How to change string case of object attribute in JavaScript

Question

Let's say that I have an object called "animal" and it has an attribute called "type".

By default animal.type returns string values such as "dog" or "CAT". I would like to turn those strings into something like "Dog" or "Cat" with only the first letter being uppercase. There are only alphabetic characters in the string so there will not be spaces, numbers or special characters.

What are some efficient ways to do that in JavaScript?

Possible duplicate of How do I make the first letter of a string uppercase in JavaScript? — wyattis
– wyattis, Commented Oct 3, 2016 at 21:31

Community · Accepted Answer · 2017-05-23 12:06:56Z

1

Suggested duplicate is a step in the right direction, but not quite what you wanted. Try this:

function capitalize(s) {
  return s.charAt(0).toUpperCase() + s.slice(1).toLowerCase();
}

console.log(['dog', 'CAT'].map(capitalize));

edited May 23, 2017 at 12:06

CommunityBot

11 silver badge

answered Oct 3, 2016 at 21:34

Amit

46.5k9 gold badges84 silver badges114 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

score 0 · Accepted Answer · 2016-10-03 21:41:18Z

0

You could format the string like so:

str = str[0].toUpperCase() + str.toLowerCase().substr(1);

edited Oct 3, 2016 at 21:41

answered Oct 3, 2016 at 21:33

user6765872

1 Comment

Hamms Over a year ago

str = str.toLowerCase(); str[0] = str[0].toUpperCase() is just as effective and vastly easier

Collectives™ on Stack Overflow

How to change string case of object attribute in JavaScript

2 Answers 2

Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related