JAVASCRIPT

make the first letter of a string upper case

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

how to change the first 3 letters from a string toupper case

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

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