JAVASCRIPT

js first letter uppercase

//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(); });
};

capitalize first letter javascript

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

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

javascript check if all capital letter

function isUpper(str) {
    return !/[a-z]/.test(str) && /[A-Z]/.test(str);
}

isUpper("FOO"); //true
isUpper("bar"); //false
isUpper("123"); //false
isUpper("123a"); //false
isUpper("123A"); //true
isUpper("A123"); //true
isUpper(""); //false

javascript capitalize first letter

const lower = 'this is an entirely lowercase string';
const upper = lower.charAt(0).toUpperCase() + lower.substring(1);

return first letter of string javascript in uppercase

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

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

capitalize first carater js

const capitalize = (s) => {
  if (typeof s !== 'string') return ''
  return s.charAt(0).toUpperCase() + s.slice(1)
}

capitalize('flavio') //'Flavio'
capitalize('f')      //'F'
capitalize(0)        //''
capitalize({})       //''

js first letter to uppercase

function capitalizeFirstLetter(name) {
    return name.replace(/^./, name[0].toUpperCase())
}

how to capitalize first letter javascript

const names = ["alice", "bob", "charlie", "danielle"]
// -->        ["Alice", "Bob", "Charlie", "Danielle"]

//Just use some anonymous function and iterate through each of the elements in the array
//and take string as another array
let namescap = names.map((x)=>{
    return x[0].toUpperCase()+x.slice(1)
    
})
console.log(namescap)

capitalise first letter js

const string = "tHIS STRING'S CAPITALISATION WILL BE FIXED."
const string = string.charAt(0).toUpperCase() + string.slice(1)

js first character uppercase

string.charAt(0).toUpperCase() + string.slice(1);

javaSript string first words to upper case

function titleCase(str) {
  return str.toLowerCase().replace(/(^|s)S/g, L => L.toUpperCase());
}

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());

capitalize first letter of string javascript

let val = '  this is test ';
val = val.trim();
val = val.charAt(0).toUpperCase() + val.slice(1);
console.log("Value => ", val);

how to capitalize first letter in javascript

function capitalize(word) {
    return word.charAt(0).toUpperCase() + word.toLocaleLowerCase().substring(1)
}
capitalize("bob");

how to change the first Letter to uppercase js

let name = 'john';
name = name.charAt(0).toUpperCase() + name.slice(1); //slice(index) return string from index to index

console.log(name); // John

Javascript Capitalize First Letter

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

console.log(capitalizeFirstLetter('foo')); // Foo
 Run code snippet

js capitalize first letter of each word

const titleCase = title => title
    .split(/ /g).map(word =>
        `${word.substring(0,1).toUpperCase()}${word.substring(1)}`)
    .join(" ");

Capitalize the first letter of string using JavaScript

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

make the first letter of a string upper case

>>> "hello world".title()
'Hello World'
>>> u"hello world".title()
u'Hello World'

first letter uppercase js

const lower = 'this is an entirely lowercase string';
const upper = lower.charAt(0).toUpperCase() + lower.substring(1);

how to check if the first letter of a string is capitalized or uppercase in js

/**** Check if First Letter Is Upper Case in JavaScript***/
function startsWithCapital(word){
    return word.charAt(0) === word.charAt(0).toUpperCase()
}

console.log(startsWithCapital("Hello")) // true
console.log(startsWithCapital("hello")) // false

js caps first letter

// Oneliner, get first character, replace it with first character in upper case
string.replace(string[0], string[0].toUpperCase())

capitalize first carater js

p.capitalize {
  text-transform: capitalize;
}

How to capitalize the first letter of a word in JavaScript

const word = "freecodecamp"

const capitalized =
  word.charAt(0).toUpperCase()
  + word.slice(1)
  
// Freecodecamp
// F is capitalized

uppercase first letter javascript

const names = ["alice", "bob", "charlie", "danielle"];

const namesCap = names.map((name) => {
  return `${name[0].toUpperCase()}${name.slice(1)}`;
});

console.log(namesCap);

capitalize first carater js

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

javascript capitalize first letter

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

how to make first letter uppercase in javascript

var name = prompt("What is your name");
firstLetterUpper = name.slice(0,1).toUpperCase();

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

How do I make the first letter of a string uppercase in JavaScript?

//1 using OOP Approach 
Object.defineProperty(String.prototype, 'capitalize', {
  value: function() {
      return this.charAt(0).toUpperCase()+ this.slice(1).toLowerCase();
  },
  enumerable: false
});

function titleCase(str) {
  return str.match(/wS*/gi).map(name => name.capitalize()).join(' ');
}
//-------------------------------------------------------------------
//2 using a simple Function 
function titleCase(str) {
  return str.match(/wS*/gi).map(name => capitalize(name)).join(' ');
}
function capitalize(string) {
  return string.charAt(0).toUpperCase() + string.slice(1).toLowerCase();
}

uppercase first letter js

function ucwords (str) {
  return (str + '').replace(/^([a-z])|s+([a-z])/g, function ($1) {
    return $1.toUpperCase();
  });
}

console.log(ucwords("hello world"));

first letter string uppercase javascript

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

javascript first letter uppercase

const upperCase = function(names){
    const toLower = names.toLowerCase().split(' ');
    const namesUpper = [];
    for(const wordName of toLower){
        namesUpper.push(wordName[0].toUpperCase() + wordName.slice(1));
    }
    return namesUpper.join(' ');
}

JavaScript Capitalize First Letter

 const capitalize = ([first, ...rest]) => first.toUpperCase() + rest.join("").toLowerCase(); 

first letter of string in uppercase using javascript

function capFirst(str) {
     return str[0].toUpperCase() + str.slice(1);
 }

console.log(capFirst('hello'));
//output 
//Hello

how to check if a letter is capital in javascript

// program to convert first letter of a string to uppercase
function capitalizeFirstLetter(str) {

    // converting first letter to uppercase
    const capitalized = str.charAt(0).toUpperCase() + str.slice(1);

    return capitalized;
}

// take input
const string = prompt('Enter a string: ');

const result = capitalizeFirstLetter(string);

console.log(result);

Checking if the first letter of the string is uppercase

   if (this.state.name[0] >= 'A' && this.state.name[0] <= 'Z')
      this.setState({ name: "First letter is uppercase" })
    else
      this.setState({ name: "First letter is NOT uppercase" })
  }