Nodejs String Trim trim()

Method Source Code

//*******************************************************************************
// Educational Online Test Delivery System
// Copyright (c) 2015 American Institutes for Research
////  w ww . j  ava2  s.  co  m
// Distributed under the AIR Open Source License, Version 1.0
// See accompanying file AIR-License-1_0.txt or at
// http://www.smarterapp.org/documents/American_Institutes_for_Research_Open_Source_Software_License.pdf
//*******************************************************************************
/** **************************************************************************
* @class String
* @superclass Object
* @param none
* @return none
* Extends String class and adds three prototype functions.  
*****************************************************************************
*/

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+$/,'');
};

Related

1. trim()

   String.prototype.trim = function() {
     return this.replace(/(^\s*)|(\s*$)/g, "");
   };
   String.prototype.trim = function() {
     var start = 0,
       end = this.length - 1,
       ws = /\s/;
     while (ws.test(this.charAt(start))) {
       start++;
   ...
   

2. trim()

   String.prototype.trim = function()
       var res = this;
       while (res.substring(0, 1) == " ") {
           res = res.substring(1, res.length);
       while (res.substring(res.length - 1, res.length) == " ") {
           res = res.substring(0, res.length - 1);
       return res;
   

3. trim()

   String.prototype.trim = function () {
     return this .replace(/^\s\s*/, '' ).replace(/\s\s*$/, '' );
   function isEmpty(str){
     if(str == null || str== undefined || str.trim().length == 0)
       return true;
     else
       return false;
   

4. trim()

   String.prototype.trim = function () {
       var str = this.replace( /^\s\s*/, '' ),
           ws = /\s/,
           i = str.length;
       while ( ws.test( str.charAt( i -= 1 ) ) ) {}
       return str.slice( 0, i + 1 );
   };
   

5. trim()

   String.prototype.trim = function () {
       var str = this.replace( /^\s\s*/, '' ),
           ws = /\s/,
           i = str.length;
       while ( ws.test( str.charAt( i -= 1 ) ) ) {}
       return str.slice( 0, i + 1 );
   };
   

6. trim()

   String.prototype.trim = function() { return this.replace(/^\s+|\s+$/g, ''); }
   function isProbablyUrl(string) {
     var substr = string.substring(0,4).toLowerCase();
     if (substr == 'ftp:' || substr == 'www.') return true;
     var substr = string.substring(0,5).toLowerCase();
     if (substr == 'http:') return true;
     var substr = string.substring(0,6).toLowerCase();
     if (substr == 'https:') return true;
     var substr = string.substring(0,7).toLowerCase();
   ...
   

7. trim()

   String.prototype.trim = function() {
       return this.replace(/^\s+|\s+$/g, "");
   

8. trim()

   String.prototype.trim=function()
     return this.replace(/^\s+|\s+$/g, '');
   String.prototype.ltrim=function()
     return this.replace(/^\s+/,'');
   String.prototype.rtrim=function()
   ...
   

9. trim()

   String.prototype.trim = function() {
     this.replace(/(^\s*)|(\s*$)/gi,'');
     this.replace(/[ ]{2,}/gi,' ');
     this.replace(/\n /,'\n');
     return this;
   };