code: function( input ) {
  
  		if ( input == null ) {
  
  			input = this.result;
  
  		}
  
  		for (var i = 0; i < input.length; i++) {
  
  			if ( isNaN( parseInt( input.charAt( i ) ) ) ) continue;
  
  			else {
  
  			this.temp = this.persian_number[ parseInt( input.charAt( i ) ) ];
  
  			this.result = this.result.replace( input.charAt( i ), this.temp );
  
  			}
  
  		}
  
  		return this;
  
  	}
docs: *******************************************************************
  Convert english number to persian number in persin text
  *********************************************************************
  @since 08 July 2015
  @var input string
  @return object