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Version: 3.13.0

String.prototype.at()

The at() method takes an integer value and returns a ('String consisting of the single UTF-16 code unit located at the specified offset. This method allows for positive and negative integers. Negative integers count back from the last string character.

Syntax​

at(index)

Parameters​

  • index
    • : The index (position) of the string character to be returned. Supports relative indexing from the end of the string when passed a negative index; i.e. if a negative number is used, the character returned will be found by counting back from the end of the string.

Return value​

('String consisting of the single UTF-16 code unit located at the specified position. Returns undefined if the given index can not be found.