Here you can find the source of Rtrim()
String.prototype.Rtrim = function(){ return this.replace(/(\s*$)/g, ""); };
String.prototype.rightTrim = function () { return this.replace(/\s+$/, "");
String.prototype.rightTrim=function(){ return this.replace(/\s+$/,'');
String.prototype.TrimEnd = function( aimStr ) var str = this; var re = My.RegExp.InvolvedCharsRegExp; var reEnd; if ( aimStr ) aimStr = aimStr.replace( re, '\\$1' ); reEnd = new RegExp( '(' + aimStr + ')+$' ); ...
String.prototype.TrimEnd = function (v) if (this.substring(this.length - 1, this.length) == v) { return this.substring(0, this.length - 1); else { return this;
String.prototype.RTrim = function() { return this.replace(/\s+$/g, "");
String.prototype.endTrim = function (char) { let length = this.length; if (length) { if (this.charAt(length - 1) === char) { return this.substring(0, length - 1); return this.toString(); }; ...