FAQ Topic - How do I trim whitespace - LTRIM/RTRIM/TRIM?

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FAQ Topic - How do I trim whitespace - LTRIM/RTRIM/TRIM?
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Using Regular Expressions (JavaScript 1.2/JScript 4+) :

String.prototype.LTrim=new Function("return this.replace(/^\\s+/,'')")
String.prototype.RTrim=new Function("return this.replace(/\\s+$/,'')")
String.prototype.Trim=
new Function("return this.replace(/^\\s+|\\s+$/g,'')")

or for all versions (trims characters ASCII<32 not true
"whitespace"):

function LTrim(str) {
for (var k=0; k<str.length && str.charAt(k)<=" " ; k++) ;
return str.substring(k,str.length);
}
function RTrim(str) {
for (var j=str.length-1; j>=0 && str.charAt(j)<=" " ; j--) ;
return str.substring(0,j+1);
}
function Trim(str) {
return LTrim(RTrim(str));
}

http://msdn.microsoft.com/library/en-us/script56/html/js56reconIntroductionToRegularExpressions.asp

http://docs.sun.com/source/816-6408-10/regexp.htm


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