w3resource

JavaScript: Make capitalize the first letter of a string

JavaScript String: Exercise-8 with Solution

Write a JavaScript function to capitalize the first letter of a string.

Test Data :
console.log(capitalize('js string exercises'));
"Js string exercises"

Pictorial Presentation:

JavaScript: Make capitalize the first letter of a string

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Make capitalize the first letter of a string</title>
</head>
<body>
</body>
</html>

JavaScript Code:

capitalize = function(str1){
  return str1.charAt(0).toUpperCase() + str1.slice(1);
}
    
 console.log(capitalize('js string exercises'));

Sample Output:

Js string exercises

Flowchart:

Flowchart: JavaScript- Make capitalize the first letter of a string

Live Demo:

See the Pen JavaScript Make capitalize the first letter of a string - string-ex-8 by w3resource (@w3resource) on CodePen.


Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript function to parameterize a string.
Next: Write a JavaScript function to capitalize the first letter of each word in a string.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Share this Tutorial / Exercise on : Facebook and Twitter

JavaScript: Tips of the Day

Tagged template literals

function getPersonInfo(one, two, three) {
  console.log(one);
  console.log(two);
  console.log(three);
}

const person = 'Lydia';
const age = 21;

getPersonInfo`${person} is ${age} years old`;

If you use tagged template literals, the value of the first argument is always an array of the string values. The remaining arguments get the values of the passed expressions!

Ref: https://bit.ly/323Y0P6