Cast Number to String. The last digit is separated by a stripe

num2camelString.js

var num2camelString = function( numero ) {
    var string = numero + "";                               //   4   23  132 30
    
    if( string.length === 1 ) {                             //   t    f    f  f
        string = "0" + string;                              //  04   23  132 30
    }
    string = string.substring( 0, string.length - 1 )       //   0    2   13  3
                 + "-"                                      //   -    -    -  -
                 + string.substr( string.length - 1, 1 );   //   4    3    2  0
    if( string.lastIndexOf( "0" ) === string.length -1 ) {
        string = string.substring( 0, string.length -2 );   // 0-4  2-3 13-2  3
    }
    return string
};