How to scan for flags in a string, removing them, and processing each one.

[eragon]

I am creating an Ajax/PHP based console-type-thing, where basically the user enters a command at the prompt, it gets sent to a PHP script to get chewed up and processed, and a string of crap comes back out to be displayed.

I would like to know if anyone knows a nifty way in Javascript that I can check if certain flags are present in the return from the server, known as the variable req.responseText.

Some examples:

// Server Returns:
 <br />{p}Please enter your password:
 
// Java should see the {p} as a flag, and the equivalent should occur:
document.getElementById("input").type='password'; // Line 1
output = "Please enter your password:"; // Line 2
 
// As you see, I need several lines similar to the first to execute 
//   whenever a flag is found, and multiple flags should each work, 
//   such as {c}{p}.
// I would also like to be able to use paramaters, such as:
{m=location_mapped, 90, 100}Server Return Text
 
// So that it would process if the flag was "m" with three parameters equal to location_mapped, 90, and 100.
 

Any help is greatly appreciated.

[acoder]

You may be better off with XML or JSON.

You can use some of the String methods to grab the flags, e.g. split(), or match() with a regular expression, or even get character by character with charAt().