Nodejs String to Underscore toUnderscore()

Method Source Code

String.prototype.toUnderscore = function(){
  return this.charAt(0).toLowerCase() + this.substring(1).replace(/([A-Z])/g, function($1){return "_"+$1.toLowerCase();});
};
console.log(process.argv[2].toUnderscore());

Related

1. toUnderscore()

   String.prototype.toUnderscore = function(){
     return this.replace(/([A-Z])/g, function($1){return "_"+$1.toLowerCase();});
   };
   

2. toUnderscore()

   function getId(obj){
     return parseInt($(obj).attr('id').split("-").pop(), 10);
   String.prototype.toUnderscore = function(){
     return this.replace(/([A-Z])/g, function($1){return "_"+$1.toLowerCase();});
   };
   

3. toUnderscore()

   String.prototype.toUnderscore = function() {
     return this.replace(/(^[A-Z])/, function(match) {
       return match.toLowerCase();
     }).replace(/([A-Z])/g, function(match){
       return "_" + match.toLowerCase();
     });
   };
   

4. toUnderscore()

   String.prototype.toUnderscore = function() {
     var str = this.replace(/[A-Z]/g, function(s) {
       return "_" + s.toLowerCase();
     });
     while (str.charAt(0) === '_') {
       str = str.slice(1);
     return str;
   };
   ...