Nodejs String Case Convert snake_case()

Method Source Code

String.prototype.snake_case = function(){
    return this/*from  w  ww .  j av  a 2 s.  com*/
        .replace( /[A-Z]/g, function($1) { return '_' + $1 } )
        .toLowerCase();
}

Related

1. toAlternatingCase()

   String.prototype.toAlternatingCase = function () {
     var newStr = "";
     for (var i = 0; i < this.length; i++){
       if (this.charAt(i).toUpperCase() === this.charAt(i)){
          newStr += this.charAt(i).toLowerCase();
       } else {
          newStr += this.charAt(i).toUpperCase();  
     return newStr;
   

2. toAlternatingCase()

   String.prototype.toAlternatingCase = function () {
     return this.toString().split('')
                           .map(l => l.match(/[a-z]/)  ? l.toUpperCase() : l.toLowerCase())
                           .join('');
   

3. toAlternatingCase()

   String.prototype.toAlternatingCase = function() {
     var output = '';
     for (var i=0; i<this.length; i++) {
       if (this[i].toLowerCase() === this[i]) {
         output = output + this[i].toUpperCase();
       } else if (this[i].toUpperCase() === this[i]) {
         output = output + this[i].toLowerCase();
       } else {
         output = output + this[i];
   ...
   

4. snakeCase()

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

5. snakeCaseDash()

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

6. toSnakeCase()

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

7. toCap()

   String.prototype.toCap = function () {
     var result = this.toUpperCase().charAt(0) + this.slice(1, this.length);
     return result;
   };
   

8. toCap()

   String.prototype.toCap = function() {
     var string = this.toString();
     if(!string.length) return;
     var lastName = string.split(' ').pop();
     var firstName = string.split(' ')[0];
     lastName = lastName[0].toUpperCase() + lastName.slice(1);
     firstName = firstName[0].toUpperCase() + firstName.slice(1);
     string = firstName + " " + lastName;
     return string;
   ...
   

9. toCap()

   'use strict'
   export default (obj) => String.prototype.toCap.apply(obj)
   String.prototype.toCap = function () {
    return this.toUpperCase().charAt(0) + this.slice(1,(this.length));