es6 capitalize first letter code example

Example 1: javascript capitalize words

//capitalize only the first letter of the string. 
function capitalizeFirstLetter(string) {
    return string.charAt(0).toUpperCase() + string.slice(1);
}
//capitalize all words of a string. 
function capitalizeWords(string) {
    return string.replace(/(?:^|\s)\S/g, function(a) { return a.toUpperCase(); });
};

Example 2: return first letter of string javascript in uppercase

function capitalizeFirstLetter(string) {
  return string.charAt(0).toUpperCase() + string.slice(1);
}

console.log(capitalizeFirstLetter('foo')); // Foo

Example 3: js capitalize first letter

// this will only capitalize the first word
var name = prompt("What is your name");
firstLetterUpper = name.slice(0,1).toUpperCase();

alert("Hello " + firstLetterUpper + name.slice(1, name.length).toLowerCase());

Example 4: capitalize first carater js

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