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

Question

How do I make the first letter of a string uppercase, but not change the case of any of the other letters?

For example:

• \"this is a test\"

Answer 1

If you're already (or considering) using lodash, the solution is easy:

_.upperFirst('fred');
// => 'Fred'

_.upperFirst('FRED');
// => 'FRED'

_.capitalize('fred') //=> 'Fred'

See their docs: https://lodash.com/docs#capitalize

_.camelCase('Foo Bar'); //=> 'fooBar'

https://lodash.com/docs/4.15.0#camelCase

_.lowerFirst('Fred');
// => 'fred'

_.lowerFirst('FRED');
// => 'fRED'

_.snakeCase('Foo Bar');
// => 'foo_bar'

Vanilla js for first upper case:

function upperCaseFirst(str){
    return str.charAt(0).toUpperCase() + str.substring(1);
}