I have a web application , which gives the user the ability to input some values (text,) .Once the user inputs those values and press start it reads a default file from a folder and then writes these entered text at the bottom of the file ..Now say i have 10 lines of text in there , and i need to put a certain entered text at say line 5 or so, then how could i do that...
Plz adivse ....

There are several ways to do this - but I am not clear exactly what you are asking.
Typically, to randomly insert data into a file in the simplest case means you are going to re-write the file.

If the file is relatively small, you would read in the entire file into a string (or array or whatever mechanism that you choose), determine the location where you want to insert the text and modify the string by inserting that text, and then output the file.

If the file is large you might want to read the file in one line at a time (or one chuck at a time or whatever mechanism you want to use) and stream it right back out to another file, until you find the place you need to insert your text - then output that to the new file, then continue to read the original file outputing it into the new file. If that makes sense. When done - you kill the old file and rename the new one.

Woody Z
http://www.learntoprogramnow.com
How to use a forum to help solve problems

hey woody thanks , i would try doing that .....
i have one more question :
I need to include one more folder name with the following line of code.
document.forms['Tool_form'].t_dir.value = "c$\\Tools\\"+(new String(document.forms['Tool_form'].projName.value)).replace(/ /g,"_");

the other name would be from a different form though on the same file :
Tool_Submitform and the name that i want to include would be that whole thing\T+(<input type="hidden" name="t_num" id="t_num">)

for example : c:\Tools\projName\Tt_num -> where t_num could be 0,1,2...
Could you please guide me on that ??

Hm. You are wanting to work with files on the client machine? Or are you just selecting the folder and files you will be working with on the server?

I am assuming you are working with files on the server.

Okay - is it that you are asking how to get values dynamically from dom elements, and then use them to build a string that will also dynamically be displayed on another form in the html document? Or...? It isnt' clear to me what you are asking.



Woody Z
http://www.learntoprogramnow.com
How to use a forum to help solve problems