Regex: prevent splitting subsequent uppercase letters

Question

I am splitting a string into words for any uppercase letter and I am using the following regex:

'ThisIsTheStringToSplit'.match(/[A-Z][a-z]+/g);

Javascript Split string on UpperCase Characters

However if there are two or more upper case letters in a row I only want to split from the first letter.

'THISIsTheStringToSplit' would split into the words THISIs, The, String, To, Split.

How can I use regex to handle this case?

Answer 1

Here you go:

var str = "THISIsTheStringToSplit".match(/[A-Z]+[a-z]*/g);

This will return an array with all the matches as required.

Also, this will handle the case where all alphabets are capital.

Example:

var str = "THISI".match(/[A-Z]+[a-z]*/g);

This will return THISI

Answer 2

Could you please try following, written as per shown samples.

.match(/[A-Z]+[a-z]+/g);

It will simply match one or more occurrences of capital alphabets followed by 1 or more occurrences of small letters.