We had just such a discussion about this on the list a
couple weeks ago.
Here is the solution that I use to remove leading and
trailing spaces:
function
trim(input:String):String {
if (input==undefined || input==null) return input; //quit now if input is not given...
var len:Number = input.length;
var start:Number = 0;
var end:Number = len;
while ((start < end) && (input.charCodeAt(start) <= 32)) { //increment start until first non-whitespace at start of input
start++;
}
while ((start < end) && (input.charCodeAt(end - 1) <= 32)) { //decrement end until first non-whitespace at end of input
end--;
}
return ((start > 0)||(end < len)) ? input.substring(start, end) : input; //return substring if start or end changed, or just return original;
}
if (input==undefined || input==null) return input; //quit now if input is not given...
var len:Number = input.length;
var start:Number = 0;
var end:Number = len;
while ((start < end) && (input.charCodeAt(start) <= 32)) { //increment start until first non-whitespace at start of input
start++;
}
while ((start < end) && (input.charCodeAt(end - 1) <= 32)) { //decrement end until first non-whitespace at end of input
end--;
}
return ((start > 0)||(end < len)) ? input.substring(start, end) : input; //return substring if start or end changed, or just return original;
}
I
based this directly off of how java's String.trim() functions. Note that
this version will also remove tabs, linefeeds and other whitespace type
extras. in fact it removes everything before the ascii-32 character in an
256 character ascii chart.
--
Ronald Kinion
253-205-3000
x5162
[EMAIL PROTECTED]
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Rajesh Jayabalan
Sent: Wednesday, May 18, 2005 1:30 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: string trim
--- In flexcoders@yahoogroups.com, Matt Chotin <[EMAIL PROTECTED]> wrote:
> Here's an alternative to Tracy's that I've used:
>
> function trimString(str : String) : String
> {
> var startIdx = 0;
> while(str.indexOf(' ',startIdx) == startIdx)
> ++startIdx;
> var endIdx = str.length-1;
> while(str.lastIndexOf(' ',endIdx) == endIdx)
> --endIdx;
>
> if (endIdx >= startIdx)
> {
> return str.slice(startIdx,endIdx+1);
> }
> else
> {
> return "";
> }
> }
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