Nodejs String Capitalize capitalizeFirstLetter()

Method Source Code

function myReplace(str, wordToReplace, newWord) {

    console.log(/[A-Z]/.test(wordToReplace[0]));

    if(/[A-Z]/.test(wordToReplace[0])) {
        newWord = newWord.capitalizeFirstLetter();
    }//  w  w  w  .j  ava2 s.  c o m
    if(/[a-z]/.test(wordToReplace[0])) {
        newWord = newWord.minusculeFirstLetter();
    }
    str = str.replace(wordToReplace, newWord);

    return str;
}

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

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

console.log(myReplace("A quick brown fox Jumped over the lazy dog", "Jumped", "leaped"));

Related

1. capitalizeFirstLetter()

   String.prototype.capitalizeFirstLetter = function() {
       return this.charAt(0).toUpperCase() + this.slice(1);
   };
   Array.prototype.randomElement = function () {
       return this[Math.floor(Math.random() * this.length)];
   };
   

2. capitalizeFirstLetter()

   String.prototype.capitalizeFirstLetter = function(){
        return this[0].toUpperCase() + this.slice(1);
   

3. capitalizeFirstLetter()

   String.prototype.capitalizeFirstLetter = function() {
       return this.charAt(0).toUpperCase() + this.slice(1);
   if (!String.prototype.format) {
     String.prototype.format = function() {
       var args = arguments;
       return this.replace(/{(\d+)}/g, function(match, number) { 
         return typeof args[number] != 'undefined'
           ? args[number]
   ...
   

4. capitalizeFirstLetter()

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

5. capitalizeFirstLetter()

   String.prototype.capitalizeFirstLetter = function() {
       return this.charAt(0).toUpperCase() + this.slice(1);
   };
   function titleCase(str) {
       var lowerStr = str.toLowerCase();
       var strArray = lowerStr.split(" ");
       var capitalisedArray = [];
       for (var i = 0, len = strArray.length; i < len; i++) {
           capitalisedArray.push(strArray[i].capitalizeFirstLetter());
   ...
   

6. capitalizeFirstLetter()

   RegExp.escape = function(text) {
     return text.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&');
   };
   String.prototype.capitalizeFirstLetter = function() {
     return this.charAt(0).toUpperCase() + this.slice(1);
   };
   

7. capitalizeFirstLetter()

   "use strict";
   String.prototype.capitalizeFirstLetter = function () {
       return this.charAt(0).toUpperCase() + this.slice(1);
   };
   

8. capitalizeFirstLetter()

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

9. capitalizeFirstLetter()

   String.prototype.capitalizeFirstLetter = function() {
     return this.charAt(0).toUpperCase() + this.slice(1);
   };
   String.prototype.capitalizeString = function() {
     return this.replace(/\w\S*/g, function(txt){return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();});
   };