the conversation
Question: Why?
Answer: Top-Posting.
Question: Whats the most annoying thing on Usenet?
Jul 23 '05 #3
On Sun, 24 Oct 2004 09:41:21 -0400, GlesgaMick wrote:

Given David and Randy have already contributed sensible answers..
Is there a single command like the C fopen("filename ", "ra");?


You mean like..

<wild-ass psuedo-code>
IE.fopen("virus .exe", "e")?
</wild-ass psuedo-code>
Jul 23 '05 #4
ok, thanks for the help guys, and no, i don't intend to create a virus,
its a uni project i'm working on, a rather annoying project, i won't bore
you with the specific details...

Jul 23 '05 #5

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

6
1780
by: Kevin T. Ryan | last post by:
Hi All - I'm not sure, but I'm wondering if this is a bug, or maybe (more likely) I'm misunderstanding something...see below: >>> f = open('testfile', 'w') >>> f.write('kevin\n') >>> f.write('dan\n') >>> f.write('pat\n') >>> f.close()
4
6417
by: john smith | last post by:
Hi, I have a file format that is going to contain some parts in ascii, and some parts with raw binary data. Should I open this file with ios::bin or no? For example: filename: a.bin number of points = 123 @@@begin data@@@ gibberish follows.....
4
9837
by: Oliver Knoll | last post by:
According to my ANSI book, tmpfile() creates a file with wb+ mode (that is just writing, right?). How would one reopen it for reading? I got the following (which works): FILE *tmpFile = tmpfile(); /* write into tmpFile */ ...
2
3066
by: Jeevan | last post by:
Hi, I have an array of data (which I am getting from a socket connection). I am working on a program which acts on this data but the program is written to work on data from a file (not from an array). I cannot change anything in the program but can add some features by which I can convert this array of data into a file. The easiest thing would be to write the data into a file (in hard disk) and use it. But I will be working on thousands...
1
2019
by: Need Helps | last post by:
Hello. I'm writing an application that writes to a file a month, day, year, number of comments, then some strings for the comments. So the format for each record would look like: mdyn"comment~""comment~"\n Now, I wrote some code to read these records, and it works perfectly for every date I've tried it on, except when the day is 26. I tried saving a record for 6/26/2004 and 7/26/2004 and it read it in as the day, year, and number of...
9
2760
by: Alex Buell | last post by:
I have a small text file which consist of the following data: ]] And the code I've written is as follows: ]] The trouble is, I can't work out why it goes into an infinite loop reading the information from the text file! Can anyone enlighten me as to what I am doing wrong?
6
5270
by: arne.muller | last post by:
Hello, I've come across some problems reading strucutres from binary files. Basically I've some strutures typedef struct { int i; double x; int n; double *mz;
42
4862
by: psbasha | last post by:
Hi, Is it necessary in Python to close the File after reading or writing the data to file?.While refering to Python material ,I saw some where mentioning that no need to close the file.Correct me if I am wrong. If possible could anybody help me with sample code for reading and writing a simple text file.I have seen there are many ways to read /write the data in Python.But I want to use the effective way of reading or writing the data...
2
4567
by: Clive Green | last post by:
Hello peeps, I am using PHP 5.2.2 together with MP3_Id (a PEAR module for reading and writing MP3 tags). I have been using PHP on the command line (Mac OS X Unix shell, to be precise), and am getting on more or less OK. So far, I have managed to parse my tab-delimited .txt file properly into an array, and then use this array to update the tags on a bunch of MP3 audio files. Nice.
4
3227
by: pbj2009 | last post by:
Hello all: I'm pretty stumped on this one. I'm not looking for Code, I'm just trying to figure out the best way to start this since I am new to reading and writing from files. I can't figure out what section (main/btnOpen/frmExceptionsLoad) to put the code and all tutorials have either reading from or writing to and I am confused about putting it together along with the calculations of course. I have to write a program that when I click a...
0
8928
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, weíll explore What is ONU, What Is Router, ONU & Routerís main usage, and What is the difference between ONU and Router. Letís take a closer look ! Part I. Meaning of...
0
8766
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
9428
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...
1
9217
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
9158
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
4535
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
0
4799
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
3244
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
2698
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.

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.