Nodejs String Trim trim()

Method Source Code

String.prototype.trim = function(){
            //from   ww  w  . j a va2 s.co  m
   var start,end;
   start=0;
   end=this.length-1;
   
   while(start<=end && this.charAt(start)==' '){
      start++;
   }
   while(start<=end && this.charAt(end)==" "){
      end--;
   }
   
   return this.substring(start,end+1);

}

Related

1. trim()

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

2. 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();
   ...
   

3. trim()

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

4. trim()

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

5. trim()

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

6. trim()

   Array.isArray = Array.isArray || function (obj) {
     return toString.call(obj) === '[object Array]';
   };
   String.prototype.trim = String.prototype.trim || function () {
     var str = this.replace(/^\s\s*/, ''),
       i = str.length;
     for (let rgxp = /\s/; rgxp.test(str.charAt(--i));) {}
     return str.substring(0, i + 1);
   };
   ...
   

7. trim()

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

8. trim()

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

9. trim()

   String.prototype.trim= function()
       var str= this.replace(/^\s+/, '');
     for (var i = str.length - 1; i > 0; --i)
       if (/\S/.test(str.charAt(i)))
         str = str.substring(0, i + 1);
         break;
     return str;