Nodejs String Camel Case unCamelCase()

Method Source Code

/**/*from   w w w  .j a  va  2 s .com*/
 * Turns someCrazyName into Some Crazy Name
 * Decent job of acroynyms:
 * ABCAcryonym => ABC Acryoynm
 * xmlHTTPRequest => Xml HTTP Request
 */
String.prototype.unCamelCase = function(){
   return this
      // insert a space between lower & upper
      .replace(/([a-z])([A-Z])/g, '$1 $2')
      // space before last upper in a sequence followed by lower
      .replace(/\b([A-Z]+)([A-Z])([a-z])/, '$1 $2$3')
      // uppercase the first character
      .replace(/^./, function(str){ return str.toUpperCase(); })
}

// Or, one liner.
// String.prototype.unCamelCase=function(){return this.replace(/([a-z])([A-Z])/g,'$1 $2').replace(/\b([A-Z]+)([A-Z])([a-z])/,'$1 $2$3').replace(/^./,function(s){return s.toUpperCase();})}

Related

1. toCamelCase()

   String.prototype.toCamelCase = function() {
     return this.replace(/[- ](\w)/g, function(match) {
       return match[1].toUpperCase();
     });
   

2. toCamelCase(delimiter)

   "use strict";
   var toCamelCase = function (string) {
       if (string.substr(0, 2) !== string.substr(0, 2).toUpperCase()) {
           return string.substr(0, 1).toLowerCase() + string.substr(1);
       else {
           return string;
   };
   ...
   

3. toCamelCasej()

   String.prototype.toCamelCase  = jCube.String.toCamelCase  = function () {
     return this.replace( /-\D|-\d/g, function(s){ return s.charAt(1).toUpperCase()}).replace( /\s\D|\s\d/g, function(s){ return s.charAt(1).toUpperCase()});
   

4. toLittleCamelCase()

   String.prototype.toLittleCamelCase = function () {
     var sourceStr = this.toString();
     var str = '';
     var strArr = sourceStr.split('-');
     strArr.forEach(function (el) {
       str = str + el.firstUppserCase();
     })
     str = str.firstLowerCase();
     return str;
   ...
   

5. to_camelCase()

   String.prototype.to_camelCase = String.prototype.to_camelCase || function(){
       var split = this.split('_').filter(Boolean);
       var len = split.length;
       var camelCaseString = '';
       for (var i=0;i<len;i++) {
           if(i===0){
               camelCaseString = camelCaseString + split[i].toLowerCase();
           else{
   ...
   

6. underscore_to_camel()

   String.prototype.underscore_to_camel = function() {
     return this.replace(/_[a-z]/, function(m){ return m.substring(1).toUpperCase(); })
   String.prototype.capitalize = function() {
     return this.replace(/^[a-z]/, function(m){ return m.toUpperCase(); })
   String.prototype.repeat = function(num) {
     return new Array( num + 1 ).join( this );