Nodejs String Trim Left ltrim(charlist)

Method Source Code

String.prototype.ltrim = function (charlist) {
  charlist = !charlist ? ' \\s\u00A0' : (charlist + '').replace(/([\[\]\(\)\.\?\/\*\{\}\+\$\^\:])/g, '$1');
  var re = new RegExp('[' + charlist + ']+$', 'g');
  return this.replace(re, '');
};

Related

1. ltrim()

   String.prototype.ltrim = function(){
     return this.replace(/^\s+/, "");
   };
   

2. ltrim()

   String.prototype.ltrim = function()
     return this.replace( /^\s*/g, '' ) ;
   

3. ltrim()

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

4. ltrim()

   String.prototype.ltrim=function()
     {return this.replace(/^\s+/,'');}
   

5. ltrim(ch)

   String.prototype.ltrim = function(ch) {
       var r = new RegExp("^{0}+".format(ch || "\\s"));
       return this.replace(r, "");
   };
   

6. trimLeft()

   String.prototype.trimLeft = function() {
     return this.replace(/^\s+/, '');  
   };
   

7. trimLeft()

   String.prototype.trimLeft = String.prototype.trimLeft || function() {
     return this.replace(/^\s+/,'');
   };
   

8. trimLeft(character)

   String.prototype.trimLeft = function (character) {
     character = character || ' ';
     return this.replace(new RegExp('^[' + character + ']+'), "");
   };
   

9. trimLeft(charlist = '\s')

   String.prototype.trimLeft = function(charlist = '\s') {
       return this.replace(new RegExp('^[' + charlist + ']+'), '');
   };