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Trim, LTrim and RTrim Functions using Regular Expressions

, 9 Nov 2010
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Trim: remove whitespace from the start and end(both sides) of the string.
LTrim: remove start whitespace of the string.
RTrim: remove end whitespace of the string.
Rather than using a clumsy loop, use a simple, elegant regular expression.
String.prototype.trim = function() {
    return this.replace(/^\s+|\s+$/g,"");
String.prototype.ltrim = function() {
    return this.replace(/^\s+/,"");
String.prototype.rtrim = function() {
    return this.replace(/\s+$/,"");
// example of using trim, ltrim, and rtrim
var myString = " hello my name is imdadhusen  ";

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About the Author

Sunasara Imdadhusen
Software Developer (Senior) Infostretch Ahmedabad-Gujarat
India India
Aspiring for a challenging carrier wherein I can learn, grow, expand and share my existing knowledge in meaningful and coherent way.

sunaSaRa Imdadhusen
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Comments and Discussions

GeneralMy vote of 5 PinmemberSavalia Manoj M7-Nov-12 1:11 
GeneralRe: My vote of 5 PinprofessionalSunasara Imdadhusen22-Apr-14 3:49 
GeneralEdit: Subject spelling, and other minor errors with spelling... PinmentorDaveAuld9-Nov-10 1:00 

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