Here you can find the source of capitalize()
String.prototype.capitalize = function() { return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase(); };
String.prototype.capitalize = function () { 'use strict'; return this.charAt(0).toUpperCase() + this.slice(1); };
String.prototype.capitalize = function () { return this.charAt(0).toUpperCase() + this.slice(1);
String.prototype.capitalize = function () { return this.charAt(0).toUpperCase() + this.slice(1);
String.prototype.capitalize = function () { return this ? this.charAt(0).toUpperCase() + this.slice(1) : ''; };
String.prototype.capitalize = function() { var str = this return str.charAt(0).toUpperCase() + str.slice(1);
String.prototype.capitalize = function() { return this.charAt(0).toUpperCase() + this.slice(1); export default {};
'use strict'; String.prototype.capitalize = function() { return this.charAt(0).toUpperCase() + this.slice(1).toLowerCase(); };
String.prototype.capitalize = function() { str = this str = str.replace(/^[a-z]/, this[0].toUpperCase()) return (str)
String.prototype.capitalize = function(){ var first_char = this.charAt(0).toUpperCase(); return this.replace(/^./,first_char); };