Nodejs String to Upper Case toUpperCaseFirstLetter()

Method Source Code

window.upperCaseFirstLetter = (str)=>{
   return str.replace(/^\w/, function(w){return w.toUpperCase()});
}
String.prototype.toUpperCaseFirstLetter = function(){
   return upperCaseFirstLetter(this);
}

Related

1. toUpper()

   String.prototype.toUpper = function() {
     return this.replace(/[a-z]/g, function(x) {
       return String.fromCharCode(x.charCodeAt(0) - 32);
     });
   

2. toUpperCase()

   String.prototype.toUpperCase = function() {
     var s = "";
     for (var i = 0, len = this.length; i < len; i++) {
       var char = this.charCodeAt(i);
       if (char >= 97 && char <= 122) {
         s += String.fromCharCode(char - 32);
       } else {
         s += this[i];
     return s;
   };
   

3. toUpperCaseFirst()

   String.prototype.toUpperCaseFirst = function() {
       return this.charAt(0).toUpperCase() + this.slice(1);
   };
   

4. toUpperCaseFirst()

   String.prototype.toUpperCaseFirst = function() {
       return this[0].toUpperCase() + this.substr(1);
   };
   

5. toUpperCaseFirst()

   String.prototype.toUpperCaseFirst = function() {
     return this.slice(0,1).toUpperCase() + this.slice(1).toLowerCase();
   };
   

6. toUpperLowerCase()

   String.prototype.toUpperLowerCase = function() {
       var string = this.split("");
       string[0] = string[0].toUpperCase();
       return string.join("");
   };
   

7. toUpperLowerCase()

   String.prototype.toUpperLowerCase = function() {
       var string = this.split("");
       string[0] = string[0].toUpperCase();
       return string.join("");
   };
   String.prototype.firstUpper = function() {
       return this.charAt(0).toUpperCase() + this.slice(1);
   };
   

8. ucWords()

   String.prototype.ucWords = function () {
       return this.split(' ').map(function (w) {
           return w.substr(0, 1).toUpperCase() + w.substr(1); 
       }).join(' ');
   

9. uc_words()

   String.prototype.uc_words = function(){
       return this.replace( /(^|\s)([a-z])/g , function(m,p1,p2){return p1+p2.toUpperCase();});
   };