String Trim and Case Methods

These methods remove whitespace or change letter case.

Removes whitespace from both ends of the string.

Example:

'  abc  '.trim();     // 'abc'

Removes whitespace from the start of the string.

Example:

'  abc  '.trimleft(); // 'abc  '

Removes whitespace from the end of the string.

Example:

'  abc  '.trimright(); // '  abc'

Converts letters to uppercase.

Example:

'abc'.upper();        // 'ABC'

Converts letters to lowercase.

Example:

'ABC'.lower();        // 'abc'

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